Temperature control method, device, electronic device and storage medium

Abstract

The embodiment of the present invention relates to a temperature control method, device, electronic device and storage medium. The method is applied to a temperature control system, which includes a controller and a controlled device, and the controlled device includes a heating device and a stretching roller. The method is executed by the controller, and includes: obtaining the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device and the current temperature value of the heating device; obtaining the torque difference ratio according to the target torque value and the current torque value; determining the target compensation temperature value according to the torque difference ratio and the initial compensation temperature value; determining the target temperature value according to the current temperature value and the target compensation temperature value; and controlling the heating device to heat to the target temperature within a preset time period according to the current temperature value and the target temperature value. The required data can be collected in real time through the communication of the controlled device, and the accurate equipment operation data can be used as an adjustment reference, which can better ensure the product yield.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of computer technology, and in particular to a temperature control method, device, electronic device and storage medium. Background Art

[0002] The longitudinal stretching machine is an indispensable key component in the film biaxial stretching equipment. Its function is to heat the molecular bonds of the active film polymer by controlling the coordinated cooperation of the preheating rollers, infrared heating devices, stretching rollers, and shaping rollers, making it easier to break them in the microstructure, forming a tiny pore structure, and making the polymer molecules enter a highly elastic state, thereby stretching the film in the direction of the film path, improving its mechanical properties, and changing the thickness of the product.

[0003] The control of traditional infrared heating devices requires manual setting of the heating temperature to meet the current production speed, and the adjusted temperature can only meet the production needs at a constant speed. When the equipment accelerates or decelerates, because the product passes through the heating zone for different lengths of time, the product will receive different amounts of heat at the same heating temperature. If the same temperature is maintained, the product will receive less heat when produced at high speed, and may receive too much heat when produced at low speed, resulting in different product quality when the equipment accelerates or decelerates. Therefore, when accelerating or decelerating, it is necessary to manually adjust the temperature of the infrared heating device based on one's own experience or the changes in the membrane surface after the speed change. This adjustment method has problems such as time lag and human judgment errors, which will make the adjustment effect unsatisfactory. Summary of the invention

[0004] The present application provides a temperature control method, device, electronic device and storage medium to solve some or all of the problems in the prior art.

[0005] In a first aspect, the present application provides a temperature control method, which is applied to a temperature control system, the system includes a controller and a controlled device, the controlled device includes a heating device and a stretching roller, and the method is executed by the controller, including:

[0006] Acquire a target torque value of the stretching roller, a current torque value of the stretching roller, an initial compensation temperature value of the heating device, and a current temperature value of the heating device;

[0007] According to the target torque value and the current torque value, the torque difference ratio is obtained;

[0008] Determine the target compensation temperature value according to the torque difference ratio and the initial compensation temperature value;

[0009] Determine the target temperature value according to the current temperature value and the target compensation temperature value;

[0010] According to the current temperature value and the target temperature value, the heating device is controlled to heat to the target temperature within a preset time period.

[0011] In this way, the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device and the current temperature value of the heating device are obtained; according to the target torque value and the current torque value, the torque difference ratio is obtained; according to the torque difference ratio and the initial compensation temperature value, the target compensation temperature value is determined; according to the current temperature value and the target compensation temperature value, the target temperature value is determined; according to the current temperature value and the target temperature value, the heating device is controlled to heat to the target temperature within a preset time period. The problem of insufficient or excessive infrared heating before stretching during acceleration and deceleration of the double-drawing device can be solved, and the cumbersome operation that traditional production personnel need to use experience to repeatedly adjust can be solved. The required data (target torque value, current torque value, initial compensation temperature value and current temperature value) can be collected in real time through the communication of the controlled device, and the accurate equipment operation data can be used as an adjustment reference to eliminate the hysteresis and high error rate caused by traditional manual adjustment, which can better ensure the product yield, improve the degree of automation of the equipment, and correspondingly reduce the number of personnel and workload. The temperature control method proposed in the present invention has a significant effect in operation and economy.

[0012] In combination with the first aspect, in a first embodiment of the first aspect of the present invention, before obtaining the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device, and the current temperature value of the heating device, the method further includes:

[0013] Monitoring a preset trigger condition, wherein the preset trigger condition includes detecting an operating speed of the controlled device;

[0014] When the running speed is in a uniform state before the current moment and the speed changes at the current moment, the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device and the current temperature value of the heating device are obtained.

