CN111709124B - Product FMECA analysis method, device, computer equipment and storage medium - Google Patents
Product FMECA analysis method, device, computer equipment and storage medium Download PDFInfo
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Abstract
The application relates to a method, a device, a computer device and a storage medium for analyzing a product FMECA. The method comprises the following steps: dividing the product into a plurality of contract levels, and establishing a mapping relation among the contract levels, wherein the contract levels comprise a lowest contract level, an intermediate contract level and a highest contract level; performing fault analysis on products in the lowest appointed level to acquire first fault information; carrying out fault analysis on products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to acquire second fault information; carrying out fault analysis on products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels to acquire third fault information; and carrying out hazard analysis on the products in the highest appointed level according to the third fault information, and sequentially transmitting the hazard analysis result back to the second fault information and the first fault information. The FMECA analysis efficiency and the updating efficiency are effectively improved, and the error rate is reduced.
Description
Technical Field
The present application relates to the field of reliability analysis technologies, and in particular, to a method, an apparatus, a computer device, and a storage medium for FMECA analysis of a product.
Background
Failure mode, impact and hazard analysis (FMECA) is a generalized analysis method that analyzes all possible failure modes of a product and the possible impact of each failure mode on the product, and classifies the severity of the impact of each failure mode and its probability of occurrence.
The implementation of the FMECA is generally carried out by manually filling in an FMECA form and the like, and according to different requirements of deep and fine degree of the FMECA, the number of the appointed hierarchy of the product is also different, and the FMECA needs to be continuously updated along with the change of the design state of the product, so that the manual analysis and updating speed is slower, a great amount of workload is required for staff, the efficiency is lower, and the error rate is higher.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a product FMECA analysis method, apparatus, computer device, and storage medium capable of improving efficiency and reducing error rate.
A method of product FMECA analysis, the method comprising:
dividing a product into a plurality of contract levels, and establishing a mapping relation among the contract levels, wherein the contract levels comprise a lowest contract level, a middle contract level and a highest contract level;
Performing fault analysis on the products in the lowest appointed level to acquire first fault information;
performing fault analysis on products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to acquire second fault information;
carrying out fault analysis on products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels to acquire third fault information;
and carrying out hazard analysis on the products in the highest appointed level according to the third fault information, and sequentially returning hazard analysis results to the second fault information and the first fault information.
In one embodiment, the first fault information includes fault modes of products in the lowest appointed level, influences of the fault modes on a higher level, frequency ratio, probability of influence of the fault modes, fault rate, task time and fault mode hazard;
the step of performing fault analysis on the products in the lowest appointed level and obtaining first fault information comprises the following steps:
acquiring fault modes of products in the lowest appointed level, the influence of each fault mode on a higher level, the frequency ratio, the fault mode influence probability, the fault rate and the task time;
And determining the hazard degree of the fault mode according to the frequency ratio, the fault mode influence probability, the fault rate and the task time.
In one embodiment, after the steps of obtaining the failure mode of each product in the lowest contracted hierarchy, the effect of each failure mode on a higher hierarchy, the frequency ratio, the failure mode effect probability, the failure rate and the task time, the method further includes:
judging whether the sum of the frequency ratios of the same product in the lowest appointed level is 1 or not;
if not, outputting prompt information; and/or
Judging whether the product information in the first fault information corresponds to the product information in the mapping relation between the appointed layers;
if not, outputting prompt information.
In one embodiment, the second fault information includes a fault mode, a fault reason, an effect on a higher level, a fault detection mode, a frequency ratio, a fault mode effect probability, a fault rate, a task time and a fault mode hazard degree of each product in the intermediately agreed level;
the step of performing fault analysis on the products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to obtain second fault information comprises the following steps:
Determining the fault mode of each product in the middle contract level according to the influence of the fault mode of each product in the lowest contract level in the first fault information on a higher hierarchy and the mapping relation between the lowest contract level and the middle contract level;
determining a fault reason corresponding to each fault mode of each product in the middle contract level according to the fault mode of each product in the lowest contract level in the first fault information and the mapping relation between the lowest contract level and each middle contract level;
determining the influence of the fault mode of each product in the intermediate contract level on a higher level;
determining a fault detection mode corresponding to a fault mode of each product in the intermediate contract level;
determining the failure rate corresponding to each failure mode of each product in the intermediate contract level according to the failure rate corresponding to each failure mode of each product in the lowest contract level in the first failure information and the mapping relation between the lowest contract level and the intermediate contract level, and determining the failure rate of each product according to the failure rate corresponding to each failure mode of the same product;
And determining the frequency ratio corresponding to each failure mode according to the failure rate corresponding to each failure mode of each product in the intermediate appointed hierarchy and the failure rate of each product.
In one embodiment, the third fault information includes a fault mode, a fault cause, a fault detection mode, a frequency ratio, a fault mode influence probability, a fault rate, a task time and a fault mode hazard degree of each product in the highest appointed level;
the step of performing fault analysis on the product in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels, and obtaining third fault information comprises the following steps:
determining the fault mode of each product in the highest appointed level according to the influence of the fault mode of each product in the middle appointed level in the second fault information on a higher hierarchy and the mapping relation between the middle appointed level and the highest appointed level;
determining a fault reason corresponding to each fault mode of each product in the highest appointed level according to the fault mode of each product in the middle appointed level in the second fault information and the mapping relation between the middle appointed level and each highest appointed level;
And determining the fault detection mode corresponding to the fault mode of each product in the highest appointed level according to the fault detection mode corresponding to the fault mode of each product in the intermediate appointed level and the mapping relation between the intermediate appointed level and each highest appointed level.
