Control method, control device and integrated control system of winding motor

Abstract

The application discloses a control method and device of a winding motor and an integrated control system. The control method of the winding motor is used for controlling winding of annealed wire. The control method of the winding motor comprises the following steps: collecting an electric signal of a winding motor driven in a variable frequency driving mode during winding; calculating an operating state parameter of the winding motor by using the electric signal; comparing the operating state parameter with a corresponding first preset parameter value to obtain a first comparison result; and determining whether the winding motor is in a broken wire operating state by using the first comparison result. In this way, whether the annealed wire is broken can be determined without setting a sensor for detecting whether the annealed wire is broken.

Description

Technical Field

[0001] This application relates to the field of winding motor control, and in particular to control methods, control devices and integrated control systems for winding motors. Background Technology

[0002] With the rapid development of science and technology, and thanks to the continuous advancements in circuit structures and control methods, the automation level of various production equipment is increasing, improving productivity while reducing people's workload. In the annealed metal wire industry, people often rely on winding motors to automatically wind annealed metal wires.

[0003] In the prior art, the driver often drives the winding motor by single-phase voltage regulation. When the annealed metal wire breaks, the driver cannot detect the breakage and therefore cannot take corresponding measures. Summary of the Invention

[0004] The main technical problem addressed by this application is to provide a control method, control device, and integrated control system for a winding motor that can automatically perform open-loop judgment on whether the annealed metal wire is broken. It can detect the breakage of the annealed metal wire in a timely manner without the need for sensors (such as tension sensors or speed sensors) to detect whether the annealed metal wire is broken, thereby reducing the generation of waste wire. At the same time, it saves the purchase and installation costs of sensors used to detect whether the annealed metal wire is broken, and also makes the control device for the winding motor easy to install.

[0005] To solve the above-mentioned technical problems, the first technical solution adopted in this application is: to provide a control method for a winding motor for controlling the winding of annealed metal wire. The control method for the winding motor includes: acquiring electrical signals of the winding motor driven by a frequency converter during the winding process; calculating the operating status parameters of the winding motor using the electrical signals; comparing the operating status parameters with corresponding first preset parameter values ​​to obtain a first comparison result; and determining whether the winding motor is in a disconnected operating state using the first comparison result.

[0006] To solve the above-mentioned technical problems, the second technical solution adopted in this application is: to provide a control device for a winding motor, including a frequency converter drive circuit, a first processor, and a memory; the first processor is coupled to the memory and the frequency converter drive circuit; when the frequency converter drive circuit receives the control command from the first processor, it outputs the drive signal required by the control command to the winding motor to drive the winding motor to operate according to the control command; the memory is used to store program data; the first processor executes the program data when working to implement the method provided by the first technical solution.

[0007] To solve the above-mentioned technical problems, the third technical solution adopted in this application is: to provide an integrated control system for a winding motor, including a host computer and at least one control device provided by the second technical solution, wherein each control device is networked with the host computer and each control device is capable of data interaction with the host computer.

[0008] The beneficial effects of this application are as follows: Unlike the prior art, by collecting the electrical signals of the winding motor driven by the frequency converter during the winding process, the operating status parameters of the winding motor are calculated using the electrical signals. The operating status parameters are compared with the corresponding first preset parameter values ​​to obtain a first comparison result. The first comparison result is used to determine whether the winding motor is in a broken wire operating state. When the annealed metal wire breaks, the control device of the winding motor can automatically perform an open-loop judgment on whether the annealed metal wire is broken. It is not necessary to use sensors (such as tension sensors or speed sensors) to detect whether the annealed metal wire is broken. It can also determine whether the annealed metal wire is broken by collecting the electrical signals of the winding motor during the winding process. This makes the function of the control device of the winding motor more diversified. Thus, without setting up sensors to detect whether the annealed metal wire is broken, the broken wire situation of the annealed metal wire can be detected in time, reducing the generation of waste wire. At the same time, it saves the purchase and installation costs of sensors for detecting whether the annealed metal wire is broken, and also makes the control device of the winding motor easier to install. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of an annealing production line for annealed metal wire.

[0010] Figure 2 This is a flowchart illustrating an embodiment of the control method for the winding motor of this application;

[0011] Figure 3 This is a flowchart illustrating the process before comparing the running status parameters with the corresponding first preset parameter values;

[0012] Figure 4 A flowchart illustrating how to determine whether the winding motor is in a non-resistance state;

[0013] Figure 5 This is a flowchart illustrating the process before comparing the running status parameters with the corresponding second preset parameter values.

