Roller speed control method, device, medium and electronic equipment

Abstract

The application relates to the hot rolling plate strip rolling technical field and discloses a roller way speed control method, device, medium and electronic equipment.The method comprises the following steps: acquiring motor torque values of each pinch roll in a roller way; selecting the minimum motor torque value as a reference motor torque value according to the motor torque values of each pinch roll; and synchronously accelerating / slowing down each pinch roll in the roller way and each roller according to the reference motor torque value.The method provided by the application can improve the synchronism of the speeds of each pinch roll and each roller, that is, the synchronism of the roller way and the rolling steel plate speed in the rolling process, so that the problems of slippage, scratching and scratching of the rolling steel plate caused by the mismatch between the roller way and the rolling steel plate speed are prevented.

Description

Technical Field

[0001] This application relates to the field of hot-rolled strip rolling technology, and in particular to a roller speed control method, device, medium, and electronic equipment. Background Technology

[0002] In existing hot-rolled strip rolling processes, issues such as the roll gap of the rolling mill, the temperature of the hot-rolled steel plate, and the wear and tear of the rollers can cause a lag in the collected speed data of various roller motors, resulting in a mismatch with the preset target speed. These roller motors include pinch rolls and roller table rolls. Errors in the collected speed data of these roller motors can lead to a mismatch between the roller table speed and the rolled steel plate speed, causing problems such as slippage, scraping, and scratches on the rolled steel plate. Summary of the Invention

[0003] This application provides a roller speed control method, device, medium, and electronic equipment, which can synchronously increase / decrease the speed of each pinch roll and each roller in the roller table by using a reference motor torque value, so as to improve the synchronization between the speed of the roller table and the speed of the rolled steel plate during the rolling process.

[0004] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0005] According to one aspect of the embodiments of this application, a roller conveyor speed control method is provided, wherein a plurality of pinch rollers and a plurality of conveyor rollers are arranged in the roller conveyor, the method comprising:

[0006] Obtain the motor torque value of each of the pinch rollers in the roller conveyor;

[0007] The minimum motor torque value among the motor torque values ​​of each of the pinch rollers is selected as the reference motor torque value.

[0008] Based on the reference motor torque value, the speed of each pinch roller and each roller in the roller conveyor is synchronously increased / decreased.

[0009] In one embodiment of this application, based on the foregoing scheme, the synchronous speed increase / decrease of each of the pinch rollers and each of the roller conveyor rollers within the roller conveyor based on the reference motor torque value includes:

[0010] If the reference motor torque value is lower than a preset first threshold, the speed of each pinch roller and each roller in the roller conveyor is synchronously increased based on a preset speed increase range.

[0011] If the reference motor torque value is higher than the preset second threshold, the speed of each pinch roller and each roller in the roller conveyor is synchronously reduced based on the preset speed reduction range.

[0012] Wherein, the second threshold is greater than the first threshold.

[0013] In one embodiment of this application, based on the foregoing scheme, the synchronous speed increase of each pinch roller and each roller conveyor within the roller conveyor based on a preset speed increase range includes:

[0014] Obtain the preset acceleration ratio;

[0015] Based on the preset speed increase ratio, the speed of each pinch roller and each roller in the roller conveyor is increased synchronously.

[0016] If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed increase range, the speed increase of each pinch roller and each roller in the roller table shall be stopped.

[0017] In one embodiment of this application, based on the foregoing scheme, the synchronous speed reduction of each pinch roller and each roller within the roller conveyor based on a preset speed reduction range includes:

[0018] Obtain the preset reduction ratio;

[0019] Based on the preset reduction ratio, the speed of each pinch roller and each roller in the roller conveyor is reduced synchronously.

[0020] If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed reduction range, the speed reduction of each pinch roller and each roller in the roller table shall be stopped.

[0021] In one embodiment of this application, based on the foregoing scheme, the method further includes:

[0022] If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed increase range, a prompt message to stop synchronous speed increase is sent to the terminal.

[0023] If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed reduction range, a prompt message to stop synchronous speed reduction is sent to the terminal.

