Driving control system of false twist texturing machine and false twist texturing machine

Abstract

The utility model discloses a driving control system of a false twist texturing machine and the false twist texturing machine. The system comprises an MCU control system, a communication system, a driving system, a motor system and an upper computer system, the motor system comprises any more than two of a false twister motor W6, a roller motor W1, a roller motor W2 and a roller motor W2X, the driving system comprises driving modules and current sampling circuits, the number of the driving modules is the same as that of the motors, each driving module is connected with one motor, and all the driving modules are connected with the MCU control system; motor rotating speed and torque fluctuation information is converted into voltage fluctuation in a current form through a sampling circuit of the driving system and then is transmitted to the MCU control system; the MCU control system processes the data of each motor to obtain data reflecting the tension change of the silk thread, and the upper computer system fits a silk thread tension change curve according to the data. According to the utility model, a tension measuring device does not need to be additionally arranged, and several roller devices at the same spindle position can be driven at different speeds.

Description

Technical Field

[0001] This utility model relates to the control technology of false twisting texturing machines, specifically to a drive control system for a false twisting texturing machine and a false twisting texturing machine. Background Technology

[0002] A texturing machine, also known as a false-twist texturer, is a device that processes POY (polyester nylon) filaments into low-elasticity textured yarn (DTY). The typical process flow is as follows: the filaments enter the first roller (W1 roller) of the feeding device, the upper heat box texturing device, the false-twist device (W6 false twister), the second roller (W2 roller) of the drafting device, the second auxiliary roller (W2X roller) of the drafting device, the lower heat box setting device, the third roller (W3 roller) of the drafting device, and finally the winding device (W4) before being wound onto a bobbin for shaping. A traditional texturing machine consists of 10-16 sections, each section divided into two sides, A and B, with 12 spinning spindles on each side. This means side A has 120-192 spindles, and side B has the same number, resulting in a total of 240-384 spindles for the entire machine.

[0003] like Figure 1 As shown, taking the A-side of a 240-spindle texturing machine as an example, each process unit, such as the W1 roller unit, typically has each spindle driven by a single small motor. The 120 spindles on side A are driven by 120 small motors, and the control device for these 120 small motors is controlled by a single frequency converter. Therefore, the transmission speed of the W1 roller unit across the 120 spindles on side A is consistent. Similarly, the speeds of the W6 false twister unit, W2 roller unit, W2X roller unit, and W3 roller unit across the 120 spindles on side A are also each driven by a single frequency converter, thus their transmission speeds are also consistent. This consistent transmission speed across each roller dictates that during spinning, the spinning process on each of the 240 spindles must be consistent, and the type of yarn spun must also be consistent, meaning only a single type of yarn can be spun.

[0004] In summary, existing traditional texturing equipment has the following shortcomings: Because the transmission and drive systems of traditional texturing equipment are typically designed as single-sided integral drives, each machine has separate drives for sides A and B, and can only spin a maximum of two different types of yarn simultaneously during spinning. Furthermore, to produce high-quality texturing yarn, a tension testing device is required to monitor the tension fluctuations of the yarn during spinning. Based on these fluctuations, the drive speeds of W1, W2, W2X, and W6 must be manually adjusted to meet the spinning requirements. Summary of the Invention

[0005] Purpose of the invention: One purpose of this invention is to provide a drive control system for a false twist texturer that does not require the installation of a separate tension measuring device and can simultaneously drive several roller devices (including roller W1, false twister W6, roller W2, and roller W2X) at different speeds at the same spindle position; another purpose of this invention is to provide a false twist texturer that can enable each spindle position to weave yarn using a specific process according to spinning requirements.

[0006] Technical solution: The present invention provides a drive control system for a false twisting texturing machine, comprising an MCU control system, a communication system, a drive system, a motor system, and a power supply system;

[0007] The motor system includes any two or more motors selected from the following: false twist motor W6, roller motor W1, roller motor W2, and roller motor W2X. The drive system includes the same number of drive modules and the same number of current sampling circuits as the motors. Each motor in the motor system is connected to one drive module, and all drive modules are also connected to an MCU control system. The drive system is connected to a host computer system via a communication system. Each motor in the motor system is connected to the MCU control system via a current sampling circuit.

[0008] The speed and torque fluctuation information of each motor in the motor system is converted into voltage fluctuations in the form of current through the corresponding current sampling circuit and then transmitted to the MCU control system.