[0014] Figure 6 A flowchart illustrating how to determine whether the load torque is in the electric region;

[0015] Figure 7 This is a schematic block diagram of the control device and the winding motor of the present application;

[0016] Figure 8This is a schematic diagram of the structure of the applicant's human-computer interaction panel;

[0017] Figure 9 This is a schematic block diagram of the integrated control system of the winding motor, the winding motor, and the unwinding device of this application. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] Through long-term research, the inventors have discovered that in the annealed metal wire industry, winding motors are often used to wind the annealed metal wire. In existing technology, the driver often drives the winding motor via single-phase voltage regulation. When a wire breakage occurs in the annealed metal wire, the driver cannot detect the breakage and therefore cannot take appropriate corrective measures. To solve the above-mentioned technical problems, this application provides the following embodiments.

[0020] like Figure 1 As shown, the metal wire enters the annealing apparatus 40 during the annealing process for annealing treatment. The unannealed end of the metal wire is unloaded by the unloading device 30 and continuously enters the annealing apparatus 40. The annealed end of the metal wire is wound up by the winding motor 20, continuously pulling the annealed metal wire 50 out of the annealing apparatus 40. During the winding process, the annealed metal wire 50 may break, which is detrimental to the annealing of the metal wire and the winding of the annealed metal wire 50.

[0021] Optionally, the annealed metal wire 50 can be wound onto the reel 21 during winding. The reel 21 is detachably mounted on the output shaft of the winding motor 20 and rotates continuously with the output shaft of the winding motor 20 to wind the annealed metal wire 50. When the annealed metal wire 50 wound on the reel 21 reaches a preset length or preset weight, the empty reel 21 can be replaced to continue working.

[0022] The control method described in the embodiments of the winding motor control method of this application is used to control the winding of annealed metal wire. For example... Figure 2 As shown, the control method for the winding motor includes: S100: acquiring electrical signals from the winding motor driven by a frequency converter during the winding process. S200: calculating the operating status parameters of the winding motor using the electrical signals. S300: comparing the operating status parameters with corresponding first preset parameter values ​​to obtain a first comparison result. S400: determining whether the winding motor is in a disconnected operating state using the first comparison result.

[0023] By collecting the electrical signals of the winding motor 20 driven by the variable frequency drive during the winding process, the operating status parameters of the winding motor 20 are calculated using the electrical signals. The operating status parameters are compared with the corresponding first preset parameter values ​​to obtain a first comparison result. The first comparison result is used to determine whether the winding motor 20 is in a wire breakage state. When the annealed metal wire 50 breaks, the control device 1 of the winding motor 20 can automatically perform an open-loop judgment on whether the annealed metal wire 50 is broken. It is not necessary to use sensors (such as tension sensors or speed sensors) to detect whether the annealed metal wire 50 is broken. It can also determine whether the annealed metal wire 50 is broken by collecting the electrical signals of the winding motor 20 during the winding process. This makes the function of the control device of the winding motor 20 more diversified. Thus, without setting up sensors to detect whether the annealed metal wire 50 is broken, the wire breakage of the annealed metal wire 50 can be detected in time, reducing the generation of waste wire. At the same time, it can also save the purchase and installation costs of sensors to detect whether the annealed metal wire 50 is broken, and also make the control device 1 of the winding motor 20 easier to install.

[0024] The following is a detailed description of the embodiments of the control method for the winding motor of this application.

[0025] S100: Collects electrical signals from a winding motor driven by a variable frequency drive during the winding process.

[0026] Variable frequency drive enables open-loop tension control, and the winding status of the annealed wire during the winding process can be reflected in the electrical signal of the winding motor. By acquiring the electrical signal of the winding motor, the winding status of the annealed wire can be obtained.

[0027] Specifically, acquiring the electrical signals of the winding motor includes sampling the three-phase current signals of the winding motor and reconstructing the three-phase output voltage of the winding motor.

[0028] Optionally, before acquiring the electrical signal of the winding motor driven by the frequency converter during the winding process, it can be determined whether the winding motor is in the starting state. For details, please refer to the following steps after S100:

[0029] S110: Obtain the digital input signal of the winding motor.

[0030] A digital input signal is a switching input signal that indicates whether the winding motor is in a started or stopped state. By acquiring the digital input signal of the winding motor, it is possible to further determine whether the winding motor is in a started or stopped state.

