Cloth tension control method, system and terminal, cloth paving machine integrated board and computer program product

Abstract

The invention provides a cloth tension control method, system and terminal, a cloth paving machine integrated board and a computer program product. The method comprises the following steps: acquiring a real-time state of cloth in a cloth unwinding groove to obtain a state signal of the cloth; the current rotating speed of a walking motor is obtained; based on the state signal of the cloth and the current rotating speed of the walking motor, calculating the target rotating speed of a cloth bucket motor and an uncloth motor, and generating a corresponding target rotating speed instruction; and sending the target rotating speed instruction to a corresponding driver so as to drive a cloth bucket motor and an uncloth motor to operate according to the target rotating speed. The speed and tension of the cloth in the conveying process can be accurately controlled, so that the cloth slipping phenomenon caused by the additional tension of the cloth pressing rod is avoided, and the cloth paving precision and effect are improved. Besides, the running efficiency of the machine can be effectively improved, the downtime and the maintenance cost caused by improper cloth tension control are reduced, and therefore higher production efficiency and better product quality are brought to the garment manufacturing industry.

Description

Technical Field

[0001] The present application belongs to the technical field of cloth spreading machines, and relates to a cloth tension control method, system and terminal, a cloth spreading machine integrated board and a computer program product. Background Art

[0002] A cloth spreading machine is a large machine tool used in garment production, which mainly uses a rotating blade to cut fabric. The cloth spreading machine is usually equipped with an advanced control system to ensure smooth laying and precise cutting of the fabric, thus meeting the requirements of high-quality garment production.

[0003] In the control system of the spreading machine, the photoelectric sensors in the unwinding trough play a vital role. These sensors can monitor the position and movement of the fabric in real time, and control the start and stop of the motor according to the monitored information, so as to ensure that the fabric maintains the appropriate speed and tension during the conveying process to obtain the expected spreading effect.

[0004] However, this control method works well under low-speed operation conditions, and the motor start and stop response speed can keep up with the machine movement. However, under high-speed operation conditions, due to factors such as reaction time and mechanical inertia, the motor start and stop response is difficult to keep up with the machine movement. This will cause the cloth to be fed slowly, and then the cloth pressing rod in the cloth unwinding groove will apply additional tension to the cloth. This additional tension will cause the cloth to slip on the cloth dispensing wheel, making the tension parameters set by the machine invalid, and having a huge impact on the overall spreading effect. This will not only reduce production efficiency, but may also damage the cloth or cause the quality of the finished product to decline. Summary of the invention

[0005] The purpose of the present application is to provide a cloth tension control method, system and terminal, a cloth spreading machine integrated board and a computer program product, which are used to solve the technical problem that the prior art cannot accurately control the cloth feeding speed under high-speed operation conditions, resulting in poor cloth spreading effect due to additional tension on the cloth.

[0006] In a first aspect, the present application provides a method for controlling fabric tension, comprising: obtaining the real-time state of the fabric inside a fabric unwinding slot to obtain a state signal of the fabric; obtaining the current speed of a travel motor; based on the state signal of the fabric and the current speed of the travel motor, calculating the target speeds of a fabric bucket motor and a fabric unwinding motor, and generating a corresponding target speed instruction; the target speeds of the fabric bucket motor and the fabric unwinding motor are consistent; and sending the target speed instruction to a corresponding driver to drive the fabric bucket motor and the fabric unwinding motor to operate at the target speed.

[0007] In an implementation of the first aspect, based on the cloth state signal and the current rotation speed of the travel motor, calculating the target rotation speeds of the cloth bucket motor and the cloth unwinding motor includes:

[0008] Based on the current speed of the travel motor, the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor are calculated by a pre-established linear regression model; the linear regression model is obtained by curve fitting the speed data of the travel motor, the cloth bucket motor or the cloth unwinding motor under different working conditions;

[0009] Based on the cloth state signal, adjusting the speed compensation value of the cloth bucket motor and the cloth unwinding motor; the cloth state signal includes a cloth state, a cloth-free state, switching from a cloth-free state to a cloth-free state, and switching from a cloth-free state to a cloth-existing state; the initial value of the speed compensation value is zero;

[0010] Superimposing the basic speed value and the speed compensation value to obtain a superimposed speed value;

[0011] Based on the superimposed speed value, the target rotation speeds of the cloth bucket motor and the cloth unwinding motor are determined.

