CN113500760B - Extrusion molding speed compensation method, system, computer equipment and storage medium - Google Patents
Extrusion molding speed compensation method, system, computer equipment and storage medium Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92952—Drive section, e.g. gearbox, motor or drive fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0075—Light guides, optical cables
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an extrusion molding speed compensation method, an extrusion molding speed compensation system, computer equipment and a storage medium, wherein the method comprises the following steps: acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and a production speed, an actual extrusion molding speed and a compensation speed which correspond to the theoretical extrusion molding speed; and determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated according to a compensation calculation formula. According to the invention, the actual extrusion molding speed corresponding to any theoretical extrusion molding speed is determined through the pre-established relation mapping table and the compensation calculation formula, the compensation of the theoretical extrusion molding speed is more reasonable, the problem of speed mutation during compensation can be prevented, the stability of the outer diameter of the optical cable is ensured, and meanwhile, the degree of automation and the efficiency are very high because no manual participation is needed.
Description
Technical Field
The present invention relates to the technical field of extrusion molding machines, and in particular, to an extrusion molding speed compensation method, an extrusion molding speed compensation system, a computer device, and a storage medium.
Background
The stability of the outer diameter of the cable is an important indicator for measuring the performance of the cable. When one says that the outer diameter of the optical cable is unstable, it means that the outer diameter of the optical cable is neglected in the length direction, and the outer diameter of the whole is not uniform, which is a quality problem for manufacturers. Because each cable has its standard outer diameter, the negligence not only wastes material, but also may cause construction failure, and the negligence may cause the cable to be too thin, thereby being easy to scratch.
In a normal production process, the extrusion speed of the extruder determines the outer diameter of the cable with a fixed production speed. Specifically, in the initial production stage, the production speed and the extrusion molding speed are proportioned to a proper outer diameter under the conditions of low speed and single action, for example, when the production speed is 10m/min, the extrusion molding speed is adjusted to be 5r/min, and then the outer diameter of the optical cable reaches a qualified value, namely, if the outer diameter of the optical cable is required to be qualified, the production speed and the extrusion molding speed must be 2:1, at this time, switching to linkage (linkage is the ratio of a fixed production speed to an extrusion molding speed, namely, when the production speed is increased to 100m/min, the extrusion molding speed is increased to 50r/min according to the ratio of 2:1), and after switching to linkage, carrying out production at the speed increased to 100m/min, then according to the following 2:1, the outer diameter of the optical cable in each speed section is theoretically in a qualified range, but the outer diameter of the optical cable in each speed section is not in the qualified range in the actual situation due to the influence of factors such as actual environment, temperature, mechanical abrasion, raw material quality and the like.
At present, the existing control scheme for the outer diameter stability of the optical cable is mainly divided into two types, one type is that whether the outer diameter of the optical cable is larger or smaller is judged manually through a visual observation mode, and the extrusion molding speed is manually modified when the outer diameter of the optical cable is larger or smaller so as to achieve the aim of uniform outer diameter, but the greatest defect of the scheme is that manual participation is needed, labor is consumed, and certain hysteresis is also needed; the other is that in the speed control program, the speed is enlarged or reduced, for example, the known speed is 30m/min, the outer diameter is smaller than 0.2mm, at this time, the extrusion speed is 20r/min, when the extrusion speed reaches 22r/min through debugging, the outer diameter reaches the normal value, the speed is assigned to the extrusion speed by multiplying the coefficient in the program control, namely, the original speed is assigned to the extrusion speed by multiplying the coefficient, but the greatest defect of the scheme is that the extrusion speed is caused to change in a jumping way, namely, the extrusion speed is suddenly changed from 20r/min to 22r/min in the example, and the outer diameter is inevitably caused to have a sudden change.
Therefore, how to improve the existing control scheme of the outer diameter stability of the optical cable or provide a new control scheme of the outer diameter stability of the optical cable is a technical problem to be solved by those skilled in the art.
The above information is presented as background information only to aid in the understanding of the present disclosure and is not intended or admitted to be prior art relative to the present disclosure.