[0031] S120: Determines whether the winding motor is in the start or stop state based on the digital input signal.

[0032] S130: If the winding motor is in the start state, then the electrical signals during the winding process of the winding motor will be collected.

[0033] If the winding motor is running, it indicates that it is being used to wind the annealed metal wire. In this case, the electrical signals from the winding motor during the winding process can be collected to determine if any wire breakage has occurred. If the winding motor is stopped, it is not necessary to collect the electrical signals from the winding motor during the winding process.

[0034] S200: Calculates the operating status parameters of the take-up motor using electrical signals.

[0035] By calculating the operating status parameters of the winding motor, the operating status of the winding motor can be quantified, so as to further determine whether the operating status of the winding motor is normal, thereby determining whether there is a wire breakage defect in the winding process of annealed metal wire.

[0036] Specifically, calculating the operating status parameters of the winding motor using electrical signals includes: calculating the operating status parameters of the winding motor using the three-phase current signal and the three-phase output voltage of the winding motor.

[0037] Optionally, the take-up motor is an asynchronous motor. For example, the take-up motor is a torque motor. Accordingly, the operating status parameters of the take-up motor are calculated using electrical signals, as detailed in the following steps included in S200:

[0038] S210: Calculate the operating status parameters of the winding motor using electrical signals through an asynchronous motor model.

[0039] Based on the three-phase current signal and three-phase output voltage of the winding motor, the operating state parameters of the winding motor are calculated using an asynchronous motor model. The calculated operating state parameters may include at least one of slip, speed, and load torque. In other embodiments, the calculated operating state parameters may also include other parameters, which are not listed here. Asynchronous motor torque is related to slip. Load torque is positively correlated with the tension of the annealed wire. Load torque is positively correlated with slip and negatively correlated with speed. For example, after the annealed wire breaks, slip decreases, speed increases, and load torque decreases.

[0040] The asynchronous motor model is a calculation model used to calculate the motor's slip, rotor speed, and load torque based on the motor's voltage and current. In other embodiments, the asynchronous motor model can also be used to calculate other types of parameters, which are not listed here.

[0041] S300: Compare the running status parameters with the corresponding first preset parameter values ​​to obtain the first comparison result.

[0042] The first preset parameter value represents a critical value of the operating state parameter when the winding motor is normally winding the annealed metal wire. Different operating state parameters correspond to different first preset parameter values. For example, if the operating state parameter is the load torque, the corresponding first preset parameter value is a critical value of the load torque when the winding motor is normally winding the annealed metal wire.

[0043] The first comparison result is the result of comparing the operating status parameters with the corresponding first preset parameter values. Based on the first comparison result, the state of the winding motor when winding the annealed metal wire can be further determined.

[0044] In some embodiments, during the winding process, the critical value of the operating state parameter when the annealed metal wire is being wound normally can also be a range, and the first comparison result is the result of comparing the operating state parameter with the critical value of the range.

[0045] Optionally, the winding process may involve manual intervention. When the annealed wire wound on the reel reaches a preset length or weight, an empty reel can be manually replaced. During manual reel replacement, the winding motor can remain running to avoid multiple start-stop operations and improve production efficiency. However, since the annealed wire is not being wound, the winding motor does not sense the tension of the annealed wire. Therefore, the control device of the winding motor may misinterpret this as a wire breakage, triggering the winding motor to stop. To prevent the manual reel replacement operation from being misinterpreted as a wire breakage, the possibility of manual reel replacement can be ruled out before comparing the operating status parameters with the corresponding first preset parameter values ​​and obtaining the first comparison result. Figures 3 to 5 As shown, please refer to the following steps included in S300:

[0046] S310: Determine whether the winding motor is in a non-resistance state.

[0047] When manually changing the winding reel, a resistance is applied to the output shaft of the winding motor, hindering its rotation to facilitate the reel change. In this state, the winding motor is under resistance. However, when the annealed wire breaks or during normal winding, the winding motor is in a non-resistance state.

[0048] Therefore, the possibility of manual reel replacement can be identified by whether the winding motor is in a non-resistance state, thus ruling out the possibility of a broken annealed wire before determining whether a breakage has occurred. If the winding motor is in a non-resistance state, the possibility of manual reel replacement can be ruled out.

[0049] Optionally, for determining whether the take-up motor is in a non-resistance state, please refer to the following steps included in S310:

[0050] S311: Compare the running status parameters with the second preset parameter values ​​to obtain the second comparison result.

