CN117590141B - IPM electrical parameter testing system based on data analysis - Google Patents
IPM electrical parameter testing system based on data analysis Download PDFInfo
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Abstract
The invention discloses an IPM electric parameter testing system based on data analysis, which relates to the technical field of IPM electric parameter testing and solves the technical problems that in the prior art, the IPM cannot be analyzed and detected in different operation periods, so that whether the IPM is in a steady state period and whether the electric parameters corresponding to a floating state period are influenced or not cannot be accurately judged; otherwise, if the reciprocating floating quantity of the floating value of the electric parameter exceeds a set threshold value, marking the current period as a floating period; after the steady-state period analysis is completed, the floating state period is subjected to analysis object parameter detection through a floating state parameter detection unit.
Description
Technical Field
The invention relates to the technical field of IPM electrical parameter testing, in particular to an IPM electrical parameter testing system based on data analysis.
Background
IPM is an intelligent power module, which integrates a power switch device and a driving circuit; and fault detection circuits such as overvoltage, overcurrent and overheat are also built in, and detection signals can be sent to the CPU. The high-speed low-power-consumption integrated circuit consists of a high-speed low-power-consumption tube core, an optimized gate electrode driving circuit and a rapid protection circuit; even if a load accident or improper use occurs, the IPM itself can be ensured not to be damaged; IPM generally uses an IGBT as a power switching element, and incorporates an integrated structure of a current sensor and a driving circuit.
However, in the prior art, analysis and detection cannot be performed on different operation periods of the IPM, so that whether the electrical parameters corresponding to the steady state period and the floating state period of the IPM are affected cannot be accurately judged, operation stability is reduced, continuity test cannot be performed on the IPM, and performance test of the electrical parameters cannot be accurately performed.
In view of the above technical drawbacks, a solution is now proposed.
Disclosure of Invention
The present invention is directed to an IPM electrical parameter testing system based on data analysis, in order to solve the above-mentioned problems.
The aim of the invention can be achieved by the following technical scheme:
the IPM electrical parameter testing system based on data analysis comprises a testing platform, wherein the testing platform is in communication connection with a steady-state parameter detection unit, a floating parameter detection unit, a continuity testing unit and a fault influence analysis unit;
the steady-state parameter detection unit is used for analyzing and detecting different running time periods of the IPM, setting the IPM as an analysis object, acquiring real-time bearing electric parameters of the analysis object, comparing the real-time bearing electric parameters of the analysis object with real-time rated electric parameters of the analysis object to acquire electric parameter floating values, and marking the current time period as a steady-state time period if the reciprocating floating amount of the electric parameter floating values does not exceed a set threshold value; otherwise, if the reciprocating floating quantity of the floating value of the electric parameter exceeds a set threshold value, marking the current period as a floating period; after the steady-state period analysis is completed, the steady-state period is subjected to analysis object parameter detection through the floating state parameter detection unit, after the floating state period analysis is completed, and the steady-state period analysis and the floating state period analysis are both normal, the continuity test unit is used for carrying out continuity test on the analysis object, judging whether the electrical parameter performance test of the current analysis object is qualified or not, and carrying out fault influence analysis on the continuity test process of the analysis object through the fault influence analysis unit when the continuity test of the analysis object is abnormal, judging whether the fault influence is controllable in the continuity test process of the current analysis object, and carrying out continuity re-detection if the fault influence of the analysis object is uncontrollable.
As a preferred embodiment of the present invention, the steady-state parameter detection unit operates as follows:
and the reciprocating floating amount of the performance parameter of the corresponding analysis object in the steady-state period when the analysis object does not have the electric parameter floating and the total ratio of the continuous constant time length of the performance parameter of the corresponding analysis object in the steady-state period when the analysis object has the electric parameter floating are obtained, and the reciprocating floating amount of the performance parameter of the corresponding analysis object in the steady-state period when the analysis object does not have the electric parameter floating and the total ratio of the continuous constant time length of the performance parameter of the corresponding analysis object in the steady-state period when the analysis object has the electric parameter floating are respectively compared with the floating amount lifting threshold and the total ratio threshold of the time length.
