Weft accumulator control system

Abstract

The utility model provides a weft accumulator control system which comprises a motor, a motor control board and an inductance type encoder. The motor comprises a stator and a rotor; the inductance type encoder comprises a stator plate and a rotor plate, and regular clad copper is arranged on the rotor plate; the stator plate is provided with a coil group, a signal conditioning circuit, a stator plate control module and a stator plate angle transmission and position correction module which are connected in sequence; the coil assembly comprises a stator plate excitation coil, a stator plate single-circle induction coil and a stator plate multi-circle induction coil; the motor control panel comprises an electronic control module and a motor driving module, and the electronic control module is connected with the stator plate angle transmission and position correction module to obtain angle information and position correction information of the rotor plate; the motor driving module is connected with a stator of the motor; and the motor control panel corrects the position of the motor according to the position correction information, and controls the operation of the motor according to the angle information of the rotor plate.

Description

Technical Field

[0001] This utility model belongs to the field of weft feeder control technology, and in particular relates to a weft feeder control system. Background Technology

[0002] Current electronic weft feeders are driven by a motor, which in turn drives the yarn winding assembly to wind and store yarn, and actively or passively releases the weft yarn to maintain a certain amount of weft yarn on the storage drum for continuous or intermittent weft insertion by looms and other weft insertion devices. Motor position detection is generally achieved through sensorless algorithm control, Hall effect position sensors, photoelectric encoders, or magnetic induction encoders. Sensorless algorithms and Hall effect position sensors have poor control response and large speed fluctuations at low speeds; photoelectric encoders offer high accuracy and fast response, but are easily affected by dust and oil contamination; the weft feeder system uses a hollow shaft motor, which cannot be well sealed, affecting the stability of photoelectric encoders; magnetic induction encoders have various solutions, but low-cost applications on hollow shafts are not yet mature, and their response is insufficient at high speeds, limiting their application in weft feeders.

[0003] Inductive encoders are currently used in applications such as motors and articulated motors. However, they are mostly stand-alone encoders, which feed back the detected position signal to the control system via pulses or communication. This lack of signal conditioning tailored to the specific application scenario affects detection accuracy and stability.

[0004] Therefore, it is necessary to provide a weft feeder control system to improve response speed, detection accuracy, and stability. Utility Model Content

[0005] This invention provides a weft feeder control system that improves response speed, detection accuracy, and stability.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] A weft feeder control system includes a motor, a motor control board, and an inductive encoder;

[0008] The motor includes a stator and a rotor;

[0009] The inductive encoder includes a stator board and a rotor board, with regular copper plating on the rotor board; the stator board has a coil group, a signal conditioning circuit, a stator board control module, and a stator board angle transmission and position correction module connected in sequence; the coil group includes a stator board excitation coil, a stator board single-turn induction coil, and a stator board multi-turn induction coil.

[0010] The motor control board includes an electronic control module and a motor drive module. The electronic control module is connected to the stator plate angle transmission and position correction module to obtain the rotor plate angle information and position correction information. The motor drive module is connected to the stator of the motor. The motor control board corrects the position of the motor according to the position correction information and controls the operation of the motor according to the rotor plate angle information.

[0011] Preferably, the signal conditioning circuit includes an output signal conditioning unit and an input signal conditioning unit. The output signal conditioning unit is connected to the stator plate excitation coil and adjusts the excitation signal output to the stator plate excitation coil. The input signal conditioning unit is multi-channel, and the multiple input signal conditioning units are respectively connected to the stator plate single-turn induction coil and the stator plate multi-turn induction coil to perform signal conditioning on the induction signals input to the input signal conditioning unit.