[0051] When manually changing the winding reel, a resistance is applied to the output shaft of the winding motor to impede its rotation. Due to this manual resistance, the operating parameters of the winding motor will change accordingly, and can be distinguished from the operating parameters of the winding motor when the winding process is in normal operation.

[0052] The second preset parameter value can be another critical value for the operating status parameters of the winding motor during normal winding process. The second comparison result is the result of comparing the operating status parameters with the second preset parameter value. Based on the second comparison result, it can be further determined whether the winding motor is in the corresponding state for manual reel replacement.

[0053] When the second preset parameter value and the first preset parameter value are the same operating state parameter, the second preset parameter value and the first preset parameter value can be compared. For example, when the second preset parameter value and the first preset parameter value are both load torque, the second preset parameter value is greater than the first preset parameter value. As another example, when the second preset parameter value and the first preset parameter value are both load torque change rate, the second preset parameter value is greater than the first preset parameter value.

[0054] Optionally, before comparing the operating status parameters with the corresponding second preset parameter values ​​to obtain the second comparison result, it can be determined whether the winding motor is in generator operation mode or motor operation mode, such as... Figure 5 As shown, for details, please refer to the following steps S3111 and S3115 included in S311.

[0055] S3111: Determine whether the load torque is in the electric range.

[0056] If the take-up motor is in generator mode, the load torque is in the generator region. If the take-up motor is in electric mode, the load torque is in the electric region. When manually changing the reel, the take-up motor is in electric mode, and the load torque is in the electric region and increasing. If the load torque is detected to be in the generator region or decreasing, there is no need to compare the operating status parameters with the corresponding second preset parameter value. This setting reduces calculations and improves judgment efficiency.

[0057] Optionally, how to determine whether the load torque is in the electric range, such as... Figure 6 As shown, for details, please refer to the following steps S3112-S3114 included in S3111.

[0058] S3112: Obtain the rotation direction of the winding motor and the direction of the load torque.

[0059] S3113: Determine whether the rotation direction of the winding motor and the load torque direction are the same.

[0060] S3114: If the rotation direction of the winding motor is the same as the direction of the load torque, then the load torque is determined to be in the electric region.

[0061] If the rotation direction of the winding motor is opposite to the direction of the load torque, then the load torque is determined to be in the power generation region.

[0062] S3115: If the load torque is in the electric region, then the operating status parameters are compared with the corresponding second preset parameter values.

[0063] If the load torque is in the electric range and is increasing, it indicates that there is a possibility of manual reel replacement. The operating status parameters can be compared with the corresponding second preset parameter values ​​to obtain a second comparison result.

[0064] S312: Use the second comparison result to determine whether the winding motor is in a non-resistance state.

[0065] When manually changing the reel, the winding motor is in a resistance state. However, when the annealed wire breaks or the winding process is proceeding normally, the winding motor is in a non-resistance state. Based on the second comparison result, it can be determined whether the winding motor is in a non-resistance state or a resistance state, thus determining whether the winding motor is in the stage of manual reel changing.

[0066] Optionally, the operating status parameters include load torque, and correspondingly, the second preset parameter value includes a second torque threshold. For details on how to use the second comparison result to determine whether the winding motor is in a non-resistance state, please refer to the following steps included in S312:

[0067] S313: If the second comparison result is that the maximum value of the load torque is less than the second torque threshold, then the winding motor is determined to be in a non-resistance state.

[0068] A non-resistance state of the winding motor indicates that the annealed wire has broken or the winding process is proceeding normally.

[0069] S314: If the second comparison result is that the maximum value of the load torque is greater than or equal to the second torque threshold, then the winding motor is determined to be in a resistance state.

[0070] The winding motor being in a resistance state indicates that it is in the stage of manual reel changing. Specifically, during manual reel changing, the operator applies significant resistance to the output shaft of the winding motor, causing it to stall. For the winding motor, the load torque corresponding to the resistance manually applied to the output shaft is greater than the load torque caused by the tension of the annealed wire during normal winding, and also greater than the load torque of the winding motor when the annealed wire breaks.

[0071] Optionally, the operating status parameters include the load torque change rate, and correspondingly, the second preset parameter value includes a second torque change rate threshold. For details on how to use the second comparison result to determine whether the winding motor is in a non-resistance state, please refer to the following steps included in S312:

[0072] S315: If the load torque change rate is less than the second torque change rate threshold, then the winding motor is determined to be in a non-resistance state.