[0024] In one embodiment of this application, based on the foregoing scheme, the method further includes:

[0025] A speed limit value is set for each of the pinch rollers and each of the roller conveyor rollers in the roller conveyor;

[0026] Speed ​​control is performed on each of the pinch rollers and each of the roller conveyor rollers based on the speed limit value.

[0027] In one embodiment of this application, based on the foregoing scheme, the speed limit value includes a maximum speed limit value and a minimum speed limit value, and the speed control of each pinch roller and each roller conveyor roller based on the speed limit value includes:

[0028] If the speed value of the pinch roller is higher than the maximum speed limit value corresponding to the pinch roller, the speed of the pinch roller is reduced so that the speed of the pinch roller is within the preset speed range;

[0029] If the speed value of the pinch roller is lower than the minimum speed limit value corresponding to the pinch roller, the speed of the pinch roller is increased so that the speed of the pinch roller is within the preset speed range;

[0030] If the speed of the roller is higher than the maximum speed limit corresponding to the roller, the speed of the roller is reduced so that the speed of the roller is within a preset speed range;

[0031] If the speed of the roller is lower than the minimum speed limit corresponding to the roller, the speed of the roller is increased so that the speed of the roller is within a preset speed range.

[0032] According to one aspect of the present application, a roller conveyor speed control device is provided. The device includes an acquisition unit for acquiring motor torque values ​​of each pinch roller in the roller conveyor; a selection unit for selecting the minimum motor torque value among the motor torque values ​​of each pinch roller as a reference motor torque value; and a speed adjustment unit for synchronously increasing / decreasing the speed of each pinch roller and each roller conveyor roller in the roller conveyor based on the reference motor torque value.

[0033] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided having a computer program stored thereon, the computer program including executable instructions that, when executed by a processor, implement the roller conveyor speed control method as described in the above embodiments.

[0034] According to one aspect of the embodiments of this application, an electronic device is provided, including: one or more processors; and a memory for storing executable instructions of the processors, which, when executed by the one or more processors, cause the one or more processors to implement the roller conveyor speed control method as described in the above embodiments.

[0035] In the technical solution of this application embodiment, the motor torque value of the pinch roll can be obtained, and the smallest motor torque value can be selected as the reference motor torque value. Then, the speed of each pinch roll and each roller in the roller table can be synchronously increased / decreased using the reference motor torque value. This improves the synchronicity of the speed of each pinch roll and each roller table, that is, improves the synchronicity of the speed of the roller table and the rolled steel plate during the rolling process, thereby preventing slippage, scraping, and scratches on the rolled steel plate caused by the mismatch between the speed of the roller table and the rolled steel plate.

[0036] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0038] Figure 1 This is a flowchart illustrating a roller conveyor speed control method according to an embodiment of this application;

[0039] Figure 2 This is a flowchart illustrating the synchronous speed increase / deceleration of each pinch roller and each roller in the roller conveyor based on the reference motor torque value, according to an embodiment of this application.

[0040] Figure 3 This is a block diagram of a roller conveyor speed control device according to an embodiment of this application;

[0041] Figure 4 This is a schematic diagram of the system structure of an electronic device according to an embodiment of this application;

[0042] Figure 5 This is a schematic diagram of the structure of a rolling mill according to an embodiment of this application.

[0043] Attached Figure Captions

[0044] 1. Roller mill before roller table; 2. Roller mill after roller table; 3. First pinch roll; 4. First roller table roll; 5. Second roller table roll; 6. Second pinch roll; 7. Third roller table roll; 8. Fourth roller table roll; 9. Third pinch roll; 10. Hot-rolled steel plate; 11. Frequency converter for the roller mill before roller table; 12. Frequency converter for the first pinch roll; 13. Frequency converter for the first pinch roll; 14. Frequency converter for the second pinch roll; 15. Frequency converter for the third pinch roll; 16. Frequency converter for the roller mill after roller table; 17. Upper control module; 18. Detailed Implementation

[0045] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0046] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0047] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller node devices.