In one embodiment, the step of performing a hazard analysis on the products in the highest appointed level according to the third fault information and sequentially returning the hazard analysis result to the second fault information and the first fault information includes:
determining the final influence, the severity level and the product hazard level of the fault according to the fault mode of each product in the highest appointed level in the third fault information;
and sequentially transmitting the final influence and the severity level back to the second fault information and the first fault information in combination with the mapping relation between the contract levels, determining the product hazard level of each product in the middle contract level according to the second fault information and the severity level transmitted back, and determining the product hazard level of each product in the lowest contract level according to the first fault information and the severity level transmitted back.
In one embodiment, the step of performing a hazard analysis on the products in the highest appointed level according to the third fault information and sequentially returning the hazard analysis result to the second fault information and the first fault information further includes:
and returning a fault detection mode corresponding to the fault mode of each product in the highest appointed level in the third fault information to the first fault information by combining the mapping relation among the appointed levels.
In one embodiment, the step of dividing the product into a plurality of contract levels and establishing a mapping relationship between the contract levels includes:
dividing the product into a plurality of contracted levels;
sequentially numbering the products in each appointed level;
and establishing mapping relation tables among the products in each appointed level and the numbers thereof and among the products in each appointed level.
In one embodiment, the first fault information, the second fault information and the third fault information each include a number corresponding to each product in the agreed hierarchy and a number of a fault mode of each product.
In one embodiment, the first fault information, the second fault information, and the third fault information are stored in a table in a preset format;
Before the step of performing fault analysis on the products in the intermediate contract levels according to the first fault information and combining the mapping relation between the contract levels to obtain second fault information, the method further includes: acquiring a storage position of the first fault information in a table in the preset format;
before the step of performing fault analysis on the products in the highest contract level according to the second fault information and combining the mapping relation among the contract levels to obtain third fault information, the method further includes: and acquiring the storage position of the second fault information in the table in the preset format.
A device for FMECA analysis of a product, the device comprising:
the system comprises an establishing unit, a storage unit and a processing unit, wherein the establishing unit is used for dividing a product into a plurality of contract levels and establishing a mapping relation among the contract levels, and the contract levels comprise a lowest contract level, a middle contract level and a highest contract level;
the first acquisition unit is used for carrying out fault analysis on the products in the lowest appointed level and acquiring first fault information;
the second obtaining unit is used for carrying out fault analysis on the products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to obtain second fault information;
The third obtaining unit is used for carrying out fault analysis on the products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels to obtain third fault information;
and the return unit is used for carrying out hazard analysis on the products in the highest appointed level according to the third fault information and sequentially returning hazard analysis results to the second fault information and the first fault information.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the method described above when the processor executes the computer program.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method described above.
According to the FMECA analysis method for the products, firstly, the products are divided into the lowest appointed level, the middle appointed level and the highest appointed level, and mapping relations among the appointed levels are established; then carrying out fault analysis on products in the lowest appointed level to obtain first fault information; carrying out fault analysis on products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to obtain second fault information; carrying out fault analysis on products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels to obtain third fault information; and finally, carrying out hazard degree analysis on the products in the highest appointed level according to the third fault information, and sequentially transmitting the hazard degree analysis result back to the second fault information and the first fault information. Therefore, the fault information of a higher contract level can be automatically determined according to the fault information of a lower contract level until the fault information of a highest contract level is obtained, the product of the highest contract level can be subjected to hazard analysis according to the third fault information, and the hazard analysis result is automatically transmitted back to the fault information corresponding to each level below the highest contract level, so that the FMECA analysis efficiency and the updating efficiency are effectively improved while the completion of the FMECA analysis result is ensured, manual errors are avoided, and the error rate is reduced.
Drawings
FIG. 1 is a schematic flow chart of a method of FMECA analysis of a product in one embodiment;
FIG. 2 is a schematic flow chart of step S40 of the FMECA analysis method for products in one embodiment;
FIG. 3 is a schematic flow chart of step S40 in a method for analyzing FMECA of a product according to another embodiment;
FIG. 4 is a schematic flow chart of step S60 of the FMECA analysis method for products in one embodiment;
FIG. 5 is a schematic flow chart of step S100 in a method for analyzing FMECA of a product in one embodiment;
FIG. 6 is a schematic flow chart of step S20 of the FMECA analysis method for products in one embodiment;
FIG. 7 is a table of mappings between contract levels in a particular example;
FIG. 8 is a table format storing first fault information corresponding to a component level contract level in one specific example;
FIG. 9 is a table format storing second fault information corresponding to a function unit level contract level in one specific example;
FIG. 10 is a table format storing third fault information corresponding to a subsystem level contract level in one specific example;
FIG. 11 is a schematic diagram of the structure of an FMECA analysis device for products in one embodiment;
FIG. 12 is a schematic diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In one embodiment, as shown in FIG. 1, a product FMECA analysis method is provided for use in FMECA analysis and update processes.
The method for analyzing the FMECA of the product provided by the embodiment of the application comprises the following steps:
and step S20, dividing the product into a plurality of contract levels, and establishing a mapping relation among the contract levels, wherein the contract levels comprise a lowest contract level, an intermediate contract level and a highest contract level.
Specifically, FMECA is a shorthand for failure mode, effects and criticality analysis, also known as failure mode, impact, and hazard analysis; the contract level may also be called a contract level, and refers to a functional level or a structural level where the product of the FMECA is performed according to the functional relationship or the combination characteristic of the product according to the requirement of the FMECA. The lowest contracted level is the level where the product at the lowest layer in the contracted levels is located, the highest contracted level is the highest level in the contracted levels where the FMECA is required to be carried out on the total and complete product, the highest contracted level is the object finally affected by the FMECA, the middle contracted level is the contracted level between the lowest contracted level and the highest contracted level, one or more middle contracted levels can be provided, and the middle contracted level can be divided according to the actual functional level or the structure level of the product.