[0015] In this way, relevant data can be obtained in time when the equipment speed changes, thereby ensuring the real-time nature of temperature control.

[0016] In combination with the first aspect, in a second embodiment of the first aspect of the present invention, determining the torque difference ratio according to the target torque value and the current torque value specifically includes:

[0017] The target torque value and the current torque value are input into the proportional integral differential control system PID to obtain the torque difference ratio.

[0018] In combination with the second embodiment of the first aspect, in a third embodiment of the first aspect of the present invention, the method further includes:

[0019] When the target compensation temperature value is less than the minimum compensation temperature value of the preset compensation temperature value range, the minimum compensation temperature value is used as the target compensation temperature value;

[0020] or,

[0021] When the target compensation temperature value is greater than the maximum compensation temperature value of the preset compensation temperature value range, the maximum compensation temperature value is used as the target compensation temperature value.

[0022] In this way, by setting the compensation temperature range for the target compensation temperature value, it is possible to avoid problems such as the compensation temperature being too high or too low, and to avoid problems such as damage to material properties caused by excessive temperature changes.

[0023] In combination with the second embodiment of the first aspect, in a fourth embodiment of the first aspect of the present invention, the method further includes:

[0024] When the target temperature value is less than the minimum target temperature value of the preset target temperature value range, the minimum target temperature value is used as the target temperature value;

[0025] or,

[0026] When the target temperature value is greater than the maximum target temperature value of the preset target temperature value range, the maximum target temperature value is used as the target temperature value.

[0027] In this way, by setting the range of the target temperature value, it is possible to avoid material loss caused by the final temperature being too high or too low after compensation.

[0028] In combination with the first aspect or the first embodiment of the first aspect, in a fifth embodiment of the first aspect of the present invention, according to the current temperature value and the target temperature value, controlling the heating device to heat to the target temperature within a preset time period includes:

[0029] Determine the temperature adjustment ratio according to the current temperature value and the target temperature value;

[0030] Determine the temperature adjustment speed according to the preset time period and temperature adjustment ratio;

[0031] The speed is adjusted according to the temperature to control the heating device to heat to the target temperature.

[0032] In this way, the temperature change can be controlled as smoothly as possible to avoid insufficient change in the material state during rapid heating or cooling, which will prevent the material from entering the target state and hinder subsequent stretching processing.

[0033] In combination with the first aspect to the first embodiment of the first aspect or any one of the third embodiment to the fifth embodiment of the first aspect, in a sixth embodiment of the first aspect of the present invention, the method further includes:

[0034] The heating method of the heating device is infrared heating method.

[0035] In a second aspect, the present application provides a temperature control device, the device comprising: an acquisition module, a processing module, a determination module and a control module;

[0036] An acquisition module, used for acquiring a target torque value of the stretching roller, a current torque value of the stretching roller, an initial compensation temperature value of the heating device, and a current temperature value of the heating device;

[0037] A processing module, configured to obtain a torque difference ratio according to the target torque value and the current torque value;

[0038] A determination module, configured to determine a target compensation temperature value according to the torque difference ratio and the initial compensation temperature value; and determine a target temperature value according to the current temperature value and the target compensation temperature value;

[0039] The control module is used to control the heating device to heat to the target temperature within a preset time period according to the current temperature value and the target temperature value.

[0040] Optionally, the device further comprises: a monitoring module;

[0041] A monitoring module, used to monitor a preset trigger condition, wherein the preset trigger condition includes detecting the operating speed of the controlled device;

[0042] The acquisition module is used to start acquiring the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device and the current temperature value of the heating device when the running speed is in a uniform state before the current moment and the speed changes at the current moment.

[0043] Optionally, the device further comprises: an input module;

[0044] The input module is used to input the target torque value and the current torque value into a proportional integral differential control system PID to obtain the torque difference ratio.

[0045] Optionally, the device comprises:

[0046] The processing module is also used to use the minimum compensation temperature value as the target compensation temperature value when the target compensation temperature value is less than the minimum compensation temperature value of the preset compensation temperature value range; or, when the target compensation temperature value is greater than the maximum compensation temperature value of the preset compensation temperature value range, use the maximum compensation temperature value as the target compensation temperature value.