[0048] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0049] It should be noted that "multiple" in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0050] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0051] First, it should be noted that the roller speed control scheme proposed in this application can be applied to the relevant technical field of hot-rolled strip rolling. By obtaining the motor torque values ​​of the pinch rolls and selecting the minimum motor torque value as the reference motor torque value, the speed of each pinch roll and each roller in the roller table can be synchronously increased / decreased using the reference motor torque value. This improves the speed synchronization of each pinch roll and each roller, thus improving the synchronization between the roller table and the rolled steel plate speed during the rolling process, and preventing slippage, scraping, and scratches on the rolled steel plate caused by speed mismatch between the roller table and the rolled steel plate.

[0052] According to one aspect of this application, a roller conveyor speed control method is provided. Figure 1 This is a flowchart illustrating a roller conveyor speed control method according to an embodiment of this application. Figure 5 As shown, the roller conveyor is equipped with multiple pinch rollers and multiple conveyor rollers. The roller conveyor speed control method includes at least steps 110 to 130, which are described in detail below:

[0053] In step 110, the motor torque values ​​of each of the pinch rollers in the roller conveyor are obtained.

[0054] Specifically, the pinch rollers include an upper pinch roller and a lower pinch roller, wherein each upper or lower pinch roller is driven by a separate variable frequency motor, and the speed of each variable frequency motor is regulated by a single frequency converter. By obtaining the motor torque values ​​of each pinch roller in the roller conveyor, synchronous speed regulation can be achieved by selecting the motor torque value of any pinch roller as a reference motor torque value.

[0055] Furthermore, such as Figure 5 The working principle of the rolling mill is explained in detail as shown below:

[0056] First, the upper control module 18 sends the calculated speeds of the pre-roller mill 1, post-roller mill 2, first pinch roll 3, first roller 4, second roller 5, second pinch roll 6, third roller 7, fourth roller 8, and third pinch roll 9 to the frequency converter. The frequency converter adjusts the speed to drive the variable frequency motor, providing rotational power to the mill and roller table. When the hot-rolled steel plate enters the pre-roller mill 1, the upper control module 18 collects the motor torque of the first pinch roll 3 as 6.1% of its rated torque, the motor torque of the second pinch roll 6 as 8.4% of its rated torque, and the motor torque of the third pinch roll 6 as 8.8% of its rated torque. The upper control module 18 compares the rated torques of the motors of the first pinch roll 3, the second pinch roll 6, and the third pinch roll 9, and selects the first pinch roll 3 with the smallest motor torque value as the reference control roll. When the hot-rolled steel plate enters the post-roller mill 2, the motor torque value of the first pinch roll 3 is collected. The upper control module 18 synchronously increases the speed of all roller motors in the regional roller conveyor according to the same ratio, based on 85% of the reference torque value, until the actual motor torque value of the first pinch roller 3 reaches 110% of the memory torque value and then stops increasing the speed. The upper control module 18 continuously collects the motor torque value of the first pinch roller 3. When the motor torque value of the first pinch roller 3 is 121% of the memory torque value, it synchronously reduces the speed of all roller motors in the roller conveyor until the actual motor torque value of the first pinch roller 3 is lower than 115% of the memory torque value and then stops the speed reduction control.

[0057] It should be noted that the first frequency converter 13 is used to control the speed of the first roller 4 and the second roller 5, and the second frequency converter 15 is used to control the speed of the third roller 7 and the fourth roller 8.

[0058] In step 120, the minimum motor torque value among the motor torque values ​​of each of the pinch rollers is selected as the reference motor torque value.

[0059] Specifically, the minimum motor torque value among the motor torque values ​​of each pinch roller is selected as the reference motor torque value. In other embodiments, other motor torque values ​​may be selected as the reference motor torque value, which is not limited here. In the embodiments of this application, selecting the minimum motor torque value as the reference motor torque value is to better synchronize the speed adjustment of each pinch roller and each roller in the roller table, so that the speed of the roller motor in the roller table after adjustment is more accurate. It should be noted that the roller motor includes both the pinch roller and the roller table roller.

[0060] In step 130, the speed of each pinch roller and each roller in the roller conveyor is synchronously increased / decreased based on the reference motor torque value.

[0061] In one embodiment of this application, see Figure 2Step 130 can be performed according to steps S1-S2:

[0062] Step S1: If the reference motor torque value is lower than a preset first threshold, the speed of each pinch roller and each roller in the roller conveyor is synchronously increased based on a preset speed increase range.