Because the products among the contract levels have relevance, after the contract levels are determined, the mapping relation among the contract levels can be established, and then the relevance among the products of the contract levels is clarified. For example, the lowest contracted level is a component level, that is, the product of the lowest contracted level is a plurality of components; the middle appointed level is a functional unit level, namely products in the middle appointed level are a plurality of functional units, and each functional unit is composed of components in the lowest appointed level; the highest contract level is the system level, i.e. the products in the highest contract level are a plurality of subsystems, and each subsystem is composed of functional units in the middle contract level. Based on the appointed hierarchy, the subsystem can be associated with the functional units and the components, and the mapping relation between the subsystem and the functional units and the mapping relation between the subsystem and the components are established. The mapping relation can be embodied in the form of a table, a graph, a tree or the like.
Before the contract level is divided, relevant information such as product design information, historical data, usage data, similar product information, various data materials, various reference information, product structure division, fault rate data and the like is required to be collected.
And S40, performing fault analysis on the products in the lowest appointed level to acquire first fault information.
Taking the lowest appointed level as a component level, namely taking a product in the lowest appointed level as a component as an example, respectively carrying out fault analysis on a plurality of components in the lowest appointed level, and obtaining first fault information. The first fault information at least comprises a plurality of fault modes contained in each component, influences of each fault mode on a higher contract level (an intermediate contract level), parameter values related to fault mode hazard degree and the like, wherein each parameter value related to the fault mode hazard degree can enable contents stored in a calling database to be determined, partial parameter values related to the fault mode hazard degree can be further calculated and determined, influences of each fault mode on the higher contract level can be combined with the fault mode, and correlation analysis between the faulty component and a corresponding product (a functional unit) of the higher contract level can be determined.
In addition, the first fault information may be embodied in the form of a table or a graph or a tree. Taking the table as an example, after the first fault information is acquired, the first fault information may be automatically filled into a preset position of the table, for example, 2 rows and 3 columns, 4 rows and 4 columns, and the like.
And step S60, carrying out fault analysis on products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to acquire second fault information.
Specifically, the mapping relationship between the first fault information and each pre-formed contract level is obtained first, and in this step, only the mapping relationship between the lowest contract level and the middle contract level may be obtained. And determining second fault information according to the first fault information and the mapping relation between the lowest contract level and the middle contract level, wherein the second fault information mainly characterizes the specific influence of the faults of the products in the lowest contract level on the products in the middle contract level and the influence of the faults of the products in the middle contract level on the products in the higher contract level (the highest contract level). In general, the second fault information may include fault modes, fault causes, fault detection modes, influences on a higher level, parameter values related to fault mode hazard levels, and the like of each product in the intermediately agreed level. The fault mode, the fault reason and the parameter values related to the hazard degree of the fault mode of each product in the intermediate appointed level can be determined according to the first fault information, the influence on the higher one level can be combined with the fault mode, and the correlation analysis between the functional unit with the fault and the corresponding product (subsystem) of the higher one appointed level can be determined.
Likewise, the second fault information may be embodied in the form of a table or graph or tree. Taking the table as an example, after the second fault information is acquired, the second fault information may be automatically filled into a preset position of the table, for example, 2 rows and 3 columns, 4 rows and 4 columns, and the like.
In addition, before the first fault information is acquired, the preset position of the first fault information in the table can be acquired first, and then the related information is called from the preset position to determine the second fault information, so that manual reference is not needed, and the degree of automation is high.
It should be understood that when there are a plurality of intermediate contract levels, fault analysis is performed on products in each intermediate contract level sequentially in order from low to high, and corresponding fault information is obtained, and only one intermediate contract level is described herein as an example.
And S80, carrying out fault analysis on products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels to acquire third fault information.
Specifically, first, the mapping relationship between the second fault information and each pre-formed contract level is acquired, and in this step, only the mapping relationship between the middle contract level and the highest contract level may be acquired. And determining third fault information according to the second fault information and the mapping relation between the middle contract level and the highest contract level, wherein the third fault information is mainly used for representing the specific influence of the faults of the products (functional units) in the middle contract level on the products (subsystems) in the highest contract level. In general, the third fault information may include fault modes, fault reasons, fault detection modes, and parameter values related to the hazard degree of the fault modes of the products in the highest appointed level. The fault mode, the fault reason, the fault detection mode and the parameter values related to the fault mode hazard degree of each product in the highest appointed level can be determined according to the second fault information.
Likewise, the third fault information may be embodied in the form of a table or graph or tree. Taking the table as an example, after the third fault information is acquired, the third fault information may be automatically filled into a preset position of the table, for example, 2 rows and 3 columns, 4 rows and 4 columns, and the like.
In addition, before the third fault information is acquired, the preset position of the second fault information in the table can be acquired first, and then the related information is called from the preset position to determine the third fault information, so that manual reference is not needed, and the degree of automation is high.
And step S100, carrying out hazard analysis on the products in the highest appointed level according to the third fault information, and sequentially transmitting the hazard analysis result back to the second fault information and the first fault information.
When the third fault information is determined, namely the fault information of the products in all the appointed layers is determined, the products in the highest appointed layer can be subjected to hazard analysis according to the third fault information to obtain hazard analysis results, and the hazard analysis results are sequentially returned to the second fault information corresponding to the middle appointed layer and the first fault information corresponding to the lowest appointed layer, so that the analysis of the whole FMECA is completed.
The hazard analysis may include analysis of a final impact caused by a failure mode of a product in a highest contract level, analysis of a severity level of the failure mode, analysis of a hazard of the product, and other hazard analysis types, which are not listed herein.
The hazard analysis results may be embodied in the form of tables or graphs or trees. Taking a table as an example, after the hazard analysis result is obtained, the hazard analysis result can be automatically filled into the preset positions of the table corresponding to the third fault information, the second fault information and the first fault information, for example, 2 rows and 3 columns or 4 rows and 4 columns.