[0009] The MCU control system processes the data from the false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X to obtain data reflecting the changes in yarn tension. The host computer system then fits the yarn tension change curve based on the data reflecting the changes in yarn tension.

[0010] Furthermore, the MCU control system includes a master control unit MCU1 and a slave control unit MCU2, which communicate with each other via an SPI bus.

[0011] Furthermore, the first and second drive modules are both connected to the main control unit MCU1, and the third and fourth drive modules are both connected to the slave control unit MCU2.

[0012] Furthermore, an external crystal oscillator circuit is connected between pins 12 and 13 of the main control unit MCU1;

[0013] The external crystal oscillator circuit includes capacitors C206 and C207 and an external crystal oscillator X201. One end of capacitor C206 is grounded, and the other end is connected to pin 12 of the main control unit MCU1 and pin 1 of the external crystal oscillator X201. One end of capacitor C207 is grounded, and the other end is connected to pin 13 of the main control chip CPU1 and pin 3 of the external crystal oscillator X201.

[0014] Furthermore, the communication system includes CAN communication and RS485 communication. CAN communication is used for communication between the main control unit MCU1 and the host computer system, and RS485 communication is a reserved communication port.

[0015] Furthermore, the four drive modules in the drive system have the same structure. The first drive module includes a power module Q401. Pins 14, 10, 4, 16, 11, and 5 of the power module Q401 are all externally connected to RC filter circuits to filter out noise interference in the PWM control waveform issued by the MCU control system.

[0016] Furthermore, a bootstrap circuit is connected between pins 17 and 19, pins 21 and 22, and pins 24 and 25 of the power module Q401, and the three bootstrap circuits have the same structure.

[0017] The bootstrap circuit between pins 17 and 19 of the power module Q401 includes capacitors C409 and C410 connected in parallel and a Zener diode ZD402, wherein the Zener diode ZD402 is used to maintain a constant voltage across the load.

[0018] Furthermore, pins 20, 23, and 26 of the power module Q401 are all connected to a sampling resistor, and the other end of the sampling resistor is grounded.

[0019] A differential amplifier circuit is provided on the line between each sampling resistor and its corresponding pin. The differential amplifier circuit is used to amplify and filter the voltage drop across the sampling resistor before transmitting it to the MCU control system.

[0020] Furthermore, the false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X are all permanent magnet brushless DC motors;

[0021] The control of the false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X all adopts the FOC control algorithm without position sensors.

[0022] Based on the same inventive concept, the present invention provides a false twisting texturing machine, wherein each spindle position is equipped with a drive control system for the false twisting texturing machine; and a host computer system simultaneously controls the drive systems of multiple false twisting texturing machines.

[0023] Beneficial effects: Compared with the prior art, the significant technical effects of this utility model are as follows:

[0024] This invention allows for the simultaneous driving of several roller devices (including roller W1, roller W6 false twister, roller W2, and roller W2X) at different speeds at the same spindle position, depending on the type of chemical fiber filament being spun and the spinning process requirements. This enables each spindle position to spin different types of chemical fiber filaments according to spinning needs, without requiring a separate tension measuring device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the spinning drive in a false-twist texturing machine in the prior art.

[0026] Figure 2 This is a schematic diagram of the drive control system of a false twisting texturing machine disclosed in Embodiment 1 of this utility model;

[0027] Figure 3 The circuit diagram of the main control unit MCU1;

[0028] Figure 4 The circuit diagram of the external crystal oscillator circuit in the main control unit MCU1;

[0029] Figure 5 This is the circuit diagram of the first drive module;

[0030] Figure 6 This is a flowchart of the tension acquisition process;

[0031] Figure 7 This is a schematic diagram of the spinning drive of the false twist texturer disclosed in Embodiment 2 of this utility model. Detailed Implementation

[0032] The technical solution of this utility model will now be described in detail with reference to specific embodiments and accompanying drawings.