[0063] Step S2: If the reference motor torque value is higher than the preset second threshold, the speed of each pinch roller and each roller in the roller conveyor is synchronously reduced based on the preset speed reduction range, wherein the second threshold is greater than the first threshold.

[0064] In one embodiment of this application, the synchronous speed increase of each pinch roller and each roller conveyor roller within the roller conveyor based on a preset speed increase range includes:

[0065] Obtain the preset acceleration ratio;

[0066] Based on the preset speed increase ratio, the speed of each pinch roller and each roller in the roller conveyor is increased synchronously.

[0067] If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed increase range, the speed increase of each pinch roller and each roller in the roller table shall be stopped.

[0068] In one embodiment of this application, the synchronous speed reduction of each pinch roller and each roller conveyor roller within the roller conveyor based on a preset speed reduction range includes:

[0069] Obtain the preset reduction ratio;

[0070] Based on the preset reduction ratio, the speed of each pinch roller and each roller in the roller conveyor is reduced synchronously.

[0071] If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed reduction range, the speed reduction of each pinch roller and each roller in the roller table shall be stopped.

[0072] Specifically, both the preset first threshold and the preset second threshold can be set according to actual needs, but the preset second threshold must be greater than the preset first threshold. In the embodiments of this application, the preset first threshold can be specifically 110% of the reference motor torque value, and the preset second threshold can be specifically 120% of the reference motor torque value.

[0073] Furthermore, when the reference motor torque value is lower than 110% of the reference motor torque value, it is necessary to synchronously increase the speed of each pinch roller and each roller in the roller conveyor through a preset speed increase range in order to compensate for the speed lag and improve the accuracy of the speed of each roller motor in the roller conveyor.

[0074] Furthermore, when the reference motor torque value is higher than 120% of the reference motor torque value, it is necessary to synchronously reduce the speed of each pinch roller and each roller in the roller conveyor through a preset speed reduction range, so as to compensate for the speed lag and improve the accuracy of the speed of each roller motor in the roller conveyor.

[0075] Furthermore, the preset speed increase ratio and the preset speed decrease ratio can be set according to actual needs. In the embodiments of this application, the preset speed increase ratio can be specifically 1.5% of the original speed of the roller motor for each speed increase. The original speed of each roller motor may be different, so each roller motor increases its speed according to a 1.5% speed increase ratio.

[0076] Furthermore, the preset speed increase range is set based on the speed of each roller motor itself, and can be specifically defined as not exceeding 105% of the original speed of the roller motor. The preset speed decrease range is set based on the speed of each roller motor itself, and can be specifically defined as not less than 95% of the original speed of the roller motor.

[0077] In the embodiments of this application, the preset speed reduction ratio can be specifically defined as a reduction of 1.5% of the original speed of the roller motor each time. Since the original speed of each roller motor may be different, each roller motor increases its speed according to a 1.5% reduction ratio. When the actual operating torque of the pinch roller corresponding to the reference motor torque value is greater than 120% of the reference motor torque value, the speed of all roller motors in the roller conveyor is simultaneously reduced until the actual motor torque value of the pinch roller is lower than 115% of the reference motor torque value, at which point the speed reduction stops.

[0078] In one embodiment of this application, the method provided by this application further includes:

[0079] If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed increase range, a prompt message to stop synchronous speed increase is sent to the terminal.

[0080] If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed reduction range, a prompt message to stop synchronous speed reduction is sent to the terminal.

[0081] In the embodiments of this application, the terminal can specifically be a computer, tablet, mobile phone, or other device capable of data transmission. If the speed of the pinch roller corresponding to the reference motor torque value is detected to be outside the preset speed-up range, that is, exceeding the speed-up range during speed-up, a prompt message to stop synchronous speed-up needs to be sent to the terminal to prompt the stop of speed-up and prevent damage to the roller conveyor or inaccurate rolling due to overspeed.

[0082] If the speed of the pinch roll corresponding to the reference motor torque value is detected to be outside the preset speed reduction range, that is, exceeding the speed reduction range during speed reduction, a prompt message to stop synchronous speed reduction needs to be sent to the terminal to prompt the stop of speed reduction and prevent inaccurate rolling due to excessively low speed.