As a preferred implementation mode of the invention, if the reciprocating floating amount of the performance parameter of the corresponding analysis object exceeds the floating amount threshold value when the analysis object does not float in the steady-state period, or the total duty ratio of the continuous constant duration of the performance parameter of the corresponding analysis object and the steady-state period does not exceed the total duty ratio threshold value when the analysis object has the electric parameter and floats in the steady-state period, judging that the steady-state parameter of the analysis object detects abnormality, generating a steady-state parameter abnormality signal and sending the steady-state parameter abnormality signal to a test platform;
if the reciprocating floating amount of the performance parameter of the corresponding analysis object does not exceed the floating amount threshold value when the analysis object does not float in the steady-state period, and the duration of the continuous constant time period of the performance parameter of the corresponding analysis object and the total duty ratio of the steady-state period exceed the duration total duty ratio threshold value when the analysis object floats in the steady-state period, judging that the steady-state parameter detection of the analysis object is normal, generating a steady-state parameter normal signal and sending the steady-state parameter normal signal to the continuity testing unit.
As a preferred embodiment of the present invention, the floating parameter detecting unit operates as follows:
and the peak value increasing speed of the sustainable time length when the innumerable values of the performance parameter of the analysis object in the floating state period float and the extending speed of the time length when the numerical value of the performance parameter of the analysis object in the floating state period float are recovered to the set range are obtained, and the peak value increasing speed of the sustainable time length when the innumerable values of the performance parameter of the analysis object in the floating state period float and the extending speed of the time length when the numerical value of the performance parameter of the analysis object in the floating state period float are recovered to the set range are compared with the peak value increasing speed threshold and the time length extending speed threshold respectively.
As a preferred implementation mode of the invention, if the peak value increasing speed of the sustainable duration of numerous value floating of the performance parameter of the analysis object in the floating state period exceeds the peak value increasing speed threshold, or the extending speed of the consumed duration after the performance parameter value of the analysis object in the floating state period is restored to the set range exceeds the duration extending speed threshold, the parameter detection abnormality of the analysis object in the floating state period is judged, a floating state parameter detection abnormality signal is generated, and the floating state parameter detection abnormality signal is sent to a test platform;
if the peak increasing speed of the sustainable duration of the numerous values of the performance parameter of the analysis object in the floating state period does not exceed the peak increasing speed threshold, and the extending speed of the consumed duration of the analysis object in the floating state period after the performance parameter value of the analysis object in the floating state period is floated does not exceed the duration extending speed threshold, judging that the parameter detection of the analysis object in the floating state period is normal, generating a floating state parameter detection normal signal and sending the floating state parameter detection normal signal to the continuity test unit.
As a preferred embodiment of the invention, the continuity test unit operates as follows:
respectively setting the normal time of the detection of the floating state parameter in the floating state period and the normal time of the steady state parameter in the steady state period as the normal time of the floating state and the normal time of the steady state, uniformly marking the normal time as the unoccupied time, and marking the time outside the unoccupied time in the operation period as the risk time; continuously analyzing the normal time and the normal time of the floating state in the running period of the current analysis object, obtaining continuous alternating frequency of the unoccupied time and the risk time in the running period and the expansion amplitude of the numerical difference corresponding to the ratio of the unoccupied time to the ratio of the risk time in the running period, and comparing the continuous alternating frequency of the unoccupied time and the risk time in the running period and the expansion amplitude of the numerical difference corresponding to the ratio of the unoccupied time to the ratio of the risk time in the running period with a continuous alternating frequency threshold and a numerical difference expansion amplitude threshold respectively.
As a preferred embodiment of the invention, if the continuous alternating frequency of the non-suffering time and the risk time in the operation period exceeds the continuous alternating frequency threshold, or the expanding amplitude of the numerical difference corresponding to the non-suffering time duty ratio and the risk time duty ratio in the operation period exceeds the numerical difference expanding amplitude threshold, the abnormal operation of the analysis object in the operation period is judged, an operation risk signal is generated and sent to a test platform, and the test platform carries out operation control on the current analysis object after receiving the operation risk signal;
and if the continuous alternating frequency of the non-suffering time and the risk time in the operation period does not exceed the continuous alternating frequency threshold, and the expansion amplitude of the numerical difference corresponding to the non-suffering time duty ratio and the risk time duty ratio in the operation period does not exceed the numerical difference expansion amplitude threshold, judging that the analysis object in the operation period operates normally, and performing performance analysis on the analysis object.