[0033] Example 1

[0034] like Figure 2As shown, the present invention discloses a drive control system for a false-twist texturing machine, comprising an MCU control system, a communication system, a drive system, a motor system, and a power supply system. The motor system includes any two or more motors selected from the following: false-twist motor W6, roller motor W1, roller motor W2, and roller motor W2X. Specifically, the scope of this patent is not limited to four motors; other combinations such as false-twist motor W6, roller motor W1, roller motor W2, or false-twist motor W6, roller motor W1, and roller motor W2X (three motors in total) are also included. Combinations of two motors, such as roller motor W2 and roller motor W2X, are also within the scope of this patent. The drive system includes drive modules and current sampling circuits equal to the number of motors. Each motor in the motor system is connected to one drive module, and all drive modules are also connected to the MCU control system. Each motor in the motor system is connected to the MCU control system through a current sampling circuit. The drive system is connected to a host computer system via the communication system. The speed and torque fluctuation information of each motor in the motor system is converted into voltage fluctuations in the form of current through the corresponding current sampling circuit and then transmitted to the MCU control system. After the MCU control system processes the data of each motor in the motor system, it obtains data reflecting the change in wire tension. The host computer system then fits the wire tension change curve based on the data reflecting the change in wire tension.

[0035] In this embodiment, the motor system includes a false twister motor W6, a roller motor W1, a roller motor W2, and a roller motor W2X. Correspondingly, the drive system includes four drive modules and four current sampling circuits. The first drive module is connected to the false twister motor W6, the second drive module is connected to the roller motor W1, the third drive module is connected to the roller motor W2, and the fourth drive module is connected to the roller motor W2X. The four drive modules are also connected to the MCU control system. The false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X are each connected to the MCU control system through a current sampling circuit.

[0036] The speed and torque fluctuation information of the false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X are converted into voltage fluctuations in the form of current through the corresponding current sampling circuit and then transmitted to the MCU control system. After processing the data of the false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X, the MCU control system obtains data reflecting the change in yarn tension. The host computer system fits the yarn tension change curve based on the data reflecting the change in yarn tension.

[0037] The communication system includes CAN communication and RS485 communication. CAN communication is used for communication between the main control unit MCU1 and the host computer system, while RS485 communication is a reserved communication port.

[0038] The power supply system consists of two parts: a DC-BUS and a switching power supply. The DC-BUS has rectification, voltage regulation, and PFC (power factor regulation) functions. The switching power supply outputs +24V, +15V, +5V, and +3.3V voltages to power each system.

[0039] The MCU control system is used to achieve communication and data transmission with the host computer, and to control motor speed, torque, and acquire tension. The MCU control system includes a master control unit MCU1 and a slave control unit MCU2, which communicate with each other via an SPI bus. The first and second drive modules are both connected to the master control unit MCU1, while the third and fourth drive modules are both connected to the slave control unit MCU2.

[0040] like Figure 3 As shown, the main control unit MCU1 mainly consists of a main control chip and peripheral circuitry. The model of the main control unit MCU1 is STM32G474VBT6, and an external crystal oscillator circuit is connected between pins 12 and 13 of the main control unit MCU1. Figure 4 As shown, the external crystal oscillator circuit includes capacitors C206 and C207, and an external crystal oscillator X201. One end of capacitor C206 is grounded, and the other end is connected to pin 12 of the main control unit MCU1 and pin 1 of the external crystal oscillator X201. One end of capacitor C207 is grounded, and the other end is connected to pin 13 of the main control unit MCU1 and pin 3 of the external crystal oscillator X201. A stable clock signal is generated through capacitor C207 and the external crystal oscillator X201.

[0041] The main control unit MCU1 is the core of the entire system, integrating functional modules such as CPU, memory (ROM, RAM), input / output interface (I / O port), timer, and interrupt system.

[0042] A 3.3V power supply circuit is connected between pin 23 (VSS) and pin 24 (VDD) of the main control unit MCU1. This 3.3V power supply circuit provides a stable power supply voltage to the main control unit MCU1, ensuring its normal operation. The 3.3V power supply circuit includes a filter capacitor, which is connected in parallel with the power supply pins (VSS and VDD) to filter out power supply noise and stabilize the power supply voltage.

[0043] The circuit connected to pin 14 (T_NRST) of the main control unit MCU1 is a reset circuit. This reset circuit includes capacitor C208, with one end grounded and the other end connected to pin 14 of the main control unit MCU1. The reset circuit initializes the microcontroller's state, ensuring it functions correctly during startup or in abnormal situations.

[0044] Pins 37 (VDDA) and 35 (VSSA) of the main control unit MCU1 are dedicated power and ground pins for the analog circuit section of the chip. Their presence helps improve the accuracy and stability of analog signals, while reducing the interference of digital circuit noise on analog circuits.

[0045] Since the external circuit of the slave control unit MCU2 is basically the same as that of the master control unit MCU1, the external circuit of the slave control unit MCU2 will not be described in detail here.