Disclosure of Invention
The invention provides an extrusion molding speed compensation method, an extrusion molding speed compensation system, computer equipment and a storage medium, which are used for solving the defects in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
in a first aspect, embodiments of the present invention provide a method of compensating for extrusion speed, the method comprising:
acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and a production speed, an actual extrusion molding speed and a compensation speed which correspond to the theoretical extrusion molding speed;
determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated according to the following compensation calculation formula:
(r2-r1)*(a-b)/c+r1+a；
wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
Further, in the extrusion speed compensation method, the step of determining the interval in which the theoretical extrusion speed to be compensated is located by searching the relation mapping table, and calculating the actual extrusion speed after the theoretical extrusion speed to be compensated according to the following compensation calculation formula includes:
judging whether the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated exists or not by searching the relation mapping table;
if yes, taking the actual extrusion molding speed corresponding to the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated in the relation mapping table as the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated;
if not, determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated according to the following compensation calculation formula.
Further, in the extrusion speed compensation method, before the step of obtaining the preset relationship map, the method further includes:
the relation mapping table is pre-established and stored.
Further, in the extrusion speed compensation method, after the step of determining the interval in which the theoretical extrusion speed to be compensated is located by searching the relation mapping table, and calculating the actual extrusion speed after the theoretical extrusion speed to be compensated according to the following compensation calculation formula, the method further includes:
and updating the calculated theoretical extrusion molding speed to be compensated and the compensated actual extrusion molding speed corresponding to the theoretical extrusion molding speed to be compensated into the relation mapping table.
In a second aspect, embodiments of the present invention provide an extrusion speed compensation system, the system comprising:
the mapping table acquisition module is used for acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and production speeds, actual extrusion molding speeds and compensation speeds corresponding to the theoretical extrusion molding speeds;
the compensation determining module is used for determining the interval where the theoretical extrusion molding speed to be compensated is located by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated according to the following compensation calculation formula:
(r2-r1)*(a-b)/c+r1+a；
wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
Further, in the extrusion speed compensation system, the compensation determining module is specifically configured to:
judging whether the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated exists or not by searching the relation mapping table;
if yes, taking the actual extrusion molding speed corresponding to the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated in the relation mapping table as the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated;
if not, determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated according to the following compensation calculation formula.
Further, in the extrusion speed compensation system, the system further includes a mapping table building module for:
the relation mapping table is pre-established and stored.
Further, in the extrusion speed compensation system, the system further includes a mapping table updating module for:
and updating the calculated theoretical extrusion molding speed to be compensated and the compensated actual extrusion molding speed corresponding to the theoretical extrusion molding speed to be compensated into the relation mapping table.
In a third aspect, embodiments of the present invention provide a computer device comprising a memory storing a computer program and a processor implementing the extrusion speed compensation method according to any one of the preceding aspects when the computer program is executed by the processor.
In a fourth aspect, embodiments of the present invention provide a storage medium containing computer-executable instructions for execution by a computer processor to implement the extrusion speed compensation method of any of the above aspects.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
according to the extrusion molding speed compensation method, the system, the computer equipment and the storage medium, the actual extrusion molding speed corresponding to any theoretical extrusion molding speed is determined through the pre-established relation mapping table and the compensation calculation formula, the compensation of the theoretical extrusion molding speed is more reasonable, the problem of speed mutation during compensation can be prevented, the stability of the outer diameter of the optical cable is ensured, and meanwhile, the degree of automation and the efficiency are very high because manual participation is not needed.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic flow chart of an extrusion speed compensation method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of an extrusion speed compensation method according to a second embodiment of the present invention;
FIG. 3 is a schematic functional block diagram of an extrusion speed compensation system according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computer device according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only some embodiments of the present invention, not all embodiments of the present invention. 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.
In the description of the present invention, it will be understood that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Furthermore, the terms "long," "short," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description of the present invention, and are not intended to indicate or imply that the apparatus or elements referred to must have this particular orientation, operate in a particular orientation configuration, and thus should not be construed as limiting the invention.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Example 1
In view of the defects existing in the prior art, the inventor actively researches and innovates based on the rich practical experience and professional knowledge in the industry for many years and the application of the theory, so as to create a feasible control technology for the outer diameter stability of the optical cable, and the practical control technology is more practical. After continuous research, design and repeated test and improvement, the invention with practical value is finally created.