[0012] Preferably, the stator plate multi-turn induction coil has N turns, and the stator plate single-turn induction coil has 1 turn. The stator plate excitation coil receives the excitation signal output by the output signal conditioning unit to generate a magnetic field. When the motor is running, the rotor plate rotates with the shaft and cuts the magnetic field of the stator plate excitation coil, causing the stator plate multi-turn induction coil and the stator plate single-turn induction coil to generate sine / cosine signal induction signals. When the rotor plate rotates one revolution, the stator plate multi-turn induction coil senses N cycles of sine / cosine signals as angle sensing signals, and the stator plate single-turn induction coil senses one cycle of sine / cosine signals as absolute position reference signals.

[0013] Preferably, the input signal conditioning unit conditions the input angle sensing signal and absolute position reference signal and then sends them to the stator board control module. The stator board control module decodes the conditioned angle sensing signal and absolute position reference signal into rotor angle information and absolute zero position information and sends them to the stator board angle transmission and position correction module.

[0014] Preferably, the output signal conditioning unit includes a resistor R. 23 Capacitor C 10 Amplifier U 5B Transistor Q6 and resistor R2, wherein resistor R 23 The positive terminal is connected to the stator board control module, and the resistor R 23 The negative terminal is connected to the amplifier U. 5B The input negative terminal, the capacitor C 10 The positive terminal is connected to the resistor R. 23 The negative terminal of the capacitor C 10 The negative terminal of the amplifier U is grounded; 5BThe positive input terminal is connected to the collector of the transistor Q6, and the amplifier U 5B The output terminal of the transistor is connected to the base of the transistor Q6; the collector of the transistor Q6 is connected to the positive terminal of the stator plate excitation coil after being connected to the resistor R2; and the emitter of the transistor Q6 is connected to the power supply V. ref The negative terminal of the stator plate excitation coil is connected to the stator plate control module.

[0015] Preferably, one of the input signal conditioning units connected to the single-turn induction coil of the stator plate includes resistor R3, resistor R4, capacitor C2, and resistor R. 11 Comparator U 1B Digital potentiometer R 15 Resistance R 19 With capacitor C6, resistor R3 is connected to the positive terminal of the single-turn induction coil on the stator plate and comparator U. 1B The positive input terminal is connected to the resistor R4, which is connected to the negative terminal of the single-turn induction coil on the stator plate and the comparator U. 1B The input negative terminal; the capacitor C2 is connected to the comparator U. 1B The positive input terminal and the comparator U 1B The input negative terminal; the resistor R 11 The positive terminal is connected to the comparator U. 1B The input positive terminal, the resistor R 11 The negative terminal of the comparator is grounded; 1B The output terminal is connected in series with a resistor R 19 The digital potentiometer R is then connected to the stator board control module. 15 The two ends are respectively connected to the comparator U 1B The negative input terminal and the comparator U 1B The output terminal of the digital potentiometer R 15 The adjustment terminal is connected to the stator board control module; the positive terminal of the capacitor C6 is connected to the resistor R. 19 The negative terminal of capacitor C6 is grounded.

[0016] Preferably, the stator board control module includes at least a signal processing chip U1, and the output signal conditioning unit and the multiple input signal conditioning units of the signal conditioning circuit are all connected to the signal processing chip U1.

[0017] Preferably, the stator plate angle transmission and position correction module includes at least a signal processing chip U2, a resistor R1, and a resistor R. 24 Transistor Q1, Resistor R 25 Resistance R 26The signal processing chip U2 connects to the stator board control module and the electronic control module for data interaction, along with transistor Q9. The positive terminal of resistor R1 is connected to the electronic control module, and the negative terminal of resistor R1 is connected to the base of transistor Q1. The collector of transistor Q1 is connected to the stator board control module, and the emitter of transistor Q1 is grounded. The resistor R... 24 Connect the base and emitter of transistor Q1; the resistor R 25 The positive terminal is connected to the stator board control module, and the resistor R 25 The negative terminal is connected to the base of transistor Q9, the collector of transistor Q9 is connected to the electronic control module, the emitter of transistor Q9 is grounded, and the resistor R... 26 Connect the base of transistor Q9 and the emitter of transistor Q9.