According to the FMECA analysis method for the products, firstly, the products are divided into the lowest appointed level, the middle appointed level and the highest appointed level, and mapping relations among the appointed levels are established; then carrying out fault analysis on products in the lowest appointed level to obtain first fault information; carrying out fault analysis on products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to obtain second fault information; carrying out fault analysis on products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels to obtain third fault information; and finally, carrying out hazard degree analysis on the products in the highest appointed level according to the third fault information, and sequentially transmitting the hazard degree analysis result back to the second fault information and the first fault information. Therefore, the fault information of a higher contract level can be automatically determined according to the fault information of a lower contract level until the fault information of a highest contract level is obtained, the product of the highest contract level can be subjected to hazard analysis according to the third fault information, and the hazard analysis result is automatically transmitted back to the fault information corresponding to each level below the highest contract level, so that the FMECA analysis efficiency and the updating efficiency are effectively improved while the completion of the FMECA analysis result is ensured, manual errors are avoided, and the error rate is reduced.
In one embodiment, the first fault information includes a fault mode of each product in the lowest agreed level, an influence of each fault mode on a higher level, a frequency ratio, a fault mode influence probability, a fault rate, a task time, and a fault mode hazard level;
as shown in fig. 2, step S40, that is, performing fault analysis on the product in the lowest contract level, includes:
step S401, obtaining fault modes of products in the lowest appointed level, influences of the fault modes on a higher level, frequency ratio, fault mode influence probability, fault rate and task time.
Taking the products in the lowest appointed level as components as an example, the fault mode can comprise no output, frequency out-of-tolerance, voltage out-of-tolerance and the like. The influence of different fault modes of the same product on the higher level can be the same or different, and the influence of each fault mode on the higher level is determined according to the influence generated in practice. The frequency ratio corresponding to each fault mode can be determined by calling stored contents in a database, the fault mode influence probability can be set to be a default value of 1, and the task time can be set to be a default value of 1h or other values. The failure rate is determined based on the specific product characteristics and the corresponding failure mode.
And step S402, determining the hazard degree of the fault mode according to the frequency ratio, the fault mode influence probability, the fault rate and the task time.
After the fault modes of the products in the lowest appointed level, the influence of the fault modes on a higher level, the frequency ratio, the fault mode influence probability, the fault rate and the task time are obtained, the fault mode hazard degree can be determined according to the frequency ratio, the fault mode influence probability, the fault rate and the task time.
In this embodiment, the following calculation formula may be used to calculate and obtain the hazard degree of the failure mode:
C m ＝α*β*t*λ p
wherein C is m The hazard degree of the fault mode is that alpha is the frequency ratio, beta is the influence probability of the fault mode, t is the task time, lambda p Is the failure rate.
In one embodiment, as shown in fig. 3, after step S401, that is, the step of obtaining the failure mode of each product in the lowest contract level, the influence of each failure mode on the higher level, the frequency ratio, the failure mode influence probability, the failure rate and the task time, the product FMECA analysis method provided in the embodiment further includes the following steps:
step S403, judging whether the sum of the frequency ratios of the same product in the lowest appointed level is 1;
step S404, if not, outputting prompt information.
Generally, the sum of the frequency ratios corresponding to all fault modes of the same product should be 1, when the sum of the frequency ratios is judged to be not 1, the obtained data is indicated to be wrong, and prompt information is output at the moment to remind a worker to correct the errors, so that the error can be automatically corrected, and the error rate is reduced. Taking a table as an example, the prompt information may be a significant color filled in a data error position, and may also include prompt characters output in the data error position.
If the sum of the frequency ratios of the same product is 1, the above operation is not required.
Before judging whether the sum of the frequency ratios of the same products in the lowest appointed level is 1, the frequency ratio information of the same products in the lowest appointed level is required to be collected, and then the sum is carried out.
In one embodiment, the method for analyzing FMECA of the product provided in this embodiment further includes the steps of:
step S405, judging whether the product information in the first fault information corresponds to the product information in the mapping relation between each appointed level.
Step S406, if not, outputting prompt information.
Generally, product information such as product names and/or numbers of each appointed level is listed in a mapping relation among the appointed levels, and corresponding to each product information in the lowest appointed level in the first fault information, namely, whether the product information in the first fault information corresponds to the product information in the lowest appointed level in the mapping relation or not is judged, and when the product information does not correspond to the product information in the lowest appointed level in the mapping relation, prompt information is output to remind a worker to correct errors, so that the error rate can be automatically corrected, and the error rate is reduced. The prompting information can be a significant color filled in the data error position, and can also comprise prompting characters and the like output in the data error position.
In one embodiment, the second fault information includes a fault mode, a fault reason, an effect on a higher level, a fault detection mode, a frequency ratio, a fault mode effect probability, a fault rate, a task time and a fault mode hazard level of each product in the intermediately agreed level;
as shown in fig. 4, step S60, namely performing fault analysis on the products in the intermediate contract levels according to the first fault information and combining the mapping relationship between the contract levels, the step of obtaining the second fault information includes:
step S601, determining the failure mode of each product in the middle contract level according to the influence of the failure mode of each product in the lowest contract level in the first failure information on the higher one level and the mapping relation between the lowest contract level and the middle contract level.
Since the products in the lowest contracted level and the middle contracted level have relevance, the failure mode of the product in the lowest contracted level affects the corresponding product in the middle contracted level. Based on the above, the fault mode of the product in the middle appointed level corresponding to the product can be determined directly by the influence of the fault mode of a certain product in the lowest appointed level in the first fault information on the higher one level, so that the fault modes of all the products in the middle appointed level can be determined respectively.
Step S602, determining a fault reason corresponding to each fault mode of each product in the middle contract layer according to the fault mode of each product in the lowest contract layer in the first fault information and the mapping relation between the lowest contract layer and each middle contract layer.