[0012] In an implementation of the first aspect, determining the target rotational speeds of the cloth bucket motor and the cloth unwinding motor based on the superimposed speed value includes:

[0013] Determining whether the stacking velocity value is greater than a first preset threshold and less than a second preset threshold;

[0014] If yes, the superimposed speed value is used as the target speed of the cloth bucket motor and the cloth unwinding motor;

[0015] Otherwise, determining whether the stacking velocity value is less than or equal to the first preset threshold;

[0016] If yes, the first preset threshold is used as the target rotation speed of the cloth bucket motor and the cloth unwinding motor;

[0017] Otherwise, the second preset threshold is used as the target rotation speed of the cloth bucket motor and the cloth unwinding motor.

[0018] In an implementation of the first aspect, adjusting the speed compensation values ​​of the cloth bucket motor and the cloth unwinding motor based on the cloth state signal includes:

[0019] If the cloth state signal is the cloth-existing state, a preset fixed amount is subtracted from the speed compensation value adjusted last time to obtain the speed compensation value adjusted currently;

[0020] If the cloth state signal is the cloth-free state, a preset fixed amount is added to the speed compensation value adjusted last time to obtain the speed compensation value adjusted currently;

[0021] If the cloth state signal is the state of switching from no cloth to cloth state, firstly clear the speed compensation value adjusted last time, and then subtract a preset fixed amount to obtain the speed compensation value adjusted currently;

[0022] If the cloth state signal is the state of switching from cloth-with state to cloth-without state, the speed compensation value adjusted last time is first cleared to zero, and then a preset fixed amount is added to obtain the speed compensation value adjusted this time.

[0023] In an implementation of the first aspect, based on the current rotational speed of the walking motor, the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor are calculated through a pre-established linear regression model, including taking the current rotational speed of the walking motor as input and substituting it into the linear regression model to output the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor.

[0024] In an implementation of the first aspect, the linear regression model is a linear equation model; the formula corresponding to the linear equation model is:

[0025] Vh=Vw×k+b;

[0026] Wherein Vh represents the basic speed value of the cloth bucket motor and the cloth unwinding motor;

[0027] Vw represents the current speed of the travel motor;

[0028] k represents the slope;

[0029] b represents the intercept.

[0030] In the second aspect, the present application provides an integrated board of a spreading machine, comprising: a state acquisition module, used to acquire the real-time state of the cloth inside the unwinding groove, and obtain a state signal of the cloth; a speed acquisition module, used to acquire the current speed of the walking motor; a speed calculation module, used to calculate the target speeds of the cloth bucket motor and the unwinding motor based on the state signal of the cloth and the current speed of the walking motor, and generate a corresponding target speed instruction; the target speeds of the cloth bucket motor and the unwinding motor are consistent; a speed transmission module, used to send the target speed instruction to the corresponding driver, so as to drive the cloth bucket motor and the unwinding motor to operate at the target speed.

[0031] In the third aspect, the present application provides a fabric tension control system, comprising: a spreading machine integrated board as described above; a fabric unwinding sensor for monitoring the real-time status of the fabric inside the unwinding groove; a travel motor driver for receiving a target travel speed instruction sent by the spreading machine integrated board, and generating a first drive instruction based on the travel speed instruction; a travel motor for operating at the target travel speed under the drive of the first drive instruction; an encoder for measuring the current speed of the travel motor; a cloth bucket motor and a cloth unwinding motor driver for receiving a target speed instruction sent by the spreading machine integrated board, and generating a second drive instruction based on the target speed instruction; a cloth bucket motor and a cloth unwinding motor for operating at the target speed under the drive of the second drive instruction.

[0032] In a fourth aspect, the present application provides a fabric tension control terminal, comprising: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory, so that the terminal executes any of the methods described above.

[0033] In a fifth aspect, the present application provides a computer program product, comprising computer instructions, which implement the above-described method when executed by a processor.

[0034] As described above, the cloth tension control method, system and terminal, cloth laying machine integrated board and computer program product described in the present application have the following beneficial effects:

[0035] (1) By precisely controlling the speed of the cloth bucket motor and the cloth unwinding motor, the speed and tension of the cloth during conveying can be effectively controlled, thereby avoiding the cloth slipping caused by the extra tension of the cloth pressing rod in the cloth unwinding groove, and improving the cloth spreading accuracy and effect;

[0036] (2) It has a high-precision speed synchronization mechanism and real-time feedback adjustment capability to maintain stability and accuracy under high-speed operating conditions;

[0037] (3) It can effectively improve the operating efficiency of the machine and reduce the downtime and maintenance costs caused by improper fabric tension control, thereby bringing higher production efficiency and better product quality to the garment manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Shown is a flow chart of a mobile terminal described in the present application in one embodiment.