[0073] A non-resistance state of the winding motor indicates that the annealed wire has broken or the winding process is proceeding normally.

[0074] S316: If the load torque change rate is greater than or equal to the second torque change rate threshold, then the winding motor is determined to be in a resistance state.

[0075] The winding motor being in a resistance state indicates that it is in the stage of manual reel changing. Specifically, during manual reel changing, the operator applies significant resistance to the output shaft of the winding motor, causing it to stall and resulting in a rapid change in load torque. For the winding motor, the rate of change in load torque corresponding to the resistance manually applied to the output shaft is greater than the rate of change in load torque caused by the tension of the annealed wire during normal winding, and also greater than the rate of change in load torque caused by a break in the annealed wire.

[0076] Optionally, when the annealed metal wire breaks, the load torque of the winding motor decreases, while when the reel is manually replaced, the load torque of the winding motor increases. The difference between the annealed metal wire breaking and the manual reel replacement can be distinguished by the change in load torque.

[0077] S320: If the winding motor is in a non-resistance state, then the operation status parameters are compared with the corresponding first preset parameter values.

[0078] If the winding motor is in a non-resistance state, the possibility of manually replacing the reel is ruled out. Then, the annealed wire can be determined by comparing the operating status parameters with the corresponding first preset parameter values.

[0079] S330: If the winding motor is in a resistance state, the breakage judgment of the annealed metal wire can be skipped for a certain period of time. The breakage judgment of the annealed metal wire can be started after the reel is manually replaced.

[0080] S400: Use the first comparison result to determine whether the winding motor is in a disconnected operation state.

[0081] If the first comparison result indicates that the annealed metal wire is broken, the winding motor is in a broken-wire operation state. The control device of the winding motor can further execute actions to end the broken-wire operation state of the winding motor, such as stopping the machine and sounding an alarm. If the first comparison result indicates that the winding motor is winding the annealed metal wire normally and is not in a broken-wire operation state, the above-mentioned electrical signals can continue to be collected until the winding process is completed. This setting allows for open-loop determination of whether the annealed metal wire is broken.

[0082] Optionally, the operating status parameters include load torque, and correspondingly, the first preset parameter value includes a first torque threshold. For details on how to use the first comparison result to determine whether the winding motor is in a disconnected operating state, please refer to the following steps included in S400:

[0083] S410: If the first comparison result is that the steady-state minimum value of the load torque is less than the first torque threshold, then it is determined that the winding motor is in a disconnected operation state.

[0084] When the annealed wire breaks, the tension between the annealed wire and the winding motor is released, resulting in a decrease in load torque. The first torque threshold can be a lower limit of the load torque of the winding motor during normal winding. If the first comparison result shows that the steady-state minimum load torque is less than the first torque threshold, it indicates that the annealed wire has broken and the winding motor is in a broken-wire operation state.

[0085] Optionally, the operating status parameters include the load torque change rate, and correspondingly, the first preset parameter value includes a first torque change rate threshold. For details on how to use the first comparison result to determine whether the winding motor is in a disconnected operating state, please refer to the following steps included in S400:

[0086] S420: If the first comparison result is that the load torque change rate is greater than the first torque change rate threshold, then it is determined that the winding motor is in a disconnected operation state.

[0087] For the winding motor, the rate of change of load torque caused by the breakage of the annealed wire is greater than the rate of change of load torque caused by the tension of the annealed wire during normal winding. The first torque change rate threshold can be an upper limit of the load torque change rate of the winding motor during normal winding. If the first comparison result is that the load torque change rate is greater than the first torque change rate threshold, it indicates that the annealed wire is broken and the winding motor is in a broken wire operation state.

[0088] Optionally, after determining whether the take-up motor is in a disconnected operating state using the first comparison result, the following steps are included in S400:

[0089] S430: If the winding motor is in a disconnected operation state, the winding motor will be controlled to stop rotating and reset by frequency conversion drive.

[0090] When the winding motor is in a disconnected operation state, it idles and cannot effectively wind the annealed metal wire. Therefore, the winding motor can be stopped to avoid wasting its work. Controlling the winding motor to stop via frequency converter drive allows for a shorter braking time and faster shutdown, reducing waste wire generation. Simultaneously, the winding motor's control device is reset, for example, the meter count is zeroed. Furthermore, after a wire breakage, the winding motor can be braked, and the reel can be manually replaced.

[0091] Optionally, the control method further includes:

[0092] S510: The meter-counting sensor detects the pulse signal output by the annealed metal wire.