[0047] Optionally, the device comprises:

[0048] The processing module is also used to use the minimum target temperature value as the target temperature value when the target temperature value is less than the minimum target temperature value of the preset target temperature value range; or to use the maximum target temperature value as the target temperature value when the target temperature value is greater than the maximum target temperature value of the preset target temperature value range.

[0049] Optionally, the device comprises:

[0050] The determination module is further used to determine the temperature adjustment ratio according to the current temperature value and the target temperature value; and determine the temperature adjustment speed according to the preset time period and the temperature adjustment ratio;

[0051] The control module is specifically used to control the heating device to heat to the target temperature according to the temperature adjustment speed.

[0052] Optionally, the heating method of the heating device in the control module is infrared heating.

[0053] In a third aspect, a temperature control system is provided, comprising a controller and a controlled device, wherein the controlled device comprises a heating device and a stretching roller, and the controller is in communication connection with the controlled device;

[0054] The controller is used to implement the steps of the temperature control method as described in any one of the embodiments of the first aspect.

[0055] In a fourth aspect of temperature control, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a controller, the steps of the temperature control method as in any embodiment of the first aspect are implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 A schematic diagram of a longitudinal stretching machine provided by the present invention;

[0057] Figure 2 A schematic diagram of a temperature control method provided by an embodiment of the present invention;

[0058] Figure 3 A schematic flow chart of another temperature control method provided by an embodiment of the present invention;

[0059] Figure 4 A schematic flow chart of another temperature control method provided by an embodiment of the present invention;

[0060] Figure 5 A schematic diagram of the structure of a temperature control device provided by an embodiment of the present invention;

[0061] Figure 6 A schematic diagram of the structure of a temperature control system is provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] To facilitate understanding of the embodiments of the present invention, specific embodiments will be further explained below in conjunction with the accompanying drawings. The embodiments do not constitute a limitation on the embodiments of the present invention.

[0064] In view of the technical problems mentioned in the background technology, an embodiment of the present application provides a temperature control method, which is applied to a temperature control system, the system includes a controller and a controlled device, the controller and the controlled device establish a communication connection, the controlled device includes a heating device and a stretching roller, the method is executed by the controller, and the controlled device is, for example, a film longitudinal stretching machine, specifically, Figure 1 As shown, the film passes through the film path and the longitudinal stretching machine for stretching treatment. The heating tube (1) is used to heat the film material, i.e., the substrate, so that the film enters a highly elastic state. The stretching roller (2) is used to stretch the film material. The cylinder (3) is used to drive the rotation of the stretching roller. This method can automatically adjust the heating temperature in real time according to the changes in relevant parameters in the controlled device to solve the problem that the substrate needs to be manually judged to change the heating temperature when the device changes speed. Figure 2 As shown, Figure 2 A schematic flow chart of a temperature control method provided by an embodiment of the present invention, the method comprising the following steps:

[0065] Step 110, obtaining a target torque value of the stretching roller, a current torque value of the stretching roller, an initial compensation temperature value of the heating device, and a current temperature value of the heating device.

[0066] Specifically, the target torque value and current torque value of the component used for stretching in the controlled device are obtained, where the target torque value is the torque value that stretches the material in the controlled device to the target state, which can be pre-set according to the characteristics of the stretched material, as well as the initial compensation temperature value and current temperature value of the component used for heating, where the initial compensation temperature value is a pre-set compensation temperature value, and different initial compensation temperature values ​​can be set according to the characteristics of the material.

[0067] In an alternative example, for example Figure 1 The longitudinal stretching machine shown obtains the target torque value and current torque value of the stretching roller (1) in the film stretching machine, as well as the initial compensation temperature value and current temperature value of the heating tube (2) in the film stretching machine equipment.

[0068] Step 120, obtaining a torque difference ratio according to the target torque value and the current torque value.

[0069] Specifically, the set target torque value is compared with the current torque value, and an actual deviation percentage is calculated as the torque difference ratio, which can be specifically achieved by the following formula:

[0070] Y=(X 1 -X 2 )÷X 1 (Formula 1)

[0071] Among them, Y is the torque difference ratio, X 1 is the target torque value, X 2 is the current torque value.