[0039] Figure 2 Shown is a flow chart of an embodiment of the cloth tension control method described in the present application.

[0040] Figure 3Shown is a flow chart of another embodiment of the cloth tension control method described in the present application.

[0041] Figure 4 Shown is a schematic diagram of the structure of the cloth spreading machine integrated board described in the present application in one embodiment.

[0042] Figure 5 Shown is a schematic structural diagram of a cloth tension control system described in the present application in one embodiment.

[0043] Figure 6 Shown is a structural schematic diagram of a cloth tension control terminal described in the present application in one embodiment. DETAILED DESCRIPTION

[0044] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0045] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0046] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] The following embodiments of the present application provide a fabric tension control method, system and terminal, a cloth spreading machine integrated board and a computer program product. The fabric tension control method described in the present application is applicable to cloth spreading machine equipment, especially for the scenario where the cloth spreading machine conveys cloth under high-speed operation conditions. The present application can accurately control the speed and tension during the cloth conveying process by controlling the speed of the cloth bucket motor and the cloth unwinding motor, thereby avoiding the cloth slippage caused by the additional tension of the cloth pressing rod in the cloth unwinding groove, thereby improving the cloth spreading accuracy and effect. The present application has a high-precision speed synchronization mechanism and real-time feedback adjustment capabilities, and maintains stability and accuracy under high-speed operation conditions. In addition, the present application can also effectively improve the operating efficiency of the machine, reduce downtime and maintenance costs caused by improper fabric tension control, thereby bringing higher production efficiency and better product quality to the garment manufacturing industry.

[0048] See also Figure 1 As shown, the cloth tension control method provided in the embodiment of the present application can be run in a mobile terminal, a computer terminal or the like. Taking running on the mobile terminal as an example, Figure 1 is a hardware structure block diagram of the mobile terminal. Figure 1 As shown, the mobile terminal may include: a processor and a memory, the processor may be a central processing unit, and the memory is used to store data. Figure 1 The mobile terminal in the figure is only used as an example and does not limit the specific structure of the mobile terminal.

[0049] Optionally, the mobile terminal may further include: a communication transmission device and an input and output device.

[0050] Optionally, the memory may be used to store computer programs, such as software programs and modules of application software, and the memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include a memory remotely arranged relative to the processor, and these remote memories may be connected to the mobile terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0051] Optionally, the communication transmission device can be used to receive or send data via a network, which may include a wireless network provided by a communication provider of the mobile terminal. The communication transmission device may include a NIC (Network Interface Controller) that can be connected to other network devices through a base station so as to communicate with the Internet.

[0052] The technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application.

[0053] See also Figure 2 , which is a flow chart of a method for controlling the tension of a cloth according to an embodiment of the present application. Figure 2 As shown, the embodiment of the present application provides a method for controlling cloth tension including the following steps S100 to S400.

[0054] In step S100, the real-time state of the cloth in the unwinding tank is acquired to obtain a state signal of the cloth.

[0055] The fabric unwinding sensor is a sensing device used to monitor the state of the fabric inside the fabric unwinding tank. The fabric unwinding sensor is of various types, including photoelectric sensors, ultrasonic sensors, pressure sensors, infrared sensors, etc. Each type of sensor has its own unique working principle and scope of application, and can be flexibly selected or used in combination according to actual needs.

[0056] According to the different shapes and sizes of untangling grooves and the various positions that the cloth may occupy therein, the layout of the untangling sensor can be reasonably planned to achieve the best monitoring effect. In addition, effective measures can be taken to ensure that the untangling sensor can be firmly attached to the untangling groove, such as using auxiliary tools such as brackets and clamps to achieve the smooth and reliable operation of the untangling sensor.

[0057] The cloth state signal includes a cloth-present state, a cloth-absent state, a state switching from a cloth-present state to a cloth-absent state, and a state switching from a cloth-absent state to a cloth-present state.

[0058] Specifically, when the cloth unraveling sensor continuously detects the presence of cloth in the cloth unraveling slot within a preset time period, a cloth-existing state signal will be generated. Similarly, when the cloth unraveling sensor continuously detects the absence of cloth in the cloth unraveling slot within a preset time period, a cloth-nothing state signal will be generated. During the production process, as cloth is continuously consumed or replenished, the cloth unraveling sensor can sensitively capture this change process and update its state signal in a timely manner, that is, to achieve a state transition from cloth to no cloth or from no cloth to cloth.