Referring to fig. 1, fig. 1 is a schematic flow chart of an extrusion speed compensation method disclosed in an embodiment of the present invention, which is suitable for a scenario where an outer diameter of an optical cable is unstable when an extruder produces the optical cable, and the method is performed by an extrusion speed compensation system, which may be implemented by software and/or hardware, and integrated into the extruder or a controller thereof. As shown in fig. 1, the extrusion speed compensation method may include the steps of:
s101, acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and production speeds, actual extrusion molding speeds and compensation speeds corresponding to the theoretical extrusion molding speeds.
It should be noted that if the production speed and the theoretical extrusion speed are 2:1, the outer diameter of the cable produced at each theoretical extrusion speed is theoretically within acceptable limits, but this is not the case, and reference is made to the examples in table 1 below.
Table 1:
it can be seen from table 1 that, although the extrusion speed and the production speed are in a linear function relationship, the outer diameter in this relationship is not acceptable, that is, not every theoretical extrusion speed is equal to the actual extrusion speed in the case of acceptable outer diameter, so that compensation of the theoretical extrusion speed is required, and the compensation speed corresponding to each theoretical extrusion speed can be referred to as an example of the following table 2 (i.e., the relationship map table in this embodiment).
Table 2:
as can be seen from Table 2, at a production speed of 20m/min, the theoretical extrusion speed was 10r/min, but the outer diameter of the optical cable was not acceptable at this time, and it was required to increase to 11.9r/min, and the outer diameter of the optical cable was acceptable, i.e., it was required to compensate for 1.9r/min under the condition of the theoretical extrusion speed, and the other speed sections were similar. If the compensation is performed according to the method in the background art, the compensation is directly performed at 5r/min, 10r/min and the like, for example, 1.9r/min is added on the basis of 10r/min to reach 11.9r/min, and the compensation is not performed on the speed section between 5r/min and 10r/min, for example, the speed section of 9r/min, 8r/min, 7r/min and the like, so that the problem of speed mutation exists. Therefore, the problem of compensating for each speed segment is essentially solved by the present embodiment, so as to prevent speed abrupt change.
In this embodiment, before the step S101, the method further includes:
the relation mapping table is pre-established and stored.
The specific number of theoretical extrusion speeds set in the relational mapping table and the setting value when sequentially increasing are arbitrarily set by the technician. The actual extrusion speed and the compensation speed corresponding to each theoretical extrusion speed are obtained by the technicians based on specific experimental results.
In this example, the theoretical extrusion speeds illustrated in tables 1 and 2 are sequentially increased by a set value of 5, meaning that the difference between every two adjacent theoretical extrusion speeds is 5r/min, i.e., one compensation is made every 5 r/min. Of course, if the accuracy requirement is not high, only one compensation is required at intervals of 10r/min, the setting value of the theoretical extrusion speed illustrated in tables 1 and 2 can be changed from 5 to 10 when the theoretical extrusion speed is sequentially increased, however, according to the actual requirement, 5r/min is enough, and the smaller the setting value, the higher the accuracy is.
S102, determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated according to the following compensation calculation formula:
(r2-r1)*(a-b)/c+r1+a；
wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
It should be noted that, determining the interval in which the theoretical extrusion speed to be compensated is actually determining which two theoretical extrusion speeds lie in the relationship map.
In order to more clearly demonstrate the implementation of the solution of this embodiment, a detailed description will be given below with a specific example.
Assuming that the theoretical extrusion speed to be compensated is 17r/min, it can be determined from table 2 (the relation map) that 17r/min is a range from 15r/min to 20r/min, and the compensation calculation formula is as follows, where r1 is 1.7, r2 is-0.9, a is 17r/min, b is 15r/min to 20r/min, and b is the smaller theoretical extrusion speed in the range from 15r/min to 20r/min, i.e., 15r/min, and c is the set value when the theoretical extrusion speeds in table 2 are sequentially increased, i.e., 5: (-0.9-1.7)/(17-15)/5+1.7+17=17.66 r/min, i.e. the actual extrusion speed after compensation is 17.66r/min when the theoretical extrusion speed to be compensated is 17 r/min.