[0072] In an optional example, the target torque value and the current torque value determine the torque difference ratio, which can be specifically implemented in the following manner:

[0073] The target torque value and the current torque value are input into the proportional integral differential control system (PID) to obtain the torque difference ratio.

[0074] For example, when the longitudinal stretching machine is decelerating, the target torque value is set to 100Nm, and the actual torque value is 120Nm. The torque difference ratio obtained by the PID control method is about -20%, as shown in Formula 2:

[0075] (100-120) / 100=-20% (Formula 2)

[0076] Step 130: determining a target compensation temperature value according to the torque difference ratio and the initial compensation temperature value.

[0077] Specifically, the torque difference ratio and the temperature difference ratio may be in a linear relationship, and the torque difference ratio is the temperature difference ratio. The temperature value to be compensated is obtained by multiplying the torque difference ratio by the initial compensation temperature value, and the target compensation temperature value is determined, which is specifically achieved by the following formula:

[0078] T c =Y×T s (Formula 3)

[0079] Among them, T s is the target compensation temperature value, Y is the torque difference ratio, i.e., the temperature difference ratio, T s is the initial compensation temperature value.

[0080] In an optional example, the target compensation temperature is determined by using the torque difference ratio -20% obtained by Formula 2. Assuming the initial target compensation temperature is -10 degrees Celsius, the target compensation temperature value is: 2 degrees Celsius.

[0081] Step 140, determining a target temperature value according to the current temperature value and the target compensation temperature value.

[0082] Specifically, the current temperature value is the heating temperature value preset during the operation of the controlled device. When the controlled device is accelerated, the target temperature value is as shown in the following formula:

[0083] T g =T a +T c (Formula 4)

[0084] Among them, T g is the target temperature value, T a is the current temperature value, i.e. the preset temperature value of the controlled device, T c Compensate the target temperature value.

[0085] When the controlled device decelerates, the target temperature value is as follows:

[0086] T g =T a -T c (Formula 5)

[0087] Among them, T g is the target temperature value, T a is the current temperature value, i.e. the preset temperature value of the controlled device, T c Compensate the temperature value for the target.

[0088] Step 150, according to the current temperature value and the target temperature value, controlling the heating device to heat to the target temperature within a preset time period.

[0089] Specifically, when the controlled device is running at a uniform speed, because the process length of the heating device is fixed, when the heat is sufficient, the substrate will soften and enter a high elastic state, which is beneficial to the subsequent stretching process. At this time, the torque value of the stretching roller at the exit is also within a fixed range. When the controlled device is accelerated, the distance the substrate passes through the infrared heating device remains unchanged, but the heating time is reduced, and the heat received by the substrate will also be reduced accordingly, resulting in the substrate not being heated enough to enter a high elastic state. Because the substrate is too hard, the actual value of the torque will increase. Therefore, when accelerating, it is necessary to add a target compensation temperature value to the current set temperature to determine the target temperature value, and then control the heating device of the controlled device to reach the required heating temperature (target temperature) of the substrate within a certain period of time, and enter a high elastic state, which is convenient for subsequent stretching processing.

[0090] Similarly, when the controlled device slows down, the distance that the substrate passes through the infrared heating device remains unchanged, but the heating time increases, and the heat received by the substrate will also increase accordingly, causing the substrate to become too soft due to excessive heat and unable to enter the high elastic state. Therefore, when decelerating, it is necessary to subtract the target compensation temperature value from the current set temperature to determine the target temperature value, and then control the heating device of the controlled device to reach the required heating temperature (target temperature) of the substrate within a certain period of time, so as to enter the high elastic state and facilitate subsequent stretching processing.

[0091] Through this scheme, the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device and the current temperature value of the heating device are obtained; according to the target torque value and the current torque value, the torque difference ratio is obtained; according to the torque difference ratio and the initial compensation temperature value, the target compensation temperature value is determined; according to the current temperature value and the target compensation temperature value, the target temperature value is determined; according to the current temperature value and the target temperature value, the heating device is controlled to heat to the target temperature within a preset time period. The problem of insufficient or excessive infrared heating before stretching during acceleration and deceleration of the double-drawing device can be solved, and the cumbersome operation that traditional production personnel need to use experience to repeatedly adjust can be solved. The required data (target torque value, current torque value, initial compensation temperature value and current temperature value) can be collected in real time through the communication of the controlled device, and the accurate equipment operation data can be used as an adjustment reference to eliminate the hysteresis and high error rate caused by traditional manual adjustment, which can better ensure the product yield, improve the degree of automation of the equipment, and correspondingly reduce the number of personnel and workload. The temperature control method proposed in the present invention has a significant effect in operation and economy.