[0083] In one embodiment of this application, the method provided by this application further includes:

[0084] A speed limit value is set for each of the pinch rollers and each of the roller conveyor rollers in the roller conveyor;

[0085] Speed ​​control is performed on each of the pinch rollers and each of the roller conveyor rollers based on the speed limit value.

[0086] In one embodiment of this application, the speed limit value includes a maximum speed limit value and a minimum speed limit value, and the speed control of each pinch roll and each roller conveyor roll based on the speed limit value includes:

[0087] If the speed value of the pinch roller is higher than the maximum speed limit value corresponding to the pinch roller, the speed of the pinch roller is reduced so that the speed of the pinch roller is within the preset speed range;

[0088] If the speed value of the pinch roller is lower than the minimum speed limit value corresponding to the pinch roller, the speed of the pinch roller is increased so that the speed of the pinch roller is within the preset speed range;

[0089] If the speed of the roller is higher than the maximum speed limit corresponding to the roller, the speed of the roller is reduced so that the speed of the roller is within a preset speed range;

[0090] If the speed of the roller is lower than the minimum speed limit corresponding to the roller, the speed of the roller is increased so that the speed of the roller is within a preset speed range.

[0091] Specifically, the speed limit and the preset speed range can be set according to time requirements. In the embodiments of this application, the preset speed range is between 95% and 115% of the reference motor torque value, the maximum speed limit is 130% of the roller motor speed, and the minimum speed limit is 80% of the roller motor speed.

[0092] The speed limit value is set for each pinch roller and each roller in the roller conveyor because the speed of the roller motors in the roller conveyor may be different. The corresponding speed limit value is set based on each roller motor itself.

[0093] Figure 3 This is a block diagram of a roller conveyor speed control device 300 according to an embodiment of the present application. The roller conveyor speed control device 300 according to an embodiment of the present application includes: an acquisition unit 301, a selection unit 302, and a speed adjustment unit 303.

[0094] The acquisition unit 301 is used to acquire the motor torque value of each of the pinch rollers in the roller conveyor.

[0095] The selection unit 302 is used to select the minimum motor torque value among the motor torque values ​​of each of the pinch rollers as the reference motor torque value.

[0096] The speed control unit 303 is used to synchronously increase / decrease the speed of each pinch roller and each roller in the roller conveyor based on the reference motor torque value.

[0097] In another aspect, this application also provides a computer-readable storage medium storing a program product capable of implementing the methods provided above in this specification. In some possible implementations, various aspects of this application may also be implemented as a program product comprising program code that, when run on a terminal device, causes the terminal device to perform the steps described in the "Embodiment Methods" section of this specification according to various exemplary embodiments of this application.

[0098] The program product for implementing the above-described method according to the embodiments of this application may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of this application is not limited thereto. In this document, the readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0099] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0100] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0101] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0102] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0103] In another respect, this application also provides an electronic device capable of implementing the above-described method.

[0104] Those skilled in the art will understand that various aspects of this application can be implemented as a system, method, or program product. Therefore, various aspects of this application can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementations, collectively referred to herein as a "circuit," "module," or "system."

[0105] The following reference Figure 4 To describe an electronic device 400 according to this embodiment of the present application. Figure 4 The electronic device 400 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0106] like Figure 4 As shown, the electronic device 400 is manifested in the form of a general-purpose computing device. The components of the electronic device 400 may include, but are not limited to: at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting different system components (including storage unit 420 and processing unit 410).

[0107] The storage unit stores program code that can be executed by the processing unit 410, causing the processing unit 410 to perform the steps described in the "Embodiment Methods" section above according to various exemplary embodiments of this application.

[0108] Storage unit 420 may include a readable medium in the form of a volatile storage unit, such as random access memory (RAM) 421 and / or cache memory 422, and may further include a read-only memory (ROM) 423.

[0109] Storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0110] Bus 430 can represent one or more of several types of bus structures, including a memory cell bus or memory cell control node, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0111] Electronic device 400 can also communicate with one or more external devices 1200 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 400, and / or with any device that enables electronic device 400 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 450. Furthermore, electronic device 400 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 460. As shown, network adapter 460 communicates with other modules of electronic device 400 via bus 430. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0112] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the method according to the embodiments of this application.