As a preferred embodiment of the present invention, the temperature peak reduction speed of the analysis object thermal protection point in the non-affected time in the operation period and the temperature instantaneous recovery value thereof after the temperature peak are obtained; acquiring the fastest time for under-voltage locking of an internal circuit of an analysis object in a risk time in an operation period and the delay time for unlocking after voltage adjustment is accessed during under-voltage locking; obtaining a continuity test coefficient of an analysis object in an operation period through analysis; comparing the continuity test coefficient of the analysis object within the operation period with a continuity test coefficient threshold value: if the continuity test coefficient of the analysis object exceeds the continuity test coefficient threshold value in the operation period, judging that the continuity test of the analysis object is qualified, generating an electrical parameter qualified signal and sending the electrical parameter qualified signal to a test platform; if the continuity test coefficient of the analysis object in the operation period does not exceed the continuity test coefficient threshold value, judging that the continuity test of the analysis object is unqualified, generating a test unqualified signal and sending the test unqualified signal to the test platform.
As a preferred embodiment of the invention, the operation of the fault impact analysis unit is as follows:
the method comprises the steps of obtaining an overlapping time period of an increasing time period of the same type of fault frequency of an analysis object and an extending time period of the same type of fault maintenance time in the analysis object continuity test process, obtaining a reducing speed of the quality guarantee average time of fault operation and maintenance in the analysis object continuity test process, and comparing the overlapping time period of the increasing time period of the same type of fault frequency of the analysis object and the extending time period of the same type of fault maintenance time in the analysis object continuity test process and the reducing speed of the quality guarantee average time of the fault operation and maintenance in the analysis object continuity test process with an overlapping time period threshold value and a time period reducing speed threshold value respectively.
As a preferred embodiment of the present invention, if an overlapping time period of an increasing time period of a fault frequency of the same type as that of the fault maintenance time period of the same type exceeds an overlapping time period threshold in the process of the continuity test of the analysis object, or if a decreasing speed of a quality guarantee average time period of the fault operation and maintenance in the process of the continuity test of the analysis object exceeds a time period decreasing speed threshold, determining that the fault influence is uncontrollable in the process of the continuity test of the analysis object, generating a fault high influence signal and transmitting the fault high influence to the continuity test unit;
if the overlapping time period of the increasing time period of the fault frequency of the same type as the maintaining time period of the fault of the same type in the continuity test process of the analysis object does not exceed the threshold value of the overlapping time period, and the reducing speed of the quality guarantee average time of the fault operation and maintenance in the continuity test process of the analysis object does not exceed the threshold value of the reducing speed of the time period, judging that the influence of the fault in the continuity test process of the analysis object is controllable, generating a low influence signal of the fault and transmitting the low influence of the fault to a test platform.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, analysis and detection are carried out on different operation periods of the IPM, and whether the electrical parameters corresponding to the steady state period and the floating state period of the IPM have influence is judged, so that the detection efficiency of the steady state electrical parameters of the IPM is improved, and the operation stability of the IPM is ensured; and detecting the analysis object parameters in the floating state time period, judging whether the performance parameters of the analysis object in the floating state time period meet the actual requirements, performing quality evaluation on the operation of the analysis object, and performing operation performance supervision according to the floating state time period and the steady state time period, so that the operation hidden danger can be detected more accurately and timely, and the timeliness of adjusting the whole of the analysis object is improved.