[0093] Each roll of annealed metal wire needs to have specific specifications, such as a fixed length in meters. During the winding process, a meter-counting sensor can calculate the number of meters wound, i.e., meter counting. The meter-counting sensor can output a pulse signal when counting the length of the annealed metal wire.

[0094] During production, before the winding motor winds the annealed wire, the wire can be manually wound several turns onto the reel, a process known as wire threading. Then, the winding motor starts to wind the wire. When the meter-counting sensor detects this threading process, it outputs a pulse signal corresponding to the threading action. The meter-counting sensor can also output pulse signals corresponding to the end of meter counting or wire breakage.

[0095] S520: Determine the detection result indicated by the pulse signal.

[0096] If the first processor receives a pulse signal while the winding motor is stopped, the pulse signal indicates the threading process of the annealed metal wire. If the first processor receives a pulse signal indicating that the annealed metal wire has stopped winding while the winding motor is running, and the length of the wound wire has not reached the preset length, the pulse signal indicates that the annealed metal wire has broken. If the first processor receives a pulse signal indicating that the annealed metal wire has stopped winding while the winding motor is running, and the length of the wound wire has reached the preset length, the pulse signal indicates that the winding process of the annealed metal wire has been completed.

[0097] S530: Control the winding motor to operate in a matching manner according to the test results.

[0098] For example, if the test results indicate that the threading process of the annealed metal wire has been completed, and the winding motor is in a stopped state, the first processor can control the winding motor to start.

[0099] Optionally, the meter-counting sensor includes a meter-counting guide wheel.

[0100] Optionally, the take-up motor can be controlled to operate in a matching manner according to the test results. For details, please refer to the following steps included in S530:

[0101] S531: If the detection result is a broken wire or the meter counting ends, the winding motor will be controlled to stop rotating and reset by frequency conversion drive.

[0102] If the detection result indicates a broken wire, the winding motor will idle. In this case, the winding motor cannot effectively wind the annealed metal wire, and its rotation can be stopped to avoid wasting energy. If the detection result indicates the meter counting is complete, the winding motor needs to be stopped to halt winding. Controlling the winding motor via frequency converter allows for a shorter braking time and faster stopping, reducing waste wire after a break. Simultaneously, the winding motor's control device is reset, for example, the meter count is zeroed. Furthermore, after a break, the winding motor can be braked, and the reel can be manually replaced.

[0103] Optionally, the take-up motor can be controlled to operate in a matching manner according to the test results. For details, please refer to the following steps included in S530:

[0104] S532: After the winding motor is reset, if the detection result shows that the annealed metal wire is being threaded, the winding motor is started by frequency conversion drive.

[0105] After the take-up motor resets and stops, if the detection result indicates that the annealed metal wire is being threaded, it means that a manual reel change is in progress. Once the threading process of the annealed metal wire is confirmed to be complete, the first processor can control the take-up motor to start. Controlling the take-up motor start via frequency conversion drive allows for shorter start-up times and improved production efficiency. This setup avoids the need for manual start-up of the take-up motor, increasing the automation level of the winding process.

[0106] like Figure 7 As shown in the embodiment of the control device for the winding motor of this application, the control device 1 includes a frequency converter drive circuit 100, a first processor 200, and a memory 300. The first processor 200 is coupled to the memory 300 and the frequency converter drive circuit 100. When the frequency converter drive circuit 100 receives a control command from the first processor 200, it outputs a drive signal required by the control command to the winding motor 20 to drive the winding motor 20 to operate according to the control command. The memory 300 is used to store program data. When the first processor 200 is working, it executes the program data to implement the control method described in the embodiment of the control method for the winding motor of this application, for example, implementing... Figures 2 to 6 The method described in any of its corresponding embodiments.

[0107] Driving the take-up motor 20 via the frequency converter drive circuit 100 in a frequency converter drive mode has the following advantages:

[0108] The variable frequency drive (VFD) can detect load torque to monitor tension. If the load torque fluctuates, tension control can be achieved by adjusting the output frequency, thus realizing open-loop tension control. The VFD can simultaneously regulate the three-phase voltage, ensuring balanced three-phase current and uniform torque control, avoiding torque fluctuations and losses caused by three-phase current imbalance. The VFD can also control the winding motor 20 to respond quickly by adjusting the output frequency, enabling rapid start and stop, which improves production efficiency. The VFD can control two winding motors 20 simultaneously with one driver, reducing driver size, simplifying wiring, and facilitating maintenance. The VFD is easily integrated into communication networks for control. By adding communication functions, batch networking can be implemented, allowing centralized management of multiple winding motors 20. Parameter settings for each winding motor 20 can be configured, and the operating status of each winding motor 20 can be monitored and fed back in real time, achieving automated and intelligent production control.