[0059] In step S200, the current rotation speed of the travel motor is obtained.

[0060] The travel motor is mainly used to drive the machine to move on the workbench.

[0061] In one embodiment of the present application, the current rotation speed of the walking motor can be determined according to the walking speed instruction issued by the system to the walking motor driver. The walking speed instruction is designed to guide the walking motor to run stably at a specific target walking speed. The current rotation speed of the walking motor is consistent with the target walking speed, and both are constant values.

[0062] In another embodiment of the present application, an encoder is used to measure the current speed of the travel motor. As a precision device, the encoder can convert the physical position of the rotating part into a digital signal, thereby realizing accurate monitoring of the speed and angle.

[0063] Specifically, the encoder is installed on the output shaft of the travel motor and is rigidly coaxially connected to the output shaft. This installation method ensures that the installation direction of the encoder is consistent with the rotation direction of the output shaft, so that the encoder can directly and accurately measure the rotation angle and speed of the output shaft. Such a configuration can provide the most accurate feedback information for this application and help to achieve precise control of the travel motor speed.

[0064] The operation process of the walking motor can be divided into three stages: acceleration, deceleration and uniform speed. Theoretically, in the uniform speed stage, the walking motor should maintain a constant speed. However, in actual operation, due to factors such as load changes and power supply fluctuations, the actual speed of the walking motor tends to fluctuate within a very small range. In order to simplify the analysis process, this application approximates the speed of the walking motor in the uniform speed stage as a fixed value. As for the acceleration or deceleration stage, the real-time data recorded by the encoder is used to reflect the corresponding acceleration curve and deceleration trend.

[0065] In step S300, based on the cloth state signal and the current rotation speed of the travel motor, the target rotation speeds of the cloth bucket motor and the cloth unwinding motor are calculated, and a corresponding target rotation speed instruction is generated.

[0066] The cloth bucket is usually used to store the cloth to be processed or being processed. The cloth bucket motor drives the transmission device connected to the cloth bucket to transport the cloth from the cloth bucket to the working area at a specific speed and appropriate tension. In addition, the cloth bucket motor also has the ability to adjust the forward and backward movement and lifting and lowering of the cloth, which helps to achieve precise positioning and instant adjustment of the cloth.

[0067] The unwinding motor is responsible for managing the process of unfolding and releasing the fabric. Usually, the unwinding motor is directly connected to the fabric winding shaft or roller, and realizes the smooth spreading of the fabric by causing the latter to rotate. In this process, the unwinding motor finely controls the speed and torque to ensure that the fabric can maintain the ideal stretching state when it is extended, thereby effectively avoiding problems such as wrinkles and knots, thereby improving the efficiency of the entire laying process and the quality standards of the final product.

[0068] In one embodiment of the present application, based on the cloth state signal and the current rotation speed of the travel motor, calculating the target rotation speeds of the cloth bucket motor and the cloth unwinding motor includes the following steps S301 to S304.

[0069] In step S301, based on the current rotation speed of the travel motor, the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor are calculated by a pre-established linear regression model.

[0070] In one embodiment of the present application, based on the current rotational speed of the walking motor, the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor are calculated through a pre-established linear regression model, including taking the current rotational speed of the walking motor as input and substituting it into the linear regression model to output the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor.

[0071] In one embodiment of the present application, the linear regression model is obtained by performing curve fitting on the speed data of the travel motor, the cloth bucket motor or the cloth unwinding motor under different working conditions.

[0072] In one embodiment of the present application, the linear regression model is a linear equation model. The formula corresponding to the linear equation model is:

[0073] Vh=Vw×k+b;

[0074] Wherein Vh represents the basic speed value of the cloth bucket motor and the cloth unwinding motor; Vw represents the current speed of the walking motor; k represents the slope; and b represents the intercept.

[0075] When processing different types of fabrics, the basic speed value calculated based on the current speed of the travel motor may be too large or too small. Therefore, it is necessary to compensate the basic speed value appropriately. In this way, it can better adapt to the processing needs of fabrics with different characteristics, thereby ensuring the smooth progress of the entire production process and the high quality standards of the final product.

[0076] In step S302, based on the cloth state signal, the speed compensation values ​​of the cloth bucket motor and the cloth unwinding motor are adjusted. The initial value of the speed compensation value is zero.