In the lowest agreed level, the different fault modes of a product may have the same effect on the higher level, i.e. the higher level corresponds to multiple fault modes, and then the same fault mode of a product in the middle agreed level corresponding to the product corresponds to multiple fault causes. For example, the effect of the higher level of the component 1 in the lowest hierarchy is the same, and the failure cause corresponding to the failure mode 1 of the functional unit 1 including the component 1 in the middle hierarchy includes the failure cause of the no output and the frequency out-of-tolerance, assuming the failure mode 1. That is, failure modes of products in the low-contract level can be used as the cause of failure of products in the high-contract level.
Step S603, determining the influence of the failure mode of each product in the middle contract level on the higher contract level.
The influence of the fault mode of each product in the middle contract level on the higher one is actually the influence of the fault mode of the same product in the middle contract level on the corresponding product in the higher one, and the influence of the fault mode of each product in the middle contract level on the higher one is determined according to the influence generated in practice.
Step S604, determining a fault detection mode corresponding to the fault mode of each product in the intermediate contract level.
The fault detection modes can be various, such as power-on bit or period bit, and the correct fault detection mode needs to be determined according to the fault mode of each product.
Step S605, determining the failure rate corresponding to each failure mode of each product in the middle appointed level according to the failure rate corresponding to each failure mode of each product in the lowest appointed level in the first failure information and the mapping relation between the lowest appointed level and the middle appointed level, and determining the failure rate of each product according to the failure rate corresponding to each failure mode of the same product.
Assuming that the functional unit 1 in the intermediately agreed level has the functional failure mode 1, the functional unit 1 includes the component 1 and the component 2 in the lowest agreed level, the component 1 has 2 failure modes that are prone to generate the functional failure mode 1, and the component 2 has 1 failure mode that is prone to generate the functional failure mode 1, then the sum of the failure rate of the 2 failure modes of the component 1 and the failure rate of the 1 failure mode of the component 2 can be used as the failure rate of the functional failure mode 1 of the functional unit 1. Similarly, the failure rates of other failure modes of the functional unit 1 are calculated and obtained in the same manner, and the failure rate corresponding to each failure mode of the functional unit 1 is determined. And by analogy, the fault rates corresponding to the fault modes of other functional units in the intermediate contract level can be respectively determined, and finally the fault rates corresponding to the fault modes of products in the intermediate contract level are determined. Further, the sum of the failure rates of the failure modes in the functional unit 1 can be used as the failure rate of the functional unit 1, and the failure rates of other functional units can be determined in the same manner, thereby determining the failure rate of each product in the intermediately agreed hierarchy.
Step S606, determining the frequency ratio corresponding to each failure mode according to the failure rate corresponding to each failure mode of each product in the intermediate appointed hierarchy and the failure rate of each product.
Specifically, after the failure rate of each product and the failure rate corresponding to each failure mode in each product are obtained, the failure rate of each failure mode/the failure rate of each product can be used as the frequency ratio corresponding to the failure mode, so as to determine the frequency ratio of each failure mode.
In addition, the fault mode influence probability may be set to a default value of 1, the task time may be directly obtained from the first fault information, and the fault mode hazard degree may be determined according to a product of the frequency ratio, the fault mode influence probability, the fault rate, and the task time.
In one embodiment, the third fault information includes fault modes, fault reasons, fault detection modes, frequency ratios, fault mode influence probabilities, fault rates, task time and fault mode harmfulness of each product in the highest appointed level;
step S80, namely carrying out fault analysis on products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels, wherein the step of obtaining the third fault information comprises the following steps:
Step S801, determining the failure mode of each product in the highest appointed level according to the influence of the failure mode of each product in the middle appointed level in the second failure information on the higher one level and the mapping relation between the middle appointed level and the highest appointed level.
The process of determining the failure mode of the product in the highest contract level is similar to the process of determining the failure mode of the product in the middle contract level, except that the failure mode of the product in the highest contract level is determined according to the second failure information, and will not be described herein.
Step S802, determining a fault reason corresponding to each fault mode of each product in the highest appointed level according to the fault modes of each product in the middle appointed level in the second fault information and the mapping relation between the middle appointed level and each highest appointed level.
The process of determining the fault cause corresponding to each fault mode of the product in the highest contract level is similar to the process of determining the fault cause corresponding to each fault mode of the product in the middle contract level, and only the difference is that the step is determined according to the second fault information, which is not described herein.
Step 803, determining a fault detection mode corresponding to the fault mode of each product in the highest contract level according to the fault detection modes corresponding to the fault modes of each product in the middle contract level and the mapping relation between the middle contract level and each highest contract level. Namely, according to the corresponding relation between the products in the middle appointed level and the products in the highest appointed level, the fault detection mode corresponding to each product fault mode is obtained from the middle appointed level, and then the fault detection mode corresponding to the fault mode of the corresponding product in the highest appointed level is determined.
The determination of the frequency ratio, the failure mode influence probability, the failure rate, the task time, and the failure mode hazard degree is similar to the related process in the aforementioned step S60, and is not repeated here.
In one embodiment, the method may further include a step of detecting whether the fault detection modes in each contract level are consistent, that is, avoiding an error in the fault detection mode transmission process.
In one embodiment, as shown in fig. 5, step S100, namely, performing hazard analysis on products in the highest appointed level according to the third fault information, and sequentially transmitting the hazard analysis result back to the second fault information and the first fault information, includes:
step S1001, determining the final influence, the severity level and the product hazard level of the fault according to the fault mode of each product in the highest appointed level in the third fault information.
The final influence of the faults can be directly a corresponding fault mode, the severity level can be manually set according to the fault mode, the corresponding relation between the severity level and the fault mode can be input into a database in advance, the product hazard level can be obtained by directly obtaining the database according to the determined fault mode, and the product hazard level can be obtained by summing the hazard levels of the fault modes according to the severity level in the same product.
Step S1002, the final influence and the severity level are sequentially returned to the second fault information and the first fault information in combination with the mapping relation among the contract levels, the product hazard level of each product in the middle contract level is determined according to the second fault information and the severity level returned, and the product hazard level of each product in the lowest contract level is determined according to the first fault information and the severity level returned.