[0018] Preferably, the electronic control module includes at least a signal processing chip U3, and the motor drive module includes at least a three-phase drive unit. The three-phase drive units are respectively connected to the stator of the motor and the electronic control module. One phase of the drive unit includes at least a semiconductor power device Q2 and a semiconductor power device Q3. The base of the semiconductor power device Q2 and the base of the semiconductor power device Q3 are respectively connected to the electronic control module. The emitter of the semiconductor power device Q2 and the collector of the semiconductor power device Q3 are connected and then connected to the stator of the motor. The collector of the semiconductor power device Q2 and the emitter of the semiconductor power device Q3 are respectively connected to the positive and negative terminals of the capacitor C1.

[0019] Compared with the prior art, the technical solution of this utility model embodiment has beneficial effects.

[0020] For example, the weft feeder control system provided by this utility model adopts an inductive encoder. The stator plate of the inductive encoder is equipped with a coil group, a signal conditioning circuit, a stator plate control module, and a stator plate angle transmission and position correction module connected in sequence. In conjunction with the motor control board, it realizes functions such as controlling motor rotation, acquiring and correcting inductive signals, zero-position positioning and setting, and zero-position verification and testing. It has high detection accuracy and fast response, improving the operation control accuracy and response speed of the weft feeder system and meeting the needs of rapid response in special applications. The inductive encoder is not affected by dust and oil, has strong anti-interference ability, and is suitable for the through-shaft application of the weft feeder, solving the problem of photoelectric encoders being affected by dust. Attached Figure Description

[0021] Figure 1 This is a front view of the weft feeder control system in an embodiment of this utility model;

[0022] Figure 2This is a structural diagram of the weft feeder control system in an embodiment of this utility model;

[0023] Figure 3 This is an exploded view of the weft feeder control system in an embodiment of this utility model;

[0024] Figure 4 This is a partial cross-sectional view of the weft feeder control system in an embodiment of this utility model;

[0025] Figure 5 This is a control principle diagram of the weft feeder control system in an embodiment of this utility model;

[0026] Figure 6 This is a control circuit diagram of the weft feeder control system in an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Shaft; 2-Rotor base; 3-Rotor plate; 4-Stator plate; 5-Encoder cover; 6-Motor control board; 7-Control board cover; 10-Stator plate bracket; 11-Housing; 12-Rotor; 13-Stator;

[0029] A1 - Stator board excitation coil; A2 - Copper cladding; BS1 - Stator board single-turn induction coil; BN1 - Stator board multi-turn induction coil; C3 - Electronic control module; C4 - Motor drive module; D1 - Stator board control module; D2 - Signal conditioning circuit; D3 - Stator board angle transmission and position correction module. Detailed Implementation

[0030] To make the objectives, features, and beneficial effects of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described below are merely for explaining this utility model and are not intended to limit it. Furthermore, the same or similar reference numerals may be used in the drawings to refer to the same or similar elements in different embodiments, and descriptions of the same or similar elements in different embodiments, as well as descriptions of prior art elements, features, effects, etc., may be omitted.

[0031] Reference Figures 1 to 6 The weft feeder control system includes a motor, a motor control board 6 and an inductive encoder installed in the housing 11. The housing 11 has a motor chamber in the middle and a control chamber at the top. The inductive encoder is installed at the tail of the housing 11.

[0032] The motor includes a stator 13 and a rotor 12. The stator 13 is disposed close to the inner wall of the motor chamber and has a cavity that extends through the axis. The rotor 12 is rotatably disposed in the cavity, and the shaft 1 of the rotor 12 extends out from the tail of the housing 11.

[0033] The inductive encoder includes a stator plate 4 and a rotor plate 3. The rotor plate 3 is fixed to the part of the shaft 1 that extends out of the tail of the housing 11. The stator plate 4 is fixed to the tail of the housing 11 and is arranged opposite to the rotor plate 3. The rotor plate 3 is provided with a regular copper plating A2. The stator plate 4 is provided with a coil group, a signal conditioning circuit D2, a stator plate control module D1, and a stator plate angle transmission and position correction module D3 connected in sequence. The coil group includes a stator plate excitation coil A1, a stator plate single-turn induction coil BS1, and a stator plate multi-turn induction coil BN1.