[0077] In one embodiment of the present application, based on the cloth state signal, adjusting the speed compensation values ​​of the cloth bucket motor and the cloth unwinding motor includes the following strategies (1) to (4):

[0078] (1) If the cloth state signal is the cloth-existing state, a preset fixed amount is subtracted from the speed compensation value after the last adjustment to obtain the speed compensation value after the current adjustment.

[0079] (2) If the cloth state signal is the cloth-free state, a preset fixed amount is added to the speed compensation value adjusted last time to obtain the speed compensation value adjusted currently.

[0080] (3) If the cloth state signal is that the cloth-free state is switched to the cloth-present state, the speed compensation value adjusted last time is first cleared to zero, and then a preset fixed amount is subtracted to obtain the speed compensation value adjusted this time.

[0081] (4) If the cloth state signal is the state of switching from the cloth-with state to the cloth-without state, the speed compensation value adjusted last time is first cleared to zero, and then a preset fixed amount is added to obtain the speed compensation value adjusted this time.

[0082] It should be noted that in the above strategies (3) and (4), the method of clearing to zero first and then adding a fixed amount is adopted. This is because according to the results of previous experiments, if the zeroing operation is not performed and the compensation value is directly increased or decreased in the opposite direction, the actual control effect will be significantly reduced. This implementation method can more accurately adapt to the production needs under different fabric conditions and improve the responsiveness and stability of the system.

[0083] In step S303, the basic speed value and the speed compensation value are superimposed to obtain a superimposed speed value.

[0084] In step S304, the target rotation speeds of the cloth bucket motor and the cloth unwinding motor are determined based on the superimposed speed value.

[0085] See also Figure 3 , which is a flow chart of another embodiment of the cloth tension control method described in the present application. Figure 3 As shown, based on the superimposed speed value, determining the target speed of the cloth bucket motor and the cloth unravelling motor includes: judging whether the superimposed speed value is greater than a first preset threshold value and less than a second preset threshold value; if so, using the superimposed speed value as the target speed of the cloth bucket motor and the cloth unravelling motor; otherwise, judging whether the superimposed speed value is less than or equal to the first preset threshold value; if so, using the first preset threshold value as the target speed of the cloth bucket motor and the cloth unravelling motor; otherwise, using the second preset threshold value as the target speed of the cloth bucket motor and the cloth unravelling motor.

[0086] In step S400, the target speed instruction is sent to a corresponding driver to drive the cloth bucket motor and the cloth unwinding motor to operate at the target speed.

[0087] In one embodiment of the present application, the target speeds of the cloth bucket motor and the cloth unwinding motor are consistent. In order to save resources, the present application can use a single driver to simultaneously control the cloth bucket motor and the cloth unwinding motor to achieve a coordinated action mode of the two motors. This implementation method not only simplifies the design of the control system, but also helps to improve the stability and efficiency of the overall system.

[0088] In one embodiment of the present application, the target speed instruction may be a frequency value that the driver can directly recognize. The present application uses frequency as a control parameter to simplify the communication protocol, making data transmission from the control system to the driver more efficient and reliable; secondly, most modern AC motor drivers support adjusting the rotation speed of the output shaft by changing the frequency of the input signal, which means that using the frequency value as an instruction can be directly compatible with existing hardware devices without additional modification; finally, the variable frequency signal generated based on PWM (pulse width modulation) technology has good anti-interference performance and can maintain stable transmission in complex electromagnetic environments, thereby improving the reliability of the entire system.

[0089] This application ultimately expects that the cloth bucket motor and the cloth unwinding motor can achieve steady-state operation, which is specifically manifested in that the cloth bucket motor and the cloth unwinding motor can fluctuate slightly around the target speed. The fluctuation range may be affected by many factors. For example, the type of cloth, the change in the current speed of the travel motor, and the preset speed compensation value fixed amount.

[0090] It should be noted that in the technical solution of this application, the travel motor, cloth bucket motor, and cloth unwinding motor involved are not limited to the application of asynchronous motors, and can also be other types of motors such as brushed motors, brushless motors, and servo motors. This application can flexibly adapt to different application scenarios and performance requirements, thereby optimizing the working effect of the entire system.

[0091] The protection scope of the fabric tension control method described in the embodiment of the present application is not limited to the execution order of the steps listed in the present embodiment. All solutions implemented by adding, reducing or replacing steps in the prior art based on the principles of the present application are included in the protection scope of the present application.

[0092] See also Figure 4 , which is a schematic diagram of the structure of the integrated board of the cloth laying machine described in this application in one embodiment. Figure 4 As shown, the present application provides a paving machine integrated board, including a state acquisition module, a speed acquisition module, a speed calculation module and a speed transmission module.