[0092] In an optional embodiment, in order to obtain the operating status of the device in a timely manner, a preset trigger condition may be set, and before obtaining the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device, and the current temperature value of the heating device, the method further includes:

[0093] Monitoring a preset trigger condition, wherein the preset trigger condition includes detecting an operating speed of the controlled device;

[0094] When the running speed is in a uniform state before the current moment and the speed changes at the current moment, the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device and the current temperature value of the heating device are obtained.

[0095] Specifically, when the running speed of the controlled device changes from a uniform speed state to a non-uniform speed state, calculation-related parameters are obtained, including the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device, and the current temperature value of the heating device.

[0096] In this way, relevant data can be obtained in time when the equipment speed changes, thereby ensuring the real-time nature of temperature control.

[0097] In an optional embodiment, in order to avoid insufficient or unstable heating of the substrate caused by excessive temperature changes, a range of compensation temperature values ​​may be set, and the method further includes:

[0098] When the target compensation temperature value is less than the minimum compensation temperature value of the preset compensation temperature value range, the minimum compensation temperature value is used as the target compensation temperature value;

[0099] or,

[0100] When the target compensation temperature value is greater than the maximum compensation temperature value of the preset compensation temperature value range, the maximum compensation temperature value is used as the target compensation temperature value.

[0101] Specifically, in an optional example, the range of the compensation temperature value can be set to -10 degrees Celsius to 10 degrees Celsius. If the calculated target compensation temperature value is -12 degrees Celsius, because -12 degrees Celsius is smaller than the minimum value of the set compensation temperature value, -10 degrees Celsius is used as the target compensation temperature value. Similarly, if the calculated target compensation temperature value is 12 degrees Celsius, because 12 degrees Celsius is greater than the maximum value of the set compensation temperature value, 10 degrees Celsius is used as the target compensation temperature value.

[0102] Furthermore, the range of the target temperature value may be set according to the characteristics of the substrate to avoid unnecessary substrate loss due to inconsistency between the acquired temperature data and the actual temperature that the substrate can withstand due to equipment failure.

[0103] Optionally, when the target temperature value is less than the minimum target temperature value of the preset target temperature value range, the minimum target temperature value is used as the target temperature value;

[0104] or,

[0105] When the target temperature value is greater than the maximum target temperature value of the preset target temperature value range, the maximum target temperature value is used as the target temperature value.

[0106] The specific implementation process is similar to the implementation method of the compensation temperature value when setting the compensation temperature value range, and will not be described in detail here.

[0107] The purpose of setting the compensation temperature range and the target temperature range is to avoid unnecessary substrate loss caused by rapid temperature changes or data collection errors due to equipment failure. Of course, if it is really necessary to change the temperature over a large range, you can also repeat the operation multiple times to reach the target temperature value. This can make the temperature transition relatively smooth, which also plays a good protective role on the equipment components and helps to extend the life of the equipment.

[0108] In an optional embodiment, according to the current temperature value and the target temperature value, the heating device is controlled to heat to the target temperature within a preset time period, including: Figure 3 The method steps shown:

[0109] Step 310, determining a temperature adjustment ratio according to the current temperature value and the target temperature value.

[0110] Step 320, determining the temperature adjustment speed according to the preset time period and the temperature adjustment ratio.

[0111] Step 330, adjusting the speed according to the temperature to control the heating device to heat to the target temperature.

[0112] Specifically, the temperature adjustment ratio can be determined by the following formula:

[0113] K=(T g -T a ) / T a (Formula 6)

[0114] Where K is the temperature adjustment ratio, T g is the target temperature value, T a is the current temperature value.

[0115] Set the preset time period to S, and the temperature adjustment speed V is as follows:

[0116] V=K / S (Formula 7)

[0117] V is the temperature adjustment speed, which is the percentage of temperature increase or decrease per unit time.

[0118] In this way, the heating device of the controlled device can be controlled to heat the device to the target temperature at a uniform speed.