After the final influence and the severity level are determined, the final influence and the severity level can be transmitted back to the second fault information and the first fault information so as to perfect the second fault information and the first fault information, ensure the consistency of the information and improve the updating efficiency. Meanwhile, the product hazard degree of each product in the middle appointed level can be determined by combining the second fault information and the returned severity level, specifically, the product hazard degree of the product can be obtained by summing the hazard degrees of each fault mode of the same product in the middle appointed level according to the severity level, and the product hazard degree of each product in the middle appointed level can be obtained in the same way. The method for calculating the product hazard degree of each product in the first fault information is the same as the above, and is not described herein again.
In one embodiment, the method further comprises the step of detecting whether the final influence and the severity level in each contract level are consistent, namely, avoiding the situation that the final influence and the severity level have errors in the back transmission process.
In one embodiment, step S100, namely, performing hazard analysis on the product in the highest appointed level according to the third fault information, and sequentially returning the hazard analysis result to the second fault information and the first fault information, further includes:
and returning the fault detection mode corresponding to the fault mode of each product in the highest appointed level in the third fault information to the first fault information by combining the mapping relation among the appointed levels.
Because the fault detection mode of each fault mode in the lowest appointed level is not determined in the steps, the fault detection mode can be returned to the first fault information in the returning process, and the first fault information is further perfected.
In one embodiment, as shown in fig. 6, step S20, namely, dividing the product into a plurality of contract levels, and establishing a mapping relationship between the contract levels includes:
step S201, dividing the product into a plurality of appointed layers.
Step S202, sequentially numbering the products in each appointed level.
Step S203, a mapping relation table between the products in each appointed level and the numbers thereof and between the products in each appointed level is established.
By numbering the products, the subsequent calling process is simplified.
FIG. 7 is a table of mapping relationships between contract levels in a specific example, where the plurality of contract levels sequentially includes, from low to high, an element level contract level, a functional unit level contract level, an SRU level contract level, an LRU level contract level, and a subsystem level contract level, the element level contract level is a lowest contract level, the SRU level contract level and the LRU level contract level belong to an intermediate contract level, and the subsystem level contract level is a highest contract level. The LRU is called Line Replaceable Unit, also called external field replaceable unit, and the SRU is internal field replaceable unit.
In one embodiment, the first fault information, the second fault information and the third fault information each include a number corresponding to each product in the appointed hierarchy and a number of a fault mode of each product. Specifically, before the fault information is obtained, the corresponding product name, product number and mapping relation of the products between the contracted levels can be called according to the mapping relation table between the products and the numbers thereof which are predetermined in step S20 and between the products in the contracted levels, so that the fault information can be determined conveniently. And after the fault modes of the products in each appointed level are determined, the fault modes can be automatically numbered, so that information can be recorded conveniently and can be checked later.
In one embodiment, the first fault information, the second fault information and the third fault information are stored in a table in a preset format;
before step S60, i.e. performing fault analysis on the products in the intermediate contract levels according to the first fault information and combining the mapping relationship between the contract levels to obtain the second fault information, the product FMECA analysis method provided in this embodiment further includes: and acquiring the storage position of the first fault information in a table in a preset format.
Before step S80, i.e. performing fault analysis on the product in the highest contract level according to the second fault information and combining the mapping relationship between the contract levels to obtain the third fault information, the product FMECA analysis method provided in this embodiment further includes: and acquiring the storage position of the second fault information in a table in a preset format.
After the first fault information is determined, each data in the first fault information is stored in a table in a preset format, before the second fault information is determined, the storage position of the first fault information in the table is required to be called, corresponding data are acquired, analysis is performed, and after the second fault information is determined by analysis, the second fault information is similarly stored in a table in another preset format. Before determining the third fault information, firstly, the storage position of the second fault information in the table is required to be called, then corresponding data are acquired, then analysis is carried out, and after the third fault information is determined through analysis, the third fault information is stored in the table in another preset format.
The preset format of the table is not limited, and may be set according to actual requirements, so long as each fault information can be clearly stored.
Fig. 8 is a table format storing first fault information corresponding to an element level contract level in a specific example, fig. 9 is a table format storing second fault information corresponding to a functional unit level contract level in a specific example, and fig. 10 is a table format storing third fault information corresponding to a subsystem level contract level in a specific example. Fig. 8-10 are merely exemplary diagrams and the data stored in the tables is not necessarily complete.
It should be understood that, although the steps in the flowcharts in fig. 1-6 are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in fig. 1-6 may include multiple sub-steps or phases that are not necessarily performed at the same time, but may be performed at different times, nor does the order in which the sub-steps or phases are performed necessarily occur sequentially, but may be performed alternately or alternately with at least a portion of the sub-steps or phases of other steps or other steps.
In another embodiment, as shown in fig. 11, there is provided a product FMECA analysis device, comprising: the establishing unit 20, the first acquiring unit 40, the second acquiring unit 60, the third acquiring unit 80 and the returning unit 100, wherein:
the establishing unit 20 is configured to divide a product into a plurality of contract levels, and establish a mapping relationship between the contract levels, where the plurality of contract levels includes a lowest contract level, an intermediate contract level, and a highest contract level;
the first obtaining unit 40 is configured to perform fault analysis on the product in the lowest contract level, and obtain first fault information;
the second obtaining unit 60 is configured to perform fault analysis on the products in the intermediate contract levels according to the first fault information and in combination with the mapping relationship between the contract levels, so as to obtain second fault information;
the third obtaining unit 80 is configured to perform fault analysis on the product in the highest contract level according to the second fault information and in combination with the mapping relationship between the contract levels, so as to obtain third fault information;
and the return unit 100 is configured to perform hazard analysis on the product in the highest appointed level according to the third fault information, and return the hazard analysis result to the second fault information and the first fault information in sequence.