2. In the invention, the continuity test is carried out on the analysis object, and whether the electrical parameter performance test of the current analysis object is qualified or not is judged, so that the operation efficiency of the analysis object is evaluated and detected, and the working performance and the operation stability of the analysis object are improved; and (3) carrying out fault influence analysis in the continuity test process of the analysis object, judging whether the fault influence is controllable in the continuity test process of the current analysis object, and avoiding the problem that the fault of the analysis object is uncontrollable in the continuity test process, so that the continuity test efficiency of the analysis object is reduced and the test accuracy of the analysis object is influenced.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic block diagram of an IPM electrical parameter testing system based on data analysis according to the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1, an IPM electrical parameter testing system based on data analysis includes a testing platform, wherein the testing platform is communicatively connected with a steady state parameter detecting unit, a floating parameter detecting unit, a continuity testing unit and a fault impact analyzing unit;
in the IPM operation process, the test platform generates a steady-state parameter detection signal and sends the steady-state parameter detection signal to the steady-state parameter detection unit, and after the steady-state parameter detection unit receives the steady-state parameter detection signal, analysis and detection are carried out on different operation periods of the IPM, and whether the electrical parameters corresponding to the IPM in the steady-state period and the floating period have influence is judged, so that the detection efficiency of the steady-state electrical parameters of the IPM is improved, and the operation stability of the IPM is ensured;
setting an IPM as an analysis object, acquiring real-time bearing electric parameters of the analysis object, wherein the electric parameters are represented as parameters such as voltage, current and the like, comparing the real-time bearing electric parameters of the analysis object with real-time rated electric parameters of the analysis object to acquire an electric parameter floating value, and marking the current period as a steady-state period if the reciprocating floating amount of the electric parameter floating value does not exceed a set threshold value; otherwise, if the reciprocating floating quantity of the floating value of the electric parameter exceeds a set threshold value, marking the current period as a floating period;
the method comprises the steps of obtaining the reciprocating floating amount of the performance parameter of the corresponding analysis object when the analysis object does not have the electric parameter floating in a steady-state period and the total ratio of the duration constant of the performance parameter of the corresponding analysis object when the analysis object has the electric parameter floating in the steady-state period to the steady-state period, and comparing the reciprocating floating amount of the performance parameter of the corresponding analysis object when the analysis object does not have the electric parameter floating in the steady-state period and the total ratio of the duration constant of the performance parameter of the corresponding analysis object when the analysis object has the electric parameter floating in the steady-state period with the floating amount threshold and the duration total ratio threshold respectively: wherein, the performance parameter is expressed as parameters such as heat dissipation speed, thermal resistance and the like of the analysis object;
if the reciprocating floating amount of the performance parameter of the analysis object exceeds the floating amount threshold value when the analysis object does not float in the steady-state period, or the continuous constant time length of the performance parameter of the analysis object is continuous and the total duty ratio of the analysis object in the steady-state period does not exceed the total duty ratio threshold value of the time length, judging that the steady-state parameter of the analysis object detects abnormality, generating a steady-state parameter abnormality signal and sending the steady-state parameter abnormality signal to a test platform, and after the test platform receives the steady-state parameter abnormality signal, performing performance maintenance on the analysis object;
if the reciprocating floating amount of the performance parameter of the corresponding analysis object does not exceed the floating amount threshold value when the analysis object does not float in the steady-state period, and the duration of the continuous constant time period of the performance parameter of the corresponding analysis object and the total duty ratio of the steady-state period exceed the duration total duty ratio threshold value when the analysis object has the electric parameter floating in the steady-state period, judging that the steady-state parameter detection of the analysis object is normal, generating a steady-state parameter normal signal and sending the steady-state parameter normal signal to the continuity test unit;
meanwhile, a floating state parameter detection signal is generated and sent to a floating state parameter detection unit, after the floating state parameter detection unit receives the floating state parameter detection signal, analysis object parameter detection is carried out on a floating state period, whether the performance parameter of an analysis object in the floating state period meets the actual requirement is judged, so that the quality evaluation is carried out on the operation of the analysis object, and the operation performance supervision is carried out according to the floating state period and the steady state period, so that the operation hidden danger can be detected more accurately and timely, and the timeliness of adjusting and adjusting the analysis object is improved;