[0109] Optionally, when there are at least two winding motors 20, the frequency converter drive circuit 100 can be used to drive at least two winding motors 20 using frequency conversion, allowing at least two winding motors 20 to start and operate independently. The method provided in this application can simultaneously control each winding motor 20 to operate independently with different parameters. When the parameters of the annealed metal wire 50 wound by the two winding motors 20 are different, the first preset parameter value and the second preset parameter value, as well as the motor operating state parameters, for each winding motor 20 can be different. Using a single driver including the frequency converter drive circuit 100 to simultaneously control two winding motors 20 can reduce the size of the driver, improve integration, simplify wiring, and facilitate maintenance. Of course, the frequency converter drive circuit 100 can also be used to drive only one winding motor 20 using frequency conversion.

[0110] Optionally, the take-up motor 20 is an asynchronous motor. For example, the take-up motor 20 is a torque motor. The first processor 200 can calculate the operating state parameters of the take-up motor 20 through an asynchronous motor model.

[0111] Optionally, the control device 1 for the take-up motor 20 includes a human-machine interface circuit 400 and a second processor 500. The human-machine interface circuit 400 is used for user-interactive operations. The second processor 500 is coupled to the human-machine interface circuit 400 and the first processor 200, and is used for data interaction with the first processor 200 and the human-machine interface circuit 400.

[0112] The second processor 500 is used to control the human-machine interaction circuit 400 to realize intelligent human-machine interaction functions. The division of labor between the first processor 200 and the second processor 500 is beneficial to improving the operating efficiency of the control device 1 of the winding motor 20.

[0113] Specifically, the first processor 200 is a TI series chip, and the second processor 500 is an STM32 series chip.

[0114] Optionally, the human-computer interaction circuit 400 may include a human-computer interaction panel 700. For example... Figure 8 As shown, the human-machine interface panel 700 may include two sections. For example, each section may include a display screen 701, a meter counting button 702, a meter length setting button 703, a voltage button 704, a linear speed button 705, a weighing button 706, an address setting button 707, a motor start / stop switch 708, a wire disconnection switch 709, a meter counting reset button 710, and a parameter adjustment knob 711. Each knob, button, and switch is used by the user to set various operating parameters of the winding process. The display screen 701 may be divided into multiple areas to display various operating parameters of the winding process and fault codes to the user.

[0115] Optionally, the control device 1 of the winding motor 20 may include a meter-counting sensor 600, which can be used to achieve constant linear speed control, making the control of load torque more stable.

[0116] like Figure 9 As shown in the embodiment of the integrated control system of the winding motor described in this application, the integrated control system 10 of the winding motor 20 includes a host computer 11 and at least one control device 1 of the winding motor 20. The control device 1 of each winding motor 20 is networked with the host computer 11 and can interact with the host computer 11 for data exchange.

[0117] Optionally, the control device 1 of each winding motor 20 interacts with the host computer 11 via the second processor 500.

[0118] By connecting the control device 1 of each winding motor 20 to the host computer 11, multiple winding motors 20 can be centrally managed. Parameters of each winding motor 20 can be set, and the working status of each winding motor 20 can be monitored and fed back in real time, so as to realize automated and intelligent control of production.

[0119] For example, in the network configuration, the PLC acts as the host computer 11, while the frequency converter and other equipment on the annealing production line act as slave stations, facilitating data exchange and allowing both broadcast and point-to-point response modes. Other equipment on the annealing production line may include the wire feeding device 30, traction machines, etc.

[0120] In summary, this embodiment uses frequency conversion to drive the winding motor 20, which can obtain operating status parameters representing the operating status of the winding motor 20. When the annealed metal wire 50 breaks, the winding motor 20 will enter the broken wire operating state accordingly. Thus, the control device 1 of the winding motor 20 can make an open-loop judgment on whether the annealed metal wire 50 is broken, and can detect the broken wire situation of the annealed metal wire 50 in time, reducing the generation of waste wire.