[0046] like Figure 5 As shown, the four drive modules in the drive system have identical structures. The first drive module mainly consists of a power module Q401, an operational amplifier circuit, and its peripheral circuits. It also includes overheat protection, overcurrent protection, and other circuits to realize the motor drive function and provide necessary protection measures. The power module Q401 converts the input electrical energy into the AC form required to drive the motor and amplifies the control signal to drive the motor. It uses PWM technology to adjust the pulse duty cycle and achieves high-efficiency conversion and precise power control through switching devices (such as MOSFETs / IGBTs). It has built-in overcurrent, overtemperature, and short-circuit protection functions, and automatically adjusts the output or cuts off the circuit by monitoring the current / voltage parameters in real time to ensure system safety. In this embodiment, the power module Q401 is model STGIPQSC60T-HZ. The operational amplifier is used to amplify the weak voltage signal collected by the sampling resistor with high precision to ensure that the input signal of the control system meets the processing requirements. At the same time, it suppresses common-mode noise and improves the signal-to-noise ratio through differential amplification.

[0047] Pins 14, 10, 4, 16, 11, and 5 of the power module Q401 are all connected to external RC filter circuits (composed of resistors and capacitors connected in series) to filter out noise interference in the PWM control waveform sent by the MCU control system. Pins 14 (PWM_UH), 10 (PWM_VH), 4 (PWM_WH), 16 (PWM_UL), 11 (PWM_VL), and 5 (PWM_WL) of the power module Q401 are used to receive the PWM control waveform sent by the MCU, using high-frequency switching technology to precisely control the voltage and current waveforms and optimize motor efficiency. The resistors and capacitors on these pins serve as filters and current limiters.

[0048] Pin 12, CIN, of the power module Q401 is connected to an overcurrent protection circuit. The overcurrent protection circuit is used to monitor the current status in real time and perform protection actions when there is an abnormality.

[0049] The circuits connected to pins 2 and 15 of the power module Q401 are used in conjunction with the internal protection circuits (such as over-temperature and under-voltage lockout) to achieve multiple protections and ensure that the module can be reliably shut down in complex fault scenarios.

[0050] A bootstrap circuit is connected between pins 17 and 19, pins 21 and 22, and pins 24 and 25 of the power module Q401. These three bootstrap circuits have identical structures. The bootstrap circuit between pins 17 and 19 of the power module Q401 includes capacitors C409 and C410 connected in parallel, and a Zener diode ZD402. The Zener diode ZD402 maintains a constant voltage across the load, preventing component damage due to circuit malfunctions. Capacitors C409 and C410 power the upper transistor drive circuit and both serve bootstrap and filtering functions, preventing insufficient drive voltage due to grounding issues. The Zener diode ZD402 is a TZMC18.

[0051] Pins 20, 23, and 26 of the power module Q401 are each connected to a sampling resistor, with the other end of the sampling resistor grounded. A differential amplifier circuit is installed on the line between each sampling resistor and its corresponding pin. The differential amplifier circuit amplifies and filters the voltage drop across the sampling resistor before transmitting it to the MCU control system. Sampling resistor R419 is connected in series between pin 26 (NW) of the power module Q401 and power ground; sampling resistor R420 is connected in series between pin 23 (NV) of the power module Q401 and power ground; and sampling resistor R421 is connected in series between pin 20 (NU) of the power module Q401 and power ground.

[0052] A differential amplifier circuit is installed on the line between sampling resistor R420 and pin NV of power module Q401, the line between sampling resistor R419 and pin NW of power module Q401, and the line between sampling resistor R421 and pin NU of power module Q401.

[0053] The voltage drops across sampling resistors R419, R420, and R421 are amplified by a differential amplifier circuit, filtered, and then sent to the ADC module of the MCU control system to be converted into digital signals. To minimize noise interference, an RC filter circuit is set at the output of each operational amplifier in the differential amplifier circuit.

[0054] In this embodiment, the false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X are all permanent magnet brushless DC motors. The control of the false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X all adopts a sensorless FOC control algorithm.

[0055] The motor control method is as follows: This solution uses a permanent magnet brushless DC motor and adopts sensorless control technology, combined with FOC control algorithm, to ensure that the motor can operate efficiently and stably.