[0093] The present application achieves precise management of fabric tension in an integrated manner. The fabric spreading machine integrated board is equivalent to the main control of the machine, responsible for sending precise speed instructions to each driver, thereby coordinating the work of each part to achieve the best fabric processing effect. This integrated design solution helps to improve the stability and response speed of the system, and also simplifies the installation and maintenance process.

[0094] In one embodiment of the present application, the state acquisition module is used to acquire the real-time state of the cloth inside the cloth unwinding tank to obtain a state signal of the cloth.

[0095] In one embodiment of the present application, the speed acquisition module is used to acquire the current rotation speed of the travel motor.

[0096] In one embodiment of the present application, the speed calculation module is used to calculate the target speeds of the cloth bucket motor and the cloth unwinding motor based on the state signal of the cloth and the current speed of the walking motor, and generate corresponding target speed instructions; the target speeds of the cloth bucket motor and the cloth unwinding motor are consistent.

[0097] In one embodiment of the present application, the speed transmission module is used to send the target speed instruction to the corresponding driver to drive the cloth bucket motor and the cloth unwinding motor to operate at the target speed.

[0098] It should be noted that the structures and principles of the state acquisition module, the speed acquisition module, the speed calculation module and the speed transmission module in the embodiment of the present application correspond one-to-one to the steps in the above-mentioned cloth tension control method, so they will not be repeated here.

[0099] The cloth spreading machine integrated board provided in the embodiment of the present application can implement the cloth tension control method described in the present application, but the implementation device of the cloth tension control method described in the present application includes but is not limited to the structure of the cloth spreading machine integrated board listed in the present embodiment. All structural deformations and replacements of the prior art made according to the principles of the present application are included in the protection scope of the present application.

[0100] See also Figure 5 , which is a schematic diagram of the structure of a cloth tension control system described in the present application in one embodiment. Figure 5 As shown, the present application provides a cloth tension control system, including: a spreading machine integrated board as described above, a cloth unwinding sensor, a travel motor driver, a travel motor, an encoder (not shown), a cloth bucket motor and a cloth unwinding motor driver, a cloth bucket motor and a cloth unwinding motor.

[0101] In one embodiment of the present application, the cloth unwinding sensor is used to monitor the real-time status of the cloth inside the cloth unwinding tank.

[0102] In one embodiment of the present application, the travel motor driver is used to receive a target travel speed instruction sent by the cloth spreading machine integrated board, and generate a first drive instruction based on the travel speed instruction.

[0103] In one embodiment of the present application, the walking motor is used to operate at a target walking speed under the drive of the first driving instruction.

[0104] In one embodiment of the present application, the encoder is used to measure the current rotation speed of the travel motor.

[0105] In one embodiment of the present application, the cloth bucket motor and the cloth unwinding motor driver are used to receive a target speed instruction sent by the cloth spreading machine integrated board, and generate a second drive instruction based on the target speed instruction.

[0106] In one embodiment of the present application, the cloth bucket motor and the cloth unwinding motor are used to operate at a target speed under the drive of the second driving instruction.

[0107] The single cycle control scheme of the present application will be described in detail below in conjunction with a specific embodiment.

[0108] First, the cloth spreading machine integrated board will send the first driving instruction to the travel motor driver. Driven by the first driving instruction, the travel motor runs at the target travel speed V1. The cloth spreading machine integrated board calculates the basic speed value V2 of the cloth bucket motor and the cloth unwinding motor according to the absolute value of the target travel speed V1. According to the real-time state of the cloth inside the unwinding groove monitored by the unwinding sensor, the speed compensation value V3 of the cloth bucket motor and the cloth unwinding motor is adjusted, wherein the speed compensation value V3 is the speed compensation value adjusted in the last cycle. If the cloth unravelling sensor detects that there is cloth in the cloth unravelling groove, the speed compensation value V3 is subtracted by a preset fixed amount Vd to obtain the superimposed speed value V4; if the cloth unravelling sensor detects that there is no cloth in the cloth unravelling groove, the speed compensation value V3 is increased by a preset fixed amount Vd to obtain the superimposed speed value V4; if the cloth unravelling sensor detects that the cloth unravelling groove switches from a state of no cloth to a state of cloth, the speed compensation value V3 is first cleared to zero, and then a preset fixed amount Vd is subtracted to obtain the superimposed speed value V4; if the cloth unravelling sensor detects that the cloth unravelling groove switches from a state of cloth present to a state of no cloth present, the speed compensation value V3 is first cleared to zero, and then a preset fixed amount is increased to obtain the superimposed speed value V4.