The specific contents of the establishing unit, the first acquiring unit, the second acquiring unit, the third acquiring unit and the backhaul unit may be referred to the corresponding descriptions in the foregoing methods, and will not be repeated herein. The various modules in the FMECA analysis device described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In another embodiment, a computer device is provided, as shown in fig. 12, comprising a memory 200 and a processor 300, the memory 200 and the processor 300 being communicatively coupled to each other via a bus or otherwise, as exemplified by the bus coupling in fig. 12.
The processor 300 may be a central processing unit (Central Processing Unit, CPU). The processor 300 may also be a chip such as other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination thereof.
The memory 200 is used as a non-transitory computer readable storage medium for storing non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions corresponding to the FMECA analysis method of the product in the embodiment of the present invention. The processor 300 performs various functional applications and data processing of the processor 300, namely, the product FMECA analysis method, by running non-transitory software programs, instructions, and modules stored in the memory 200.
Memory 200 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created by the processor 300, etc. In addition, memory 200 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 200 may optionally include memory located remotely from processor 300, which may be connected to the processor via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
It will be appreciated by those skilled in the art that implementing all or part of the above-described embodiment method may be implemented by a computer program to instruct related hardware, where the program may be stored in a computer readable storage medium, and the program may include the above-described embodiment method when executed. Wherein the storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a Flash Memory (Flash Memory), a Hard Disk (HDD), or a Solid State Drive (SSD); the storage medium may also comprise a combination of memories of the kind described above.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (11)
1. A method of FMECA analysis of a product, the method comprising:
dividing a product into a plurality of contract levels, and establishing a mapping relation among the contract levels, wherein the contract levels comprise a lowest contract level, a middle contract level and a highest contract level;
performing fault analysis on the products in the lowest appointed level to acquire first fault information;
performing fault analysis on products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to acquire second fault information; the second fault information comprises fault modes, fault reasons, influences on a higher level, fault detection modes, frequency ratios, fault mode influence probabilities, fault rates, task time and fault mode hazard degrees of all products in the intermediate appointed level;
carrying out fault analysis on products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels to acquire third fault information; the third fault information comprises fault modes, fault reasons, fault detection modes, frequency ratios, fault mode influence probabilities, fault rates, task time and fault mode hazard degrees of all products in the highest appointed level;
Carrying out hazard analysis on the products in the highest appointed level according to the third fault information, and sequentially returning hazard analysis results to the second fault information and the first fault information;
the first fault information comprises fault modes of products in the lowest appointed level, influences of the fault modes on a higher level, frequency ratio, fault mode influence probability, fault rate, task time and fault mode hazard degree;
the step of performing fault analysis on the products in the lowest appointed level and obtaining first fault information comprises the following steps:
acquiring fault modes of products in the lowest appointed level, the influence of each fault mode on a higher level, the frequency ratio, the fault mode influence probability, the fault rate and the task time;
determining the hazard degree of the fault mode according to the frequency ratio, the fault mode influence probability, the fault rate and the task time;
after the steps of obtaining the failure mode of each product in the lowest appointed level, the influence of each failure mode on a higher level, the frequency ratio, the failure mode influence probability, the failure rate and the task time, the method further comprises the following steps:
Judging whether the sum of the frequency ratios of the same product in the lowest appointed level is 1 or not;
if not, outputting prompt information; and/or
Judging whether the product information in the first fault information corresponds to the product information in the mapping relation between the appointed layers;
if not, outputting prompt information;
after the steps of obtaining the failure mode of each product in the lowest appointed level, the influence of each failure mode on a higher level, the frequency ratio, the failure mode influence probability, the failure rate and the task time, the method further comprises the following steps:
and detecting whether the fault detection modes in the contract layers are consistent.
2. The method for analyzing the FMECA of the product according to claim 1, wherein the step of obtaining the second fault information by performing the fault analysis on the product in the intermediate contract level according to the first fault information in combination with the mapping relation between the contract levels includes:
determining the fault mode of each product in the middle contract level according to the influence of the fault mode of each product in the lowest contract level in the first fault information on a higher hierarchy and the mapping relation between the lowest contract level and the middle contract level;
Determining a fault reason corresponding to each fault mode of each product in the middle contract level according to the fault mode of each product in the lowest contract level in the first fault information and the mapping relation between the lowest contract level and each middle contract level;
determining the influence of the fault mode of each product in the intermediate contract level on a higher level;
determining a fault detection mode corresponding to a fault mode of each product in the intermediate contract level;
determining the failure rate corresponding to each failure mode of each product in the intermediate contract level according to the failure rate corresponding to each failure mode of each product in the lowest contract level in the first failure information and the mapping relation between the lowest contract level and the intermediate contract level, and determining the failure rate of each product according to the failure rate corresponding to each failure mode of the same product;
and determining the frequency ratio corresponding to each failure mode according to the failure rate corresponding to each failure mode of each product in the intermediate appointed hierarchy and the failure rate of each product.
3. The method for analyzing the FMECA of the product according to claim 2, wherein the step of obtaining the third fault information includes:
Determining the fault mode of each product in the highest appointed level according to the influence of the fault mode of each product in the middle appointed level in the second fault information on a higher hierarchy and the mapping relation between the middle appointed level and the highest appointed level;
determining a fault reason corresponding to each fault mode of each product in the highest appointed level according to the fault mode of each product in the middle appointed level in the second fault information and the mapping relation between the middle appointed level and each highest appointed level;
and determining the fault detection mode corresponding to the fault mode of each product in the highest appointed level according to the fault detection mode corresponding to the fault mode of each product in the intermediate appointed level and the mapping relation between the intermediate appointed level and each highest appointed level.