[0121] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for controlling a winding motor, used to control the winding of annealed metal wire, characterized in that, include: The electrical signals of the winding motor driven by the variable frequency drive during the winding process are collected. The electrical signals include: sampling the three-phase current signals of the winding motor and reconstructing the three-phase output voltage of the winding motor. The operating status parameters of the winding motor are calculated using the electrical signal, and the operating status parameters include load torque or load torque change rate; The operating status parameters are compared with the corresponding first preset parameter values ​​to obtain a first comparison result; The first comparison result is used to determine whether the winding motor is in a disconnected operation state. Before comparing the operating status parameters with the corresponding first preset parameter values ​​to obtain the first comparison result, the process includes: Determine whether the winding motor is in a non-resistance state; If the winding motor is in the non-resistance state, then the operation state parameter is compared with the corresponding first preset parameter value. The determination of whether the winding motor is in a non-resistance state includes: The operating status parameters are compared with the second preset parameter values ​​to obtain a second comparison result; The second comparison result is used to determine whether the winding motor is in the non-resistance state; The operating status parameters include load torque, and correspondingly the second preset parameter value includes a second torque threshold. Determining whether the winding motor is in the non-resistance state using the second comparison result includes: If the second comparison result is that the maximum value of the load torque is less than the second torque threshold, then it is determined that the winding motor is in the non-resistance state; If the second comparison result is that the maximum value of the load torque is greater than or equal to the second torque threshold, then it is determined that the winding motor is in a resistance state. Alternatively, the operating status parameters include the load torque change rate, and correspondingly the second preset parameter value includes a second torque change rate threshold. Determining whether the winding motor is in the non-resistance state using the second comparison result includes: If the load torque change rate is less than the second torque change rate threshold, then the winding motor is determined to be in the non-resistance state; If the load torque change rate is greater than or equal to the second torque change rate threshold, then the winding motor is determined to be in a resistance state.

2. The control method for the winding motor according to claim 1, characterized in that, The operating status parameters include load torque, and correspondingly, the first preset parameter value includes a first torque threshold. Determining whether the take-up motor is in a disconnected operation state using the first comparison result includes: If the first comparison result is that the steady-state minimum value of the load torque is less than the first torque threshold, then the winding motor is determined to be in the disconnected operation state.

3. The control method for the winding motor according to claim 1, characterized in that, The operating status parameters include the load torque change rate, and correspondingly the first preset parameter value includes a first torque change rate threshold. Determining whether the take-up motor is in a disconnected operation state using the first comparison result includes: If the first comparison result is that the load torque change rate is greater than the first torque change rate threshold, then the winding motor is determined to be in the disconnected operation state.

4. The control method for the winding motor according to claim 1, characterized in that, Before comparing the operating status parameters with the corresponding second preset parameter values ​​to obtain the second comparison result, the process includes: Determine whether the load torque is in the electric range; If the load torque is in the electric region, then the operating state parameter is compared with the corresponding second preset parameter value.

5. The control method for the winding motor according to claim 4, characterized in that, The determination of whether the load torque is in the electric range includes: Obtain the rotation direction and load torque direction of the winding motor; Determine whether the rotation direction of the winding motor and the load torque direction are the same; If the rotation direction of the winding motor is the same as the direction of the load torque, then the load torque is determined to be in the electric region.

6. The control method for the winding motor according to claim 1, characterized in that, Determining whether the take-up motor is in a disconnected operation state using the first comparison result includes: If the winding motor is in the disconnected operation state, the winding motor is controlled to stop rotating and reset by frequency conversion drive.

7. A control device for a winding motor, characterized in that, include: Variable frequency drive circuit, first processor, and memory; The first processor is coupled to the memory and the frequency conversion drive circuit; When the frequency converter receives the control command from the first processor, it outputs the drive signal required by the control command to the winding motor to drive the winding motor to operate according to the control command; the memory is used to store program data. The first processor executes the program data during operation to perform the method as described in any one of claims 1-6.

8. The control device according to claim 7, characterized in that, The number of winding motors is at least two, and the frequency conversion drive circuit is used to drive the at least two winding motors by frequency conversion; and / or, the winding motors are asynchronous motors.

9. The control device according to claim 7, characterized in that, include: Human-computer interaction circuit, used to enable users to perform human-computer interaction operations; The second processor, coupled to the human-computer interaction circuit and the first processor, is used to perform data interaction with the first processor and the human-computer interaction circuit.

10. An integrated control system for a winding motor, characterized in that, include: Host computer; At least one control device according to any one of claims 7-9, each of the control devices being networked with the host computer, and each of the control devices being capable of data interaction with the host computer.

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