[0056] Field Oriented Control (FOC) is an advanced technology for motor control. Its core principle is to transform the control problem of a three-phase AC motor into a control problem similar to that of a DC motor through mathematical transformation, thereby achieving independent control of the motor torque and magnetic field. The following are the main contents of the FOC control principle: (1) Objective: The main objective of FOC is to decompose the stator current into two independent components, namely the direct-axis current (Id) and the quadrature-axis current (Iq). The direct-axis current (Id) is used to control the magnetic field, and the quadrature-axis current (Iq) is used to control the torque. In this way, FOC can achieve precise control of the motor torque and magnetic field, thereby improving the efficiency and dynamic performance of the motor; (2) Coordinate transformation: The core of FOC is to transform the three-phase AC system into a two-phase DC system through mathematical transformation. It mainly involves the following two transformations: Clarke transformation: transforming the three-phase current (Ia, Ib, Ic) into the current (Iα, Iβ) in the two-phase stationary coordinate system; Park transformation: further transforming the current in the two-phase stationary coordinate system into the direct-axis current (Id) and the quadrature-axis current (Iq) in the rotating coordinate system. These transformations make the motor control no longer dependent on the motor's rotational speed, but based on a fixed reference coordinate system, thus simplifying the control logic; (3) Current control: In the rotating coordinate system, the FOC adjusts the direct-axis current (Id) and quadrature-axis current (Iq) respectively through two independent PI controllers: Id control: Id is usually set to 0 (or set to a negative value in field weakening control) to maximize the torque-to-current ratio; Iq control: The magnitude of Iq is adjusted according to the required torque. In this way, the FOC can achieve precise control of the motor torque and maintain optimal performance under different load conditions; (4) Inverse transformation and PWM drive: Id and Iq after being adjusted by the PI controller need to be converted back to three-phase current through inverse transformation (Park inverse transformation and Clarke inverse transformation), and finally drive the inverter through the PWM signal.

[0057] The advantages of FOC are as follows: High dynamic response: Precise torque control, suitable for frequent start-stop or speed change scenarios. High efficiency: Reduces copper losses by minimizing Id, improving energy efficiency. Excellent low-speed performance: Can operate stably at extremely low speeds or even zero speed. Low noise / vibration: Smooth torque output reduces mechanical stress.

[0058] The host computer system consists of a host computer and a CANbus. The CANbus is used to enable communication between the driver board and the host computer. The host computer is used to send control commands and display information such as motor speed, torque, tension, and temperature. It supports setting the motor speed on different driver boards individually or in batches to meet diverse production process requirements.

[0059] During the wire drawing process of a false-twist texturing machine, the tension of the wire fluctuates within a certain range. This fluctuation is reflected in the changes in motor torque and speed. These changes in torque and speed are converted into voltage fluctuations in the form of current through a sampling circuit and fed back to the MCU control system. The MCU control system digitizes the collected voltage signals using an ADC. Specifically, the control unit MCU2 transmits data from roller motors W2 and W2X to the main control unit MCU1 via the SPI bus. The main control unit MCU1 processes the data from roller motors W1 and W6, along with the data from roller motors W2 and W2X transmitted from control unit MCU2, using an algorithm to obtain data related to the wire tension changes. The main control unit MCU1 transmits this data to the host computer via the CAN communication system. The host computer can then fit a wire tension change curve based on this data. By examining the wire tension change curve, the quality of the wire drawing can be determined. This method replaces the detection of wire tension changes with motor detection, eliminating the need for a tension meter and saving machine costs.

[0060] The tension acquisition process of this utility model is as follows: Figure 6 As shown, the speed and torque fluctuation information of the false twister motor W6 and roller motor W1 are converted into voltage fluctuations in the form of current through the corresponding current sampling circuit and then transmitted to the main control unit MCU1. The speed and torque fluctuation information of roller motor W2 and roller motor W2X are converted into voltage fluctuations in the form of current through the corresponding current sampling circuit and then transmitted to the slave control unit MCU2. The slave control unit MCU2 transmits the data of roller motor W2 and roller motor W2X to the main control unit MCU1 through the SPI bus. After processing the data of false twister motor W6, roller motor W1, roller motor W2 and roller motor W2X, the main control unit MCU1 obtains data reflecting the change of yarn tension. The host computer system fits the yarn tension change curve based on the data reflecting the change of yarn tension.

[0061] The drive system of this invention's false-twist texturing machine can simultaneously drive several roller devices at the same spindle position at different speeds, including roller W1, false twister W6, roller W2, and roller W2X, according to the type of chemical fiber filament being spun and the spinning process requirements. In this way, each spindle position can spin yarns using a specific process according to the spinning requirements.