[0034] The motor control board 6 includes an electronic control module C3 and a motor drive module C4. The electronic control module C3 is connected to the stator plate angle transmission and position correction module D3 to obtain the angle information and position correction information of the rotor plate 3. The motor drive module C4 is connected to the stator 13 of the motor. The motor control board 6 corrects the position of the motor according to the position correction information and controls the operation of the motor according to the angle information of the rotor plate 3.

[0035] Specifically, the rotor plate 3 is fixed to the rotating shaft 1 via the rotor seat 2, and the rotor plate 3 is clamped and fixed to the rotor seat 2.

[0036] Specifically, the stator plate 4 is fixed to the tail of the housing 11 by the stator plate bracket 10.

[0037] Specifically, the rear of the housing 11 is provided with an encoder cover 5, which covers the stator plate 4 and allows the rotating shaft 1 to pass through. The rotating shaft 1 has a hollow structure that allows the weft yarn to pass through.

[0038] Specifically, a control panel cover 7 is provided on the top of the housing 11, which encloses the control chamber 11-2.

[0039] In some embodiments, the signal conditioning circuit D2 includes an output signal conditioning unit and an input signal conditioning unit. The output signal conditioning unit is connected to the stator plate excitation coil A1 and adjusts the excitation signal output to the stator plate excitation coil A1. The input signal conditioning unit is multi-channel, and the multi-channel input signal conditioning unit is connected to the stator plate single-turn induction coil BS1 and the stator plate multi-turn induction coil BN1 respectively to perform signal conditioning on the induction signals input to the input signal conditioning unit.

[0040] In some embodiments, the stator plate multi-turn induction coil BN1 has N turns, and the stator plate single-turn induction coil BS1 has 1 turn. The stator plate excitation coil A1 receives the excitation signal output by the output signal conditioning unit to generate a magnetic field. When the motor is running, the rotor plate 3 rotates with the shaft 1 and cuts the magnetic field of the stator plate excitation coil A1, causing the stator plate multi-turn induction coil BN1 and the stator plate single-turn induction coil BS1 to generate sine / cosine signal induction signals. When the rotor plate 3 rotates one revolution, the stator plate multi-turn induction coil BN1 senses N cycles of sine / cosine signals as angle sensing signals, and the stator plate single-turn induction coil BS1 senses 1 cycle of sine / cosine signals as absolute position reference signals. The input signal conditioning unit conditions the input angle sensing signals and absolute position reference signals and sends them to the stator plate control module D1. The stator plate control module D1 decodes and calculates the conditioned angle sensing signals and absolute position reference signals into rotor angle information and absolute zero position information and sends them to the stator plate angle transmission and position correction module D3.

[0041] In some embodiments, the output signal conditioning unit includes a resistor R 23 Capacitor C 10 Amplifier U 5B Transistor Q6 and resistor R2, resistor R 23 The positive terminal is connected to the stator board control module D1, and the resistor R 23 The negative terminal of the amplifier U is connected. 5B The input negative terminal, capacitor C 10 The positive terminal is connected to the resistor R. 23 The negative terminal, capacitor C 10 The negative terminal of amplifier U is grounded; 5B The positive input terminal is connected to the collector of transistor Q6, and amplifier U... 5B The output terminal of transistor Q6 is connected to the base of transistor Q6; the collector of transistor Q6 is connected to the positive terminal of the excitation coil A1 on the stator plate via resistor R2; and the emitter of transistor Q6 is connected to the power supply V. ref The negative terminal of the stator plate excitation coil A1 is connected to the stator plate control module D1.