In this embodiment, after the step S102, the method further includes:
and updating the calculated theoretical extrusion molding speed to be compensated and the compensated actual extrusion molding speed corresponding to the theoretical extrusion molding speed to be compensated into the relation mapping table.
It should be noted that the advantage of updating the calculated record to the relation map is that no repeated calculations are needed if the same theoretical extrusion speed to be compensated is available later.
In addition, after the actual extrusion speed is calculated, the process of controlling the extrusion speed change by the PLC is a process of converting the digital quantity into the analog quantity, that is, the digital quantity range of the hardware interface address is 0-27648, which corresponds to 0-10V of the hardware interface voltage, so that the actual extrusion speed is required to be converted into the digital quantity signal in the program, and the conversion relationship is 0-50r, which corresponds to 0-27648, and the actual extrusion speed (27648/50) is the set speed of the final motor controller.
According to the extrusion molding speed compensation method provided by the embodiment of the invention, the actual extrusion molding speed corresponding to any theoretical extrusion molding speed is determined through the pre-established relation mapping table and the compensation calculation formula, the compensation of the theoretical extrusion molding speed is more reasonable, the problem of speed mutation during compensation can be prevented, the stability of the outer diameter of the optical cable is ensured, and meanwhile, the degree of automation and the efficiency are very high because manual participation is not needed.
Example two
Referring to fig. 2, fig. 2 is a flow chart of an extrusion speed compensation method according to an embodiment of the invention. Based on the technical scheme provided in the first embodiment, step S102 "determines the interval in which the theoretical extrusion speed to be compensated is located by searching the relationship mapping table, and calculates the actual extrusion speed after the theoretical extrusion speed to be compensated according to the following compensation calculation formula, so as to further optimize the theoretical extrusion speed to be compensated. The explanation of the same or corresponding terms as those of the above embodiments will not be repeated here, namely:
judging whether the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated exists or not by searching the relation mapping table;
if yes, taking the actual extrusion molding speed corresponding to the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated in the relation mapping table as the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated;
if not, determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated according to the following compensation calculation formula.
Based on the above optimization, as shown in fig. 2, the extrusion speed compensation method provided in this embodiment may specifically include the following steps:
s201, acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and production speeds, actual extrusion molding speeds and compensation speeds corresponding to the theoretical extrusion molding speeds.
S202, judging whether the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated exists or not by searching the relation mapping table; if yes, step S203 is executed, and if no, step S204 is executed.
S203, taking the actual extrusion molding speed corresponding to the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated in the relation mapping table as the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated.
It should be noted that, in this embodiment, the purpose of adding the theoretical extrusion speed that needs to determine whether the theoretical extrusion speed that is the same as the theoretical extrusion speed to be compensated exists in the relationship map is that if the theoretical extrusion speed to be compensated exists directly in the relationship map, the actual extrusion speed that corresponds to the theoretical extrusion speed that is the same as the theoretical extrusion speed to be compensated in the relationship map may be directly used as the actual extrusion speed after the theoretical extrusion speed to be compensated is compensated. For example, if the theoretical extrusion speed to be compensated is 20r/min, the actual extrusion speed 19.1r/min corresponding to the theoretical extrusion speed 20r/min can be directly used as the actual extrusion speed after the theoretical extrusion speed to be compensated is compensated from table 2, and the actual extrusion speed is not calculated by a compensation calculation formula, so that the waste of calculation force resources can be reduced, and the compensation efficiency is improved.
S204, determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated according to the following compensation calculation formula:
(r2-r1)*(a-b)/c+r1+a；
wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
According to the extrusion molding speed compensation method provided by the embodiment of the invention, the actual extrusion molding speed corresponding to any theoretical extrusion molding speed is determined through the pre-established relation mapping table and the compensation calculation formula, the compensation of the theoretical extrusion molding speed is more reasonable, the problem of speed mutation during compensation can be prevented, the stability of the outer diameter of the optical cable is ensured, and meanwhile, the degree of automation and the efficiency are very high because manual participation is not needed.