the peak value increasing speed of the sustainable time length when the innumerable values of the analysis object performance parameters float in the floating state period and the extending speed of the time length when the numerical values of the analysis object performance parameters float in the floating state period are recovered to the set range, and the peak value increasing speed of the sustainable time length when the innumerable values of the analysis object performance parameters float in the floating state period and the extending speed of the time length when the numerical values of the analysis object performance parameters float in the floating state period are recovered to the set range are compared with the peak value increasing speed threshold and the time length extending speed threshold respectively:
if the peak value increasing speed of the sustainable time period when the countless values of the performance parameters of the analysis object float exceeds the peak value increasing speed threshold, or the extending speed of the consumed time period when the performance parameter values of the analysis object float within a set range is recovered to exceed the time period extending speed threshold after the values of the performance parameters of the analysis object float, judging that the parameters of the analysis object in the floating period are abnormal in detection, generating a floating parameter detection abnormal signal and sending the floating parameter detection abnormal signal to a test platform, and after the test platform receives the floating parameter detection abnormal signal, performing performance maintenance on the analysis object;
if the peak increasing speed of the sustainable duration of the numerous values of the performance parameter of the analysis object in the floating state period does not exceed the peak increasing speed threshold, and the extending speed of the consumed duration of the analysis object in the floating state period after the performance parameter value of the analysis object in the floating state period is floated does not exceed the duration extending speed threshold, judging that the parameter detection of the analysis object in the floating state period is normal, generating a floating state parameter detection normal signal and transmitting the floating state parameter detection normal signal to a continuity test unit;
after receiving the normal signals of the floating state parameter detection and the normal signals of the steady state parameter detection, the continuity test unit carries out continuity test on the analysis object and judges whether the current electrical parameter performance test of the analysis object is qualified or not, so that the operation efficiency of the analysis object is evaluated and detected, and the working performance and the operation stability of the analysis object are improved;
respectively setting the normal time of the detection of the floating state parameter in the floating state period and the normal time of the steady state parameter in the steady state period as the normal time of the floating state and the normal time of the steady state, uniformly marking the normal time as the unoccupied time, and marking the time outside the unoccupied time in the operation period as the risk time; continuously analyzing the normal time and the normal time of the floating state in the running period of the current analysis object, obtaining continuous alternating frequency of the unoccupied time and the risk time in the running period and the expansion amplitude of the numerical difference corresponding to the ratio of the unoccupied time to the ratio of the risk time in the running period, and comparing the continuous alternating frequency of the unoccupied time and the risk time in the running period and the expansion amplitude of the numerical difference corresponding to the ratio of the unoccupied time to the ratio of the risk time in the running period with a continuous alternating frequency threshold and a numerical difference expansion amplitude threshold respectively:
if the continuous alternating frequency of the non-suffering time and the risk time in the operation period exceeds a continuous alternating frequency threshold, or the expansion amplitude of the numerical difference corresponding to the non-suffering time duty ratio and the risk time duty ratio in the operation period exceeds a numerical difference expansion amplitude threshold, judging that the operation of an analysis object in the operation period is abnormal, generating an operation risk signal and sending the operation risk signal to a test platform, and performing operation control on the current analysis object after the test platform receives the operation risk signal;
if the continuous alternating frequency of the non-suffering time and the risk time in the operation period does not exceed the continuous alternating frequency threshold, and the expansion amplitude of the numerical difference corresponding to the non-suffering time duty ratio and the risk time duty ratio in the operation period does not exceed the numerical difference expansion amplitude threshold, judging that the analysis object in the operation period operates normally, and performing performance analysis on the analysis object;
acquiring the temperature peak reduction speed of the thermal protection point of the analysis object in the non-affected time and the temperature instantaneous recovery value thereof after the temperature peak in the operation period, and marking the temperature peak reduction speed of the thermal protection point of the analysis object in the non-affected time and the temperature instantaneous recovery value thereof after the temperature peak in the operation period as WDF and HFZ respectively; acquiring the fastest time for under-voltage locking of the internal circuit of the analysis object in the risk time in the operation period and the delay time for locking and unlocking after voltage adjustment is connected in the under-voltage locking, and marking the fastest time for under-voltage locking of the internal circuit of the analysis object in the risk time in the operation period and the delay time for locking and unlocking after voltage adjustment is connected in the under-voltage locking as ZKH and YCS respectively;
by the formulaObtaining a continuity test coefficient G of an analysis object in an operation period, wherein f1, f2, f3 and f4 are preset proportionality coefficients, and f1 is more than f2 and more than f3 and more than f4 is more than 1;
comparing the continuity test coefficient G of the analysis object in the operation period with a continuity test coefficient threshold value:
if the continuity test coefficient G of the analysis object exceeds the continuity test coefficient threshold value in the operation period, judging that the continuity test of the analysis object is qualified, generating an electrical parameter qualified signal and sending the electrical parameter qualified signal to a test platform; if the continuity test coefficient G of the analysis object does not exceed the continuity test coefficient threshold value in the operation period, judging that the continuity test of the analysis object is unqualified, generating a test unqualified signal and sending the test unqualified signal to a test platform;
after receiving the test failure signal, the test platform generates a fault influence analysis signal and sends the fault influence analysis signal to a fault influence analysis unit, and after receiving the fault influence analysis signal, the fault influence analysis unit performs fault influence analysis on the continuity test process of the analysis object, judges whether the fault influence is controllable or not in the continuity test process of the current analysis object, and avoids the problem that the fault of the analysis object is uncontrollable in the continuity test process, so that the continuity test efficiency of the analysis object is reduced and the test accuracy of the analysis object is influenced;
acquiring an overlapping time period of an analysis object type fault frequency increasing period and a same type fault maintenance duration extending period in the analysis object continuity testing process, simultaneously acquiring a reducing speed of a fault operation and maintenance quality guarantee average duration in the analysis object continuity testing process, and comparing the overlapping time period of the analysis object type fault frequency increasing period and the same type fault maintenance duration extending period in the analysis object continuity testing process and the reducing speed of the fault operation and maintenance quality guarantee average duration in the analysis object continuity testing process with an overlapping time period threshold value and a duration reducing speed threshold value respectively: the quality guarantee duration of the fault operation and maintenance is represented as the duration of no fault after the operation and maintenance of the current fault is completed;
if the overlapping time period of the increasing time period of the same type of fault frequency and the extending time period of the same type of fault maintenance duration of the analysis object in the process of continuously testing the analysis object exceeds the threshold value of the overlapping time period, or the decreasing speed of the average duration of the quality guarantee period of the fault operation and maintenance in the process of continuously testing the analysis object exceeds the threshold value of the decreasing speed of the duration, judging that the influence of the fault in the process of continuously testing the analysis object is uncontrollable, generating a high-influence signal of the fault and transmitting the high-influence of the fault to a continuously testing unit, and after the high-influence signal of the fault is received by the continuously testing unit, retesting the analysis object in the current time period;
if the overlapping time period of the increasing time period of the fault frequency of the same type as the maintaining time period of the fault of the same type in the continuity test process of the analysis object does not exceed the threshold value of the overlapping time period, and the reducing speed of the quality guarantee average time of the fault operation and maintenance in the continuity test process of the analysis object does not exceed the threshold value of the reducing speed of the time period, judging that the influence of the fault in the continuity test process of the analysis object is controllable, generating a low influence signal of the fault and transmitting the low influence of the fault to a test platform.
The formulas are all formulas obtained by collecting a large amount of data for software simulation and selecting a formula close to a true value, and coefficients in the formulas are set by a person skilled in the art according to actual conditions;
when the invention is used, the steady-state parameter detection unit analyzes and detects different running time periods of the IPM, the IPM is set as an analysis object, the real-time bearing electric parameter of the analysis object is obtained, the electric parameter floating value is obtained by comparing the real-time bearing electric parameter of the analysis object with the real-time rated electric parameter of the analysis object, and if the reciprocating floating amount of the electric parameter floating value does not exceed a set threshold value, the current time period is marked as the steady-state time period; otherwise, if the reciprocating floating quantity of the floating value of the electric parameter exceeds a set threshold value, marking the current period as a floating period; after the steady-state period analysis is completed, the steady-state period is subjected to analysis object parameter detection through the floating state parameter detection unit, after the floating state period analysis is completed, and the steady-state period analysis and the floating state period analysis are both normal, the continuity test unit is used for carrying out continuity test on the analysis object, judging whether the electrical parameter performance test of the current analysis object is qualified or not, and carrying out fault influence analysis on the continuity test process of the analysis object through the fault influence analysis unit when the continuity test of the analysis object is abnormal, judging whether the fault influence is controllable in the continuity test process of the current analysis object, and carrying out continuity re-detection if the fault influence of the analysis object is uncontrollable.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The IPM electrical parameter testing system based on data analysis is characterized by comprising a testing platform, wherein the testing platform is in communication connection with a steady-state parameter detection unit, a floating parameter detection unit, a continuity testing unit and a fault influence analysis unit;