[0109] Next, determine whether the superimposed speed value V4 is greater than the first preset threshold value Vmin and less than the second preset threshold value Vmax; if so, use the superimposed speed value V4 as the target speed of the cloth bucket motor and the cloth unravelling motor; otherwise, determine whether the superimposed speed value is less than or equal to the first preset threshold value Vmin; if so, use the first preset threshold value Vmin as the target speed of the cloth bucket motor and the cloth unravelling motor; otherwise, use the second preset threshold value Vmax as the target speed of the cloth bucket motor and the cloth unravelling motor.

[0110] Finally, the target speed is converted into a frequency value that can be directly recognized by the cloth bucket motor and the cloth unraveling motor driver, and sent to the cloth bucket motor and the cloth unraveling motor driver, which are used to drive the cloth bucket motor and the cloth unraveling motor to operate at the target speed.

[0111] The fabric tension control system described in this application is a closed-loop control system, and its core goal is to ensure that the speed of the fabric relative to the workbench remains zero. In each control cycle, the system recalculates the basic speed value and adjusts the compensation value accordingly. When the entire system reaches steady-state operation, the speed of the cloth bucket motor and the cloth unwinding motor will show small fluctuations within a specific range. This design strategy aims to accurately control the fabric tension in the unwinding trough to avoid problems with fabric stretching or deformation caused by additional pressure applied by the cloth pressing rod in the unwinding trough. In this way, the accuracy and consistency of fabric handling during the production process can be effectively improved.

[0112] See also Figure 6 , which is a schematic diagram of the structure of the cloth tension control terminal described in the present application in one embodiment. Figure 6 As shown, the present application provides a cloth tension control terminal, including: a processor and a memory.

[0113] The memory is used to store computer programs.

[0114] The processor is configured to execute the computer program stored in the memory, so that the terminal executes any one of the above methods.

[0115] Preferably, the processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The memory may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk or an optical disk.

[0116] In the several embodiments provided in the present application, it should be understood that the disclosed system, device or method can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of modules / units is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules or units, which can be electrical, mechanical or other forms.

[0117] The modules / units described as separate components may or may not be physically separated, and the components displayed as modules / units may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules / units may be selected according to actual needs to achieve the purpose of the embodiments of the present application. For example, the functional modules / units in the various embodiments of the present application may be integrated into one processing module, or each module / unit may exist physically separately, or two or more modules / units may be integrated into one module / unit.

[0118] Those of ordinary skill in the art should further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0119] The present application embodiment also provides a computer-readable storage medium. A person of ordinary skill in the art can understand that all or part of the steps in the method for implementing the above embodiment can be completed by a program to instruct the processor, and the program can be stored in a computer-readable storage medium, and the storage medium is a non-transitory medium, such as a random access memory, a read-only memory, a flash memory, a hard disk, a solid-state hard disk, a magnetic tape, a floppy disk, an optical disc, and any combination thereof. The above storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid-state hard disk (SSD)), etc.

[0120] The embodiment of the present application may also provide a computer program product, including computer instructions, which implement the above-mentioned method when executed by a processor. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer or data center to another website, computer or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0121] When the computer program product is executed by a computer, the computer executes the method described in the above method embodiment. The computer program product may be a software installation package, and when the above method is required, the computer program product may be downloaded and executed on a computer.

[0122] The descriptions of the processes or structures corresponding to the above-mentioned figures have different emphases. For parts that are not described in detail in a certain process or structure, please refer to the relevant descriptions of other processes or structures.

[0123] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A cloth tension control method, applied to a cloth spreading machine integrated board, characterized in that: include: Obtain the real-time status of the fabric in the unwinding tank and obtain the status signal of the fabric; Get the current speed of the travel motor; Based on the cloth state signal and the current speed of the travel motor, the target speeds of the cloth bucket motor and the cloth unwinding motor are calculated, and a corresponding target speed instruction is generated; the target speeds of the cloth bucket motor and the cloth unwinding motor are consistent; The target speed instruction is sent to a corresponding driver to drive the cloth bucket motor and the cloth unwinding motor to operate at the target speed.