Example III
Referring to fig. 3, a functional block diagram of an extrusion speed compensation system according to a third embodiment of the present invention is shown, and the system is suitable for executing the extrusion speed compensation method according to the third embodiment of the present invention. The system specifically comprises the following modules:
the mapping table obtaining module 301 is configured to obtain a preset relationship mapping table, where the relationship mapping table records a plurality of theoretical extrusion speeds sequentially increasing according to a set value, and a production speed, an actual extrusion speed and a compensation speed corresponding to the theoretical extrusion speed;
the compensation determining module 302 is configured to determine, by looking up the relationship mapping table, a section in which the theoretical extrusion speed to be compensated is located, and calculate the actual extrusion speed after the theoretical extrusion speed to be compensated is compensated according to the following compensation calculation formula:
(r2-r1)*(a-b)/c+r1+a；
wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
Preferably, the compensation determining module 302 is specifically configured to:
judging whether the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated exists or not by searching the relation mapping table;
if yes, taking the actual extrusion molding speed corresponding to the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated in the relation mapping table as the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated;
if not, determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated according to the following compensation calculation formula.
Preferably, the system further comprises a mapping table establishing module, configured to:
the relation mapping table is pre-established and stored.
Preferably, the system further comprises a mapping table updating module for:
and updating the calculated theoretical extrusion molding speed to be compensated and the compensated actual extrusion molding speed corresponding to the theoretical extrusion molding speed to be compensated into the relation mapping table.
According to the extrusion molding speed compensation system provided by the embodiment of the invention, the actual extrusion molding speed corresponding to any theoretical extrusion molding speed is determined through the pre-established relation mapping table and the compensation calculation formula, the compensation of the theoretical extrusion molding speed is more reasonable, the problem of speed mutation during compensation can be prevented, the stability of the outer diameter of the optical cable is ensured, and meanwhile, the degree of automation and the efficiency are very high because manual participation is not needed.
The system can execute the method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the method.
Example IV
Fig. 4 is a schematic structural diagram of a computer device according to a fourth embodiment of the present invention. Fig. 4 illustrates a block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention. The computer device 12 shown in fig. 4 is merely an example and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
As shown in FIG. 4, the computer device 12 is in the form of a general purpose computing device. Components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, a bus 18 that connects the various system components, including the system memory 28 and the processing units 16.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory 32. The computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, commonly referred to as a "hard disk drive"). Although not shown in fig. 4, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In such cases, each drive may be coupled to bus 18 through one or more data medium interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored in, for example, memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 42 generally perform the functions and/or methods of the embodiments described herein.
The computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), one or more devices that enable a user to interact with the computer device 12, and/or any devices (e.g., network card, modem, etc.) that enable the computer device 12 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 22. Moreover, computer device 12 may also communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through network adapter 20. As shown, network adapter 20 communicates with other modules of computer device 12 via bus 18. It should be appreciated that although not shown in fig. 4, other hardware and/or software modules may be used in connection with computer device 12, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, for example, to implement the extrusion speed compensation method provided by the embodiment of the present invention.
That is, the processing unit realizes when executing the program: acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and a production speed, an actual extrusion molding speed and a compensation speed which correspond to the theoretical extrusion molding speed; determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated according to the following compensation calculation formula: (r 2-r 1): (a-b)/c+r1+a; wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
Example five
A fifth embodiment of the present invention provides a computer-readable storage medium having stored thereon computer-executable instructions that, when executed by a processor, implement an extrusion speed compensation method as provided by all the inventive embodiments of the present application:
that is, the processor, when executing the computer-executable instructions, implements: acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and a production speed, an actual extrusion molding speed and a compensation speed which correspond to the theoretical extrusion molding speed; determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated according to the following compensation calculation formula: (r 2-r 1): (a-b)/c+r1+a; wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. A method of compensating for extrusion speed, the method comprising: acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and a production speed, an actual extrusion molding speed and a compensation speed which correspond to the theoretical extrusion molding speed; judging whether the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated exists or not by searching the relation mapping table; if yes, taking the actual extrusion molding speed corresponding to the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated in the relation mapping table as the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated; if not, determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated according to the following compensation calculation formula: (r 2-r 1): (a-b)/c+r1+a; wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
2. The extrusion speed compensation method according to claim 1, wherein prior to the step of obtaining a preset relationship map, the method further comprises: the relation mapping table is pre-established and stored.