the steady-state parameter detection unit is used for analyzing and detecting different running time periods of the IPM, setting the IPM as an analysis object, acquiring real-time bearing electric parameters of the analysis object, comparing the real-time bearing electric parameters of the analysis object with real-time rated electric parameters of the analysis object to acquire electric parameter floating values, and marking the current time period as a steady-state time period if the reciprocating floating amount of the electric parameter floating values does not exceed a set threshold value; otherwise, if the reciprocating floating quantity of the floating value of the electric parameter exceeds a set threshold value, marking the current period as a floating period; after the steady-state period analysis is completed, the floating state period is subjected to analysis object parameter detection through a floating state parameter detection unit, and the running process of the floating state parameter detection unit is as follows:
the method comprises the steps of obtaining the peak value increasing speed of a sustainable time length when countless values of the analysis object performance parameter float in a floating state period and the extending speed of a time length consumed by recovering the value float of the analysis object performance parameter in the floating state period to a set range after the value float of the analysis object performance parameter float, and comparing the peak value increasing speed of the sustainable time length when countless values of the analysis object performance parameter float in the floating state period and the extending speed of the time length consumed by recovering the value float of the analysis object performance parameter in the floating state period with a peak value increasing speed threshold and a time length extending speed threshold respectively; after the analysis of the floating state time period is finished, and the steady state time period analysis and the floating state time period analysis are normal, the continuity test unit carries out the continuity test on the analysis object, judges whether the electrical parameter performance test of the current analysis object is qualified or not, and the operation process of the continuity test unit is as follows:
respectively setting the normal time of the detection of the floating state parameter in the floating state period and the normal time of the steady state parameter in the steady state period as the normal time of the floating state and the normal time of the steady state, uniformly marking the normal time as the unoccupied time, and marking the time outside the unoccupied time in the operation period as the risk time; continuously analyzing the normal time and the normal time of the floating state in the running period of the current analysis object, obtaining continuous alternating frequency of the unoccupied time and the risk time in the running period and the expansion amplitude of the numerical difference corresponding to the ratio of the unoccupied time to the ratio of the risk time in the running period, and comparing the continuous alternating frequency of the unoccupied time and the risk time in the running period and the expansion amplitude of the numerical difference corresponding to the ratio of the unoccupied time to the ratio of the risk time in the running period with a continuous alternating frequency threshold and a numerical difference expansion amplitude threshold respectively;
and when the continuity test of the analysis object is abnormal, performing fault influence analysis on the continuity test process of the analysis object through a fault influence analysis unit, judging whether the fault influence is controllable in the continuity test process of the current analysis object, and if the fault influence of the analysis object is uncontrollable, performing continuity re-detection.
2. The IPM electrical parameter testing system according to claim 1, wherein the steady state parameter detection unit operates as follows:
and the reciprocating floating amount of the performance parameter of the corresponding analysis object in the steady-state period when the analysis object does not have the electric parameter floating and the total ratio of the continuous constant time length of the performance parameter of the corresponding analysis object in the steady-state period when the analysis object has the electric parameter floating are obtained, and the reciprocating floating amount of the performance parameter of the corresponding analysis object in the steady-state period when the analysis object does not have the electric parameter floating and the total ratio of the continuous constant time length of the performance parameter of the corresponding analysis object in the steady-state period when the analysis object has the electric parameter floating are respectively compared with the floating amount lifting threshold and the total ratio threshold of the time length.
3. The IPM electrical parameter testing system based on data analysis according to claim 2, wherein if the reciprocating floating amount of the performance parameter of the corresponding analysis object exceeds the floating amount threshold value when the analysis object is not floated in the steady-state period, or the total ratio of the duration of the continuous constant performance parameter of the corresponding analysis object to the total ratio of the steady-state period is not exceeded when the analysis object is floated in the steady-state period, determining that the steady-state parameter of the analysis object is abnormal, generating a steady-state parameter abnormal signal and transmitting the steady-state parameter abnormal signal to the testing platform;
if the reciprocating floating amount of the performance parameter of the corresponding analysis object does not exceed the floating amount threshold value when the analysis object does not float in the steady-state period, and the duration of the continuous constant time period of the performance parameter of the corresponding analysis object and the total duty ratio of the steady-state period exceed the duration total duty ratio threshold value when the analysis object floats in the steady-state period, judging that the steady-state parameter detection of the analysis object is normal, generating a steady-state parameter normal signal and sending the steady-state parameter normal signal to the continuity testing unit.