4. The method for FMECA analysis of a product according to claim 3, wherein the step of performing a hazard analysis on the product in the highest contract level according to the third fault information and sequentially returning the hazard analysis result to the second fault information and the first fault information comprises:
Determining the final influence, the severity level and the product hazard level of the fault according to the fault mode of each product in the highest appointed level in the third fault information;
and sequentially transmitting the final influence and the severity level back to the second fault information and the first fault information by combining the mapping relation among the contract levels, determining the product hazard level of each product in the middle contract level according to the second fault information and the severity level transmitted back, and determining the product hazard level of each product in the lowest contract level according to the first fault information and the severity level transmitted back.
5. The method of claim 4, wherein the steps of performing a hazard analysis on the products in the highest contract level according to the third fault information and sequentially returning the hazard analysis result to the second fault information and the first fault information further comprise:
and returning a fault detection mode corresponding to the fault mode of each product in the highest appointed level in the third fault information to the first fault information by combining the mapping relation among the appointed levels.
6. The method of claim 1, wherein the steps of dividing the product into a plurality of contract levels and establishing a mapping relationship between the contract levels comprise:
dividing the product into a plurality of contracted levels;
sequentially numbering the products in each appointed level;
and establishing mapping relation tables among the products in each appointed level and the numbers thereof and among the products in each appointed level.
7. The method of claim 6, wherein the first fault information, the second fault information, and the third fault information each include a number corresponding to each product in the contract hierarchy and a number corresponding to a fault mode of each product.
8. The method of claim 1, wherein the first fault information, the second fault information, and the third fault information are stored in a table in a predetermined format;
before the step of performing fault analysis on the products in the intermediate contract levels according to the first fault information and combining the mapping relation between the contract levels to obtain second fault information, the method further includes: acquiring a storage position of the first fault information in a table in the preset format;
Before the step of performing fault analysis on the products in the highest contract level according to the second fault information and combining the mapping relation among the contract levels to obtain third fault information, the method further includes: and acquiring the storage position of the second fault information in the table in the preset format.
9. A device for FMECA analysis of a product, said device comprising:
the system comprises an establishing unit, a storage unit and a processing unit, wherein the establishing unit is used for dividing a product into a plurality of contract levels and establishing a mapping relation among the contract levels, and the contract levels comprise a lowest contract level, a middle contract level and a highest contract level;
the first acquisition unit is used for carrying out fault analysis on the products in the lowest appointed level and acquiring first fault information;
the first obtaining unit is further configured to obtain failure modes of products in the lowest contracted level, an influence of each failure mode on a higher level, a frequency ratio, a failure mode influence probability, a failure rate and task time;
determining the hazard degree of the fault mode according to the frequency ratio, the fault mode influence probability, the fault rate and the task time;
The first obtaining unit is further configured to determine whether a sum of frequency ratios of the same product in the lowest contracted hierarchy is 1;
if not, outputting prompt information; and/or
Judging whether the product information in the first fault information corresponds to the product information in the mapping relation between the appointed layers;
if not, outputting prompt information;
the first acquisition unit is further used for detecting whether fault detection modes in each appointed level are consistent;
the second obtaining unit is used for carrying out fault analysis on the products in the middle contract level according to the first fault information and combining the mapping relation among the contract levels to obtain second fault information; the second fault information comprises fault modes, fault reasons, influences on a higher level, fault detection modes, frequency ratios, fault mode influence probabilities, fault rates, task time and fault mode hazard degrees of all products in the intermediate appointed level;
the third obtaining unit is used for carrying out fault analysis on the products in the highest appointed level according to the second fault information and combining the mapping relation among the appointed levels to obtain third fault information; the third fault information comprises fault modes, fault reasons, fault detection modes, frequency ratios, fault mode influence probabilities, fault rates, task time and fault mode hazard degrees of all products in the highest appointed level;
And the return unit is used for carrying out hazard analysis on the products in the highest appointed level according to the third fault information and sequentially returning hazard analysis results to the second fault information and the first fault information.
10. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 8 when the computer program is executed.
11. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 8.
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| CN114330006A (en) * | 2021-12-31 | 2022-04-12 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Multi-fault diagnosis method and system capable of inhibiting false alarm and computer equipment |
| CN114610645B (en) * | 2022-03-30 | 2022-12-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Task reliability and testability joint determination method and device and computer equipment |
| CN114925466B (en) * | 2022-05-05 | 2024-04-19 | 中国北方车辆研究所 | Four-class five-dimensional FMECA method for comprehensive transmission device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7379846B1 (en) * | 2004-06-29 | 2008-05-27 | Sun Microsystems, Inc. | System and method for automated problem diagnosis |
| CN104820892A (en) * | 2014-12-25 | 2015-08-05 | 北京航空航天大学 | Aviation power generation system quantitative hazardness analysis method based on data transmission |
| CN105844435A (en) * | 2016-06-15 | 2016-08-10 | 南京中车浦镇城轨车辆有限责任公司 | Subway vehicle fault information management system based on FMECA |
| CN106569061A (en) * | 2016-11-01 | 2017-04-19 | 中车株洲电力机车研究所有限公司 | Fault mode, cause and importance analysis method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100042451A1 (en) * | 2008-08-12 | 2010-02-18 | Howell Gary L | Risk management decision facilitator |
-
2020
- 2020-05-26 CN CN202010454257.XA patent/CN111709124B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7379846B1 (en) * | 2004-06-29 | 2008-05-27 | Sun Microsystems, Inc. | System and method for automated problem diagnosis |
| CN104820892A (en) * | 2014-12-25 | 2015-08-05 | 北京航空航天大学 | Aviation power generation system quantitative hazardness analysis method based on data transmission |
| CN105844435A (en) * | 2016-06-15 | 2016-08-10 | 南京中车浦镇城轨车辆有限责任公司 | Subway vehicle fault information management system based on FMECA |
| CN106569061A (en) * | 2016-11-01 | 2017-04-19 | 中车株洲电力机车研究所有限公司 | Fault mode, cause and importance analysis method |
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