[0042] In some embodiments, the input signal conditioning unit connected to the single-turn induction coil BS1 on the stator plate includes resistor R3, resistor R4, capacitor C2, and resistor R. 11 Comparator U 1B Digital potentiometer R 15 Resistance R 19 The capacitor C6 and resistor R3 are connected to the positive terminal of the single-turn induction coil BS1 on the stator plate and the comparator U. 1B The positive input terminal is connected to resistor R4, which is connected to the negative terminal of the single-turn induction coil BS1 on the stator plate and comparator U. 1B The input negative terminal; capacitor C2 is connected to comparator U. 1BThe positive input and comparator U 1B The input negative terminal; resistor R 11 The positive terminal is connected to the comparator U. 1B The positive input terminal, resistor R 11 The negative terminal is grounded; comparator U 1B The output terminal is connected in series with a resistor R 19 The stator board control module D1 is then connected, along with the digital potentiometer R. 15 The two ends are respectively connected to comparator U 1B The input negative terminal and comparator U 1B The output terminal of the digital potentiometer R 15 The adjustment terminal is connected to the stator board control module D1; the positive terminal of capacitor C6 is connected to resistor R. 19 The negative terminal of capacitor C6 is grounded.

[0043] Similarly, the input signal conditioning unit connected to the multi-turn induction coil BN1 on the stator board includes resistor R7, resistor R8, capacitor C4, and resistor R. 13 Comparator U 3B Digital potentiometer R 17 Resistance R 21 The connection method and principle of capacitor C8 are the same as those of the input signal conditioning unit connected to the single-turn induction coil BS1 on the stator board. The other input signal conditioning units have similar components and the same connection method and principle, which will not be described in detail here.

[0044] In some embodiments, the stator board control module D1 includes at least a signal processing chip U1, and the output signal conditioning unit and the multiple input signal conditioning unit of the signal conditioning circuit D2 are both connected to the signal processing chip U1.

[0045] In some embodiments, the stator plate angle transmission and position correction module D3 includes at least a signal processing chip U2, a resistor R1, and a resistor R. 24 Transistor Q1, Resistor R 25 Resistance R 26 Transistor Q9 and signal processing chip U2 are connected to stator board control module D1 and electronic control module C3 for data exchange; the positive terminal of resistor R1 is connected to electronic control module C3, the negative terminal of resistor R1 is connected to the base of transistor Q1, the collector of transistor Q1 is connected to stator board control module D1, and the emitter of transistor Q1 is grounded. 24 Connect the base and emitter of transistor Q1; resistor R 25 The positive terminal is connected to the stator board control module D1, and the resistor R 25 The negative terminal of transistor Q9 is connected to the base of transistor Q9, the collector of transistor Q9 is connected to the electronic control module C3, the emitter of transistor Q9 is grounded, and the resistor R... 26Connect the base and emitter of transistor Q9.

[0046] In some embodiments, the electronic control module C3 includes at least a signal processing chip U3, and the motor drive module C4 includes at least a three-phase drive unit. The three-phase drive unit is connected to the stator 13 of the motor and the electronic control module C3 respectively. One phase drive unit includes at least a semiconductor power device Q2 and a semiconductor power device Q3. The base of semiconductor power device Q2 and the base of semiconductor power device Q3 are connected to the electronic control module C3 respectively. The emitter of semiconductor power device Q2 and the collector of semiconductor power device Q3 are connected and then connected to the stator of the motor. The collector of semiconductor power device Q2 and the emitter of semiconductor power device Q3 are connected to the positive and negative terminals of capacitor C1 respectively.

[0047] Similarly, the additional phase drive unit includes at least semiconductor power devices Q4, Q5, Q7, and Q8. The connection methods of semiconductor power devices Q4 and Q5, as well as the connection methods of semiconductor power devices Q7 and Q8, are the same as those of semiconductor power devices Q2 and Q3, and will not be described again here.

[0048] Specifically, semiconductor power devices can be IGBTs (Insulated Gate Bipolar Transistors) with freewheeling diodes or MOSFETs (Insulated Gate Field Effect Transistors) with freewheeling diodes.