[0113] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this application, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0114] It should be understood that this application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method for controlling the speed of a roller conveyor, characterized in that, The roller conveyor is equipped with multiple pinch rollers and multiple conveyor rollers. The method includes: Obtain the motor torque value of each of the pinch rollers in the roller conveyor; The minimum motor torque value among the motor torque values ​​of each of the pinch rollers is selected as the reference motor torque value. Based on the reference motor torque value, the speed of each pinch roller and each roller in the roller conveyor is synchronously increased / decreased.

2. The roller conveyor speed control method according to claim 1, characterized in that, The synchronous speed increase / decrease of each pinch roller and each roller within the roller conveyor based on the reference motor torque value includes: If the reference motor torque value is lower than a preset first threshold, the speed of each pinch roller and each roller in the roller conveyor is synchronously increased based on a preset speed increase range. If the reference motor torque value is higher than the preset second threshold, the speed of each pinch roller and each roller in the roller conveyor is synchronously reduced based on the preset speed reduction range. Wherein, the second threshold is greater than the first threshold.

3. The roller conveyor speed control method according to claim 2, characterized in that, The method of synchronously accelerating each of the pinch rollers and each of the roller conveyor rollers within the roller conveyor based on a preset acceleration range includes: Obtain the preset acceleration ratio; Based on the preset speed increase ratio, the speed of each pinch roller and each roller in the roller conveyor is increased synchronously. If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed increase range, the speed increase of each pinch roller and each roller in the roller table shall be stopped.

4. The roller conveyor speed control method according to claim 3, characterized in that, The method of synchronously reducing the speed of each pinch roller and each roller within the roller conveyor based on a preset speed reduction range includes: Obtain the preset reduction ratio; Based on the preset reduction ratio, the speed of each pinch roller and each roller in the roller conveyor is reduced synchronously. If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed reduction range, the speed reduction of each pinch roller and each roller in the roller table shall be stopped.

5. The roller conveyor speed control method according to claim 4, characterized in that, The method further includes: If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed increase range, a prompt message to stop synchronous speed increase is sent to the terminal. If the speed of the pinch roller corresponding to the reference motor torque value is not within the preset speed reduction range, a prompt message to stop synchronous speed reduction is sent to the terminal.

6. The roller conveyor speed control method according to claim 1, characterized in that, The method further includes: A speed limit value is set for each of the pinch rollers and each of the roller conveyor rollers in the roller conveyor; Speed ​​control is performed on each of the pinch rollers and each of the roller conveyor rollers based on the speed limit value.

7. The roller conveyor speed control method according to claim 6, characterized in that, The speed limit values ​​include a maximum speed limit value and a minimum speed limit value. The speed control of each pinch roller and each roller conveyor roller based on the speed limit values ​​includes: If the speed value of the pinch roller is higher than the maximum speed limit value corresponding to the pinch roller, the speed of the pinch roller is reduced so that the speed of the pinch roller is within the preset speed range; If the speed of the pinch roller is lower than the minimum speed limit corresponding to the pinch roller, the speed of the pinch roller is increased so that the speed of the pinch roller is within the preset speed range; If the speed of the roller is higher than the maximum speed limit corresponding to the roller, the speed of the roller is reduced so that the speed of the roller is within a preset speed range; If the speed of the roller is lower than the minimum speed limit corresponding to the roller, the speed of the roller is increased so that the speed of the roller is within the preset speed range.

8. A roller conveyor speed control device, characterized in that, The device includes: The acquisition unit is used to acquire the motor torque values ​​of each pinch roller in the roller conveyor. The selection unit is used to select the minimum motor torque value among the motor torque values ​​of each of the pinch rollers as the reference motor torque value; The speed control unit is used to synchronously increase / decrease the speed of each pinch roller and each roller in the roller conveyor based on the reference motor torque value.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one piece of program code, which is loaded and executed by a processor to perform the operations performed by the method as described in any one of claims 1 to 7.

10. An electronic device, characterized in that, The electronic device includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operation performed by the method as described in any one of claims 1 to 7.

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