[0119] Optionally, the heating method of the heating device is infrared heating.

[0120] For example, infrared heating devices such as infrared heating tubes.

[0121] In order to make the method flow of the present invention clearer, the present invention also provides a specific implementation flow chart, such as Figure 4The figure shows a temperature control method process of a film longitudinal stretching machine. First, the torque target value and the actual value of the torque of the stretching roller are used to determine the torque deviation ratio through PID control, and the compensation temperature value range is set. According to the compensation temperature value range and the current temperature value, that is, the infrared heating preset value, the final target temperature value is determined according to the set target temperature value range, and then according to the target temperature value and the current temperature value, the infrared heating output percentage, that is, the speed of temperature adjustment, is determined.

[0122] The above is an embodiment of the temperature control method provided in the present application. The following is an introduction to other embodiments provided in the present application. Please refer to the following for details.

[0123] Figure 5 A temperature control device provided in an embodiment of the present invention comprises:

[0124] Acquisition module 501, processing module 502, determination module 503 and control module 504;

[0125] An acquisition module 501 is used to acquire a target torque value of the stretching roller, a current torque value of the stretching roller, an initial compensation temperature value of the heating device, and a current temperature value of the heating device;

[0126] A processing module 502 is used to obtain a torque difference ratio according to the target torque value and the current torque value;

[0127] A determination module 503 is used to determine a target compensation temperature value according to the torque difference ratio and the initial compensation temperature value; and to determine a target temperature value according to the current temperature value and the target compensation temperature value;

[0128] The control module 504 is used to control the heating device to heat to the target temperature within a preset time period according to the current temperature value and the target temperature value.

[0129] Optionally, the device further includes: a monitoring module 505;

[0130] A monitoring module 505, configured to monitor a preset trigger condition, wherein the preset trigger condition includes detecting the operating speed of the controlled device;

[0131] The acquisition module 501 is used to start acquiring the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device and the current temperature value of the heating device when the running speed is in a uniform state before the current moment and the speed changes at the current moment.

[0132] Optionally, the device further includes: an input module 506;

[0133] The input module 506 is used to input the target torque value and the current torque value into a proportional integral differential control system PID to obtain the torque difference ratio.

[0134] Optionally, the device comprises:

[0135] The processing module 502 is also used to use the minimum compensation temperature value as the target compensation temperature value when the target compensation temperature value is less than the minimum compensation temperature value of the preset compensation temperature value range; or, when the target compensation temperature value is greater than the maximum compensation temperature value of the preset compensation temperature value range, use the maximum compensation temperature value as the target compensation temperature value.

[0136] Optionally, the device comprises:

[0137] The processing module 502 is also used to use the minimum target temperature value as the target temperature value when the target temperature value is less than the minimum target temperature value of the preset target temperature value range; or, when the target temperature value is greater than the maximum target temperature value of the preset target temperature value range, use the maximum target temperature value as the target temperature value.

[0138] Optionally, the device comprises:

[0139] The determination module 503 is further used to determine the temperature adjustment ratio according to the current temperature value and the target temperature value; and determine the temperature adjustment speed according to the preset time period and the temperature adjustment ratio;

[0140] The control module 504 is specifically configured to control the heating device to heat to the target temperature according to the temperature adjustment speed.

[0141] Optionally, the heating method of the heating device in the control module 504 is infrared heating.

[0142] The functions performed by the various components in the temperature control device provided in the embodiment of the present invention have been described in detail in any of the above method embodiments, and will not be repeated here.

[0143] A temperature control device provided in an embodiment of the present invention obtains a target torque value of a stretching roller, a current torque value of a stretching roller, an initial compensation temperature value of a heating device, and a current temperature value of the heating device; obtains a torque difference ratio according to the target torque value and the current torque value; determines a target compensation temperature value according to the torque difference ratio and the initial compensation temperature value; determines a target temperature value according to the current temperature value and the target compensation temperature value; and controls the heating device to heat to the target temperature within a preset time period according to the current temperature value and the target temperature value. The problem of insufficient or excessive infrared heating before stretching during acceleration and deceleration of a double-drawing device can be solved, and the cumbersome operation that traditional production personnel need to use experience to repeatedly adjust can be solved. The required data (target torque value, current torque value, initial compensation temperature value, and current temperature value) can be collected in real time through the communication of the controlled device, and accurate equipment operation data can be used as an adjustment reference to eliminate the hysteresis and high error rate caused by traditional manual adjustment, which can better ensure the product yield, improve the degree of automation of the equipment, and correspondingly reduce the number of personnel and workload. The temperature control method proposed in the present invention has a significant effect in operation and economy.