3. The extrusion speed compensation method according to claim 1, wherein after the step of determining the interval in which the theoretical extrusion speed to be compensated is located by looking up the relationship map, and calculating the actual extrusion speed after the theoretical extrusion speed to be compensated according to the following compensation calculation formula, the method further comprises: and updating the calculated theoretical extrusion molding speed to be compensated and the compensated actual extrusion molding speed corresponding to the theoretical extrusion molding speed to be compensated into the relation mapping table.
4. An extrusion speed compensation system, the system comprising: the mapping table acquisition module is used for acquiring a preset relation mapping table, wherein the relation mapping table records a plurality of theoretical extrusion molding speeds which are sequentially increased according to a set value, and production speeds, actual extrusion molding speeds and compensation speeds corresponding to the theoretical extrusion molding speeds; the compensation determining module is used for judging whether the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated exists or not by searching the relation mapping table; if yes, taking the actual extrusion molding speed corresponding to the theoretical extrusion molding speed which is the same as the theoretical extrusion molding speed to be compensated in the relation mapping table as the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated is compensated; if not, determining the interval of the theoretical extrusion molding speed to be compensated by searching the relation mapping table, and calculating the actual extrusion molding speed after the theoretical extrusion molding speed to be compensated according to the following compensation calculation formula: (r 2-r 1): (a-b)/c+r1+a; wherein r1 is the compensation speed corresponding to the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, r2 is the compensation speed corresponding to the larger theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, a is the theoretical extrusion speed to be compensated, b is the smaller theoretical extrusion speed in the interval of the theoretical extrusion speed to be compensated, and c is the set value when the theoretical extrusion speeds in the relation mapping table are sequentially increased.
5. The extrusion speed compensation system of claim 4 further comprising a map creation module for: the relation mapping table is pre-established and stored.
6. The extrusion speed compensation system of claim 4 further comprising a map update module for: and updating the calculated theoretical extrusion molding speed to be compensated and the compensated actual extrusion molding speed corresponding to the theoretical extrusion molding speed to be compensated into the relation mapping table.
7. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor, when executing the computer program, implements the extrusion speed compensation method of any one of claims 1-3.
8. A storage medium containing computer executable instructions that are executed by a computer processor to implement the extrusion speed compensation method of any one of claims 1-3.
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| JPH10249918A (en) * | 1997-03-14 | 1998-09-22 | Takikawa Eng Kk | Apparatus and method for controlling outer diameter of extrusion line |
| EP1254013B1 (en) * | 2000-02-09 | 2004-05-19 | Davis-Standard Corporation | Method for operating extruder temperature controller with stable temperature reset |
| US6547995B1 (en) * | 2001-09-21 | 2003-04-15 | Stratasys, Inc. | Melt flow compensation in an extrusion apparatus |
| JP2006116791A (en) * | 2004-10-21 | 2006-05-11 | Bridgestone Corp | Rubber extruding speed setting device for rubber extruder |
| US8157556B2 (en) * | 2006-10-16 | 2012-04-17 | Strandex Corporation | Puller speed control device for monitoring the dimensions of an extruded synthetic wood composition |
| CN110103709B (en) * | 2019-05-20 | 2021-04-23 | 北京易控智驾科技有限公司 | Method, system, equipment and medium for controlling opening degree of vehicle pedal |
| CN112448643B (en) * | 2019-09-05 | 2022-07-15 | 广汽埃安新能源汽车有限公司 | Angle error compensation method and device of motor, computer equipment and storage medium |
| CN111579561B (en) * | 2020-05-07 | 2021-02-19 | 维嘉数控科技（苏州）有限公司 | Position point compensation method, device, equipment and storage medium |
| CN111688160B (en) * | 2020-05-20 | 2021-10-22 | 赛轮集团股份有限公司 | Control method for presetting screw rotating speed of extruding machine |
| CN111688145B (en) * | 2020-06-06 | 2020-12-29 | 浙江奥博管业股份有限公司 | Plastic pipe extrusion molding equipment and control method thereof |
| CN112271966B (en) * | 2020-11-09 | 2022-04-12 | 上海首智新能源科技有限公司 | Synchronous motor control method and device capable of suppressing harmonic waves |
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