[0062] Example 2

[0063] like Figure 7As shown, the false-twist texturing machine of this invention has a drive control system for the false-twist texturing machine described in Embodiment 1 installed on each spindle. Multiple drive control systems for false-twist texturing machines are simultaneously controlled by a host computer system. In this way, each spindle can spin different types of chemical fibers according to spinning requirements. This invention differs from traditional texturing machines where several zones and spindles share the same roller and are driven by the same frequency converter, resulting in a uniform rotation speed. In this invention, the rotation speed of a single spindle on the same roller can be independently driven and controlled.

Claims

1. A drive control system for a false twist texturing machine, characterized by: This includes the MCU control system, communication system, drive system, motor system, and power supply system. The motor system includes any two or more motors selected from the following: false twist motor W6, roller motor W1, roller motor W2, and roller motor W2X. The drive system includes the same number of drive modules and current sampling circuits as the number of motors. Each motor in the motor system is connected to one drive module, and all drive modules are also connected to the MCU control system. Each motor in the motor system is connected to the MCU control system through a current sampling circuit. The drive system is connected to a host computer system through a communication system. The speed and torque fluctuation information of each motor in the motor system is converted into voltage fluctuations in the form of current through the corresponding current sampling circuit and then transmitted to the MCU control system. The MCU control system processes the data of each motor in the motor system to obtain data reflecting the change in wire tension. The host computer system then fits the wire tension change curve based on the data reflecting the change in wire tension.

2. The driving control system of the false twist texturing machine according to claim 1, characterized in that: The MCU control system includes a master control unit MCU1 and a slave control unit MCU2, which communicate with each other via an SPI bus.

3. The drive control system for the false-twist texturing machine according to claim 2, characterized in that: The first and second drive modules in the drive system are both connected to the main control unit MCU1, and the third and fourth drive modules in the drive system are both connected to the slave control unit MCU2.

4. The drive control system of the false-twist texturing machine according to claim 2, characterized in that: An external crystal oscillator circuit is connected between pins 12 and 13 of the main control unit MCU1; The external crystal oscillator circuit includes capacitors C206 and C207 and an external crystal oscillator X201. One end of capacitor C206 is grounded, and the other end is connected to pin 12 of the main control unit MCU1 and pin 1 of the external crystal oscillator X201. One end of capacitor C207 is grounded, and the other end is connected to pin 13 of the main control chip CPU1 and pin 3 of the external crystal oscillator X201.

5. The drive control system for the false-twist texturing machine according to claim 2, characterized in that: The communication system includes CAN communication and RS485 communication. CAN communication is used for communication between the main control unit MCU1 and the host computer system, and RS485 communication is a reserved communication port.

6. The drive control system for the false-twist texturing machine according to claim 1, characterized in that: The four drive modules in the drive system have the same structure. The first drive module includes a power module Q401. Pins 14, 10, 4, 16, 11 and 5 of the power module Q401 are all connected to an external RC filter circuit to filter out noise interference in the PWM control waveform issued by the MCU control system.

7. The drive control system for the false-twist texturing machine according to claim 6, characterized in that: A bootstrap circuit is connected between pins 17 and 19, pins 21 and 22, and pins 24 and 25 of the power module Q401. The three bootstrap circuits have the same structure. The bootstrap circuit between pins 17 and 19 of the power module Q401 includes capacitors C409 and C410 connected in parallel and a Zener diode ZD402, wherein the Zener diode ZD402 is used to maintain a constant voltage across the load.

8. The drive control system for the false-twist texturing machine according to claim 6, characterized in that: Pins 20, 23, and 26 of the power module Q401 are each connected to a sampling resistor, and the other end of the sampling resistor is grounded. A differential amplifier circuit is provided on the line between each sampling resistor and its corresponding pin. The differential amplifier circuit is used to amplify and filter the voltage drop across the sampling resistor before transmitting it to the MCU control system.

9. The drive control system for the false-twist texturing machine according to claim 1, characterized in that: The false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X are all permanent magnet brushless DC motors; The control of the false twister motor W6, roller motor W1, roller motor W2, and roller motor W2X all adopts the FOC control algorithm without position sensors.

10. A false-twist texturing machine, characterized in that: Each spindle position of the false twisting machine is equipped with a drive control system for the false twisting machine as described in claim 1; a host computer system can simultaneously control the drive control systems of multiple false twisting machines.

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