[0144] like Figure 6 As shown, an embodiment of the present application provides a temperature control system, including a controller 10 and a controlled device 20, wherein the controlled device includes a heating device 201 and a stretching roller 202, and the controller 10 is in communication connection with the controlled device 20;

[0145] The controller 10 is used to implement the steps of the temperature control method provided by any of the aforementioned method embodiments.

[0146] Temperature Control The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a controller, the steps of the temperature control method provided in any of the aforementioned method embodiments are implemented.

[0147] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0148] The above is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A temperature control method, characterized in that: The method is applied to a temperature control system, the system includes a controller and a controlled device, the controlled device includes a heating device and a stretching roller, the method is executed by the controller, and the method includes: Acquire a target torque value of the stretching roller, a current torque value of the stretching roller, an initial compensation temperature value of the heating device, and a current temperature value of the heating device; Obtaining a torque difference ratio according to the target torque value and the current torque value; Determining a target compensation temperature value according to the torque difference ratio and the initial compensation temperature value; Determining a target temperature value according to the current temperature value and the target compensation temperature value; According to the current temperature value and the target temperature value, the heating device is controlled to heat to the target temperature within a preset time period.

2. The method according to claim 1, characterized in that Before acquiring the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device, and the current temperature value of the heating device, the method further includes: Monitoring a preset trigger condition, wherein the preset trigger condition includes detecting an operating speed of the controlled device; When the running speed is in a uniform state before the current moment and the speed changes at the current moment, the target torque value of the stretching roller, the current torque value of the stretching roller, the initial compensation temperature value of the heating device and the current temperature value of the heating device are obtained.

3. The method according to claim 1 or 2, characterized in that: The determining of the torque difference ratio according to the target torque value and the current torque value specifically includes: The target torque value and the current torque value are input into a proportional integral differential control system PID to obtain the torque difference ratio.

4. The method according to claim 3, characterized in that The method further comprises: When the target compensation temperature value is less than the minimum compensation temperature value of the preset compensation temperature value range, the minimum compensation temperature value is used as the target compensation temperature value; or, When the target compensation temperature value is greater than the maximum compensation temperature value of the preset compensation temperature value range, the maximum compensation temperature value is used as the target compensation temperature value.

5. The method according to claim 3, characterized in that: The method further comprises: When the target temperature value is less than the minimum target temperature value of the preset target temperature value range, the minimum target temperature value is used as the target temperature value; or, When the target temperature value is greater than the maximum target temperature value of the preset target temperature value range, the maximum target temperature value is used as the target temperature value.

6. The method according to claim 1, characterized in that The step of controlling the heating device to heat to the target temperature within a preset time period according to the current temperature value and the target temperature value comprises: Determining a temperature adjustment ratio according to the current temperature value and the target temperature value; Determining a temperature adjustment speed according to the preset time period and the temperature adjustment ratio; The heating device is controlled to heat to the target temperature according to the temperature adjustment speed.

7. The method according to any one of claims 1-2 or 4-6, characterized in that: The method further comprises: The heating method of the heating device is infrared heating.

8. A temperature control device, characterized in that: The device comprises: An acquisition module, used for acquiring a target torque value of the stretching roller, a current torque value of the stretching roller, an initial compensation temperature value of the heating device, and a current temperature value of the heating device; A processing module, configured to obtain a torque difference ratio according to the target torque value and the current torque value; A determination module, configured to determine a target compensation temperature value according to the torque difference ratio and the initial compensation temperature value; and determine a target temperature value according to the current temperature value and the target compensation temperature value; The control module is used to control the heating device to heat to the target temperature within a preset time period according to the current temperature value and the target temperature value.

9. A temperature control system, comprising a controller and a controlled device, wherein the controlled device comprises a heating device and a stretching roller, and the controller is in communication connection with the controlled device; The controller is used to implement the steps of the temperature control method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the controller, the steps of the temperature control method according to any one of claims 1 to 7 are implemented.

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