4. The IPM electrical parameter testing system based on data analysis according to claim 1, wherein if a peak increase speed of a sustainable duration of a floating value of the performance parameter of the analysis object in the floating period exceeds a peak increase speed threshold, or an extension speed of a duration consumed for recovering to a set range after the value of the performance parameter of the analysis object in the floating period is floating exceeds a duration extension speed threshold, determining that the parameter of the analysis object in the floating period is abnormal, generating a floating parameter detection abnormal signal and transmitting the floating parameter detection abnormal signal to the test platform;
if the peak increasing speed of the sustainable duration of the numerous values of the performance parameter of the analysis object in the floating state period does not exceed the peak increasing speed threshold, and the extending speed of the consumed duration of the analysis object in the floating state period after the performance parameter value of the analysis object in the floating state period is floated does not exceed the duration extending speed threshold, judging that the parameter detection of the analysis object in the floating state period is normal, generating a floating state parameter detection normal signal and sending the floating state parameter detection normal signal to the continuity test unit.
5. The IPM electrical parameter testing system based on data analysis according to claim 1, wherein if the continuous alternating frequency of the time of no trouble and the time of risk exceeds the continuous alternating frequency threshold in the operation period, or the expansion amplitude of the corresponding numerical difference between the time of no trouble and the time of risk exceeds the numerical difference expansion amplitude threshold in the operation period, determining that the analysis object in the operation period is abnormal, generating an operation risk signal and transmitting the operation risk signal to the test platform, and after receiving the operation risk signal, the test platform performs operation control on the current analysis object;
and if the continuous alternating frequency of the non-suffering time and the risk time in the operation period does not exceed the continuous alternating frequency threshold, and the expansion amplitude of the numerical difference corresponding to the non-suffering time duty ratio and the risk time duty ratio in the operation period does not exceed the numerical difference expansion amplitude threshold, judging that the analysis object in the operation period operates normally, and performing performance analysis on the analysis object.
6. The IPM electrical parameter testing system according to claim 5, wherein the temperature peak reduction speed of the thermal protection point of the analysis object and the temperature instantaneous restoration value thereof after the temperature peak are obtained in the no-trouble time in the operation period; acquiring the fastest time for under-voltage locking of an internal circuit of an analysis object in a risk time in an operation period and the delay time for unlocking after voltage adjustment is accessed during under-voltage locking; obtaining a continuity test coefficient of an analysis object in an operation period through analysis; comparing the continuity test coefficient of the analysis object within the operation period with a continuity test coefficient threshold value: if the continuity test coefficient of the analysis object exceeds the continuity test coefficient threshold value in the operation period, judging that the continuity test of the analysis object is qualified, generating an electrical parameter qualified signal and sending the electrical parameter qualified signal to a test platform; if the continuity test coefficient of the analysis object in the operation period does not exceed the continuity test coefficient threshold value, judging that the continuity test of the analysis object is unqualified, generating a test unqualified signal and sending the test unqualified signal to the test platform.
7. The IPM electrical parameter testing system according to claim 1, wherein the fault impact analysis unit operates as follows:
the method comprises the steps of obtaining an overlapping time period of an increasing time period of the same type of fault frequency of an analysis object and an extending time period of the same type of fault maintenance time in the analysis object continuity test process, obtaining a reducing speed of the quality guarantee average time of fault operation and maintenance in the analysis object continuity test process, and comparing the overlapping time period of the increasing time period of the same type of fault frequency of the analysis object and the extending time period of the same type of fault maintenance time in the analysis object continuity test process and the reducing speed of the quality guarantee average time of the fault operation and maintenance in the analysis object continuity test process with an overlapping time period threshold value and a time period reducing speed threshold value respectively.
8. The IPM electrical parameter testing system according to claim 7, wherein if the overlapping time period of the increased period of the same type of fault frequency and the prolonged period of the same type of fault maintenance duration of the analysis object exceeds the overlapping time period threshold value during the continuity test of the analysis object or the decreasing speed of the average period of the quality guarantee of the fault operation and maintenance exceeds the decreasing speed threshold value of the period during the continuity test of the analysis object, it is determined that the fault influence is uncontrollable during the continuity test of the analysis object, a fault high influence signal is generated and the fault high influence is sent to the continuity test unit;
if the overlapping time period of the increasing time period of the fault frequency of the same type as the maintaining time period of the fault of the same type in the continuity test process of the analysis object does not exceed the threshold value of the overlapping time period, and the reducing speed of the quality guarantee average time of the fault operation and maintenance in the continuity test process of the analysis object does not exceed the threshold value of the reducing speed of the time period, judging that the influence of the fault in the continuity test process of the analysis object is controllable, generating a low influence signal of the fault and transmitting the low influence of the fault to a test platform.
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