2. The method according to claim 1, characterized in that Based on the cloth state signal and the current rotation speed of the travel motor, calculating the target rotation speeds of the cloth bucket motor and the cloth unwinding motor includes: Based on the current speed of the travel motor, the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor are calculated by a pre-established linear regression model; the linear regression model is obtained by curve fitting the speed data of the travel motor, the cloth bucket motor or the cloth unwinding motor under different working conditions; Based on the cloth state signal, adjusting the speed compensation value of the cloth bucket motor and the cloth unwinding motor; the cloth state signal includes a cloth state, a cloth-free state, switching from a cloth-free state to a cloth-free state, and switching from a cloth-free state to a cloth-existing state; the initial value of the speed compensation value is zero; Superimposing the basic speed value and the speed compensation value to obtain a superimposed speed value; Based on the superimposed speed value, the target rotation speeds of the cloth bucket motor and the cloth unwinding motor are determined.

3. The method according to claim 2, characterized in that Based on the superimposed speed value, determining the target rotation speeds of the cloth bucket motor and the cloth unwinding motor comprises: Determining whether the stacking velocity value is greater than a first preset threshold and less than a second preset threshold; If yes, the superimposed speed value is used as the target speed of the cloth bucket motor and the cloth unwinding motor; Otherwise, determining whether the stacking velocity value is less than or equal to the first preset threshold; If yes, the first preset threshold is used as the target rotation speed of the cloth bucket motor and the cloth unwinding motor; Otherwise, the second preset threshold is used as the target rotation speed of the cloth bucket motor and the cloth unwinding motor.

4. The method according to claim 2, characterized in that: Adjusting the speed compensation values ​​of the cloth bucket motor and the cloth unwinding motor based on the cloth state signal includes: If the cloth state signal is the cloth-existing state, a preset fixed amount is subtracted from the speed compensation value adjusted last time to obtain the speed compensation value adjusted currently; If the cloth state signal is the cloth-free state, a preset fixed amount is added to the speed compensation value adjusted last time to obtain the speed compensation value adjusted currently; If the cloth state signal is the state of switching from no cloth to cloth state, firstly clear the speed compensation value adjusted last time, and then subtract a preset fixed amount to obtain the speed compensation value adjusted currently; If the cloth state signal is the state of switching from cloth-with state to cloth-without state, the speed compensation value adjusted last time is first cleared to zero, and then a preset fixed amount is added to obtain the speed compensation value adjusted this time.

5. The method according to claim 2, characterized in that: Based on the current rotational speed of the travel motor, the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor are calculated by a pre-established linear regression model, including taking the current rotational speed of the travel motor as input and substituting it into the linear regression model to output the basic speed values ​​of the cloth bucket motor and the cloth unwinding motor.

6. The method according to claim 2, characterized in that The linear regression model is a linear equation model; the formula corresponding to the linear equation model is: Vh=Vw×k+b; Wherein Vh represents the basic speed value of the cloth bucket motor and the cloth unwinding motor; Vw represents the current speed of the travel motor; k represents the slope; b represents the intercept.

7. A cloth laying machine integrated board, characterized in that: include: The state acquisition module is used to obtain the real-time state of the cloth in the unwinding tank and obtain the state signal of the cloth; Speed ​​acquisition module, used to obtain the current speed of the walking motor; A speed calculation module, for calculating the target speeds of the cloth bucket motor and the cloth unwinding motor based on the cloth state signal and the current speed of the travel motor, and generating a corresponding target speed instruction; the target speeds of the cloth bucket motor and the cloth unwinding motor are consistent; The speed transmission module is used to send the target speed instruction to the corresponding driver to drive the cloth bucket motor and the cloth unwinding motor to operate according to the target speed.

8. A cloth tension control system, characterized in that: include: The integrated board of the paving machine as claimed in claim 7; The cloth unwinding sensor is used to monitor the real-time status of the cloth inside the cloth unwinding tank; A travel motor driver, used for receiving a target travel speed instruction sent by the cloth spreading machine integrated board, and generating a first drive instruction based on the travel speed instruction; A walking motor, configured to operate at a target walking speed under the drive of the first driving instruction; An encoder, used to measure the current rotation speed of the travel motor; The cloth bucket motor and the cloth unwinding motor driver are used to receive the target speed instruction sent by the cloth spreading machine integrated board, and generate a second drive instruction based on the target speed instruction; The cloth bucket motor and the cloth unwinding motor are used to operate at a target speed under the drive of the second driving instruction.

9. A cloth tension control terminal, characterized in that: include: Processor and memory; The memory is used to store computer programs; The processor is configured to execute the computer program stored in the memory, so that the terminal executes the method according to any one of claims 1 to 6.

10. A computer program product comprising computer instructions, characterized in that: When the computer instructions are executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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