[0049] Specifically, the gain of the output signal conditioning unit is adjusted by adjusting the voltage value of the output signal conditioning unit from the stator board control module D1 to the signal conditioning circuit D2.

[0050] In some embodiments, each of the multi-input signal conditioning units is equipped with a digital potentiometer, which is connected to the electronic board control module. The gain of the multi-input signal conditioning unit can be adjusted by adjusting the digital potentiometer of the multi-input signal conditioning unit.

[0051] In summary, the weft feeder control system provided by this utility model adopts an inductive encoder. The stator plate 4 of the inductive encoder is equipped with a coil group, a signal conditioning circuit D2, a stator plate control module D1, and a stator plate angle transmission and position correction module D3 connected in sequence. In conjunction with the motor control board 7, it realizes functions such as controlling motor rotation, acquiring and correcting inductive signals, zero-position positioning and setting, and zero-position verification and testing. It has high detection accuracy and fast response, improving the operation control accuracy and response speed of the weft feeder system, and meeting the needs of rapid response in special applications. The inductive encoder is not affected by dust and oil, has strong anti-interference ability, and is suitable for the through-shaft application of the weft feeder, solving the problem of photoelectric encoders being affected by dust.

[0052] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of this utility model disclosure, even when only a single embodiment is described with respect to a particular feature. The feature examples provided in this utility model disclosure are intended to be illustrative and not limiting, unless otherwise stated. In practice, one or more technical features of the dependent claims may be combined with the technical features of the independent claims as needed and where technically feasible, and may be derived from the technical features of the respective independent claims in any suitable manner rather than solely by the specific combinations listed in the claims.

Claims

1. A weft feeder control system, characterized in that, Includes the motor, motor control board, and inductive encoder; The motor includes a stator and a rotor; The inductive encoder includes a stator board and a rotor board, with regular copper plating on the rotor board; the stator board has a coil group, a signal conditioning circuit, a stator board control module, and a stator board angle transmission and position correction module connected in sequence; the coil group includes a stator board excitation coil, a stator board single-turn induction coil, and a stator board multi-turn induction coil. The motor control board includes an electronic control module and a motor drive module. The electronic control module is connected to the stator plate angle transmission and position correction module to obtain the rotor plate angle information and position correction information. The motor drive module is connected to the stator of the motor. The motor control board corrects the position of the motor according to the position correction information and controls the operation of the motor according to the rotor plate angle information.

2. The weft feeder control system according to claim 1, characterized in that, The signal conditioning circuit includes an output signal conditioning unit and an input signal conditioning unit. The output signal conditioning unit is connected to the stator plate excitation coil and adjusts the excitation signal output to the stator plate excitation coil. The input signal conditioning unit is multi-channel, and the multiple input signal conditioning units are respectively connected to the stator plate single-turn induction coil and the stator plate multi-turn induction coil to perform signal conditioning on the induction signals input to the input signal conditioning unit.

3. The weft feeder control system according to claim 2, characterized in that, The stator plate multi-turn induction coil has N turns, and the stator plate single-turn induction coil has 1 turn. The stator plate excitation coil receives the excitation signal output by the output signal conditioning unit to generate a magnetic field. When the motor is running, the rotor plate rotates with the rotor and cuts the magnetic field of the stator plate excitation coil, so that the stator plate multi-turn induction coil and the stator plate single-turn induction coil generate sine / cosine signal induction signals. When the rotor plate rotates one revolution, the stator plate multi-turn induction coil senses N cycles of sine / cosine signals as angle sensing signals, and the stator plate single-turn induction coil senses one cycle of sine / cosine signals as absolute position reference signals.

4. The weft feeder control system according to claim 3, characterized in that, The input signal conditioning unit conditions the input angle sensing signal and absolute position reference signal and then sends them to the stator board control module. The stator board control module decodes the conditioned angle sensing signal and absolute position reference signal into rotor angle information and absolute zero position information and sends them to the stator board angle transmission and position correction module.

5. The weft feeder control system according to claim 2, characterized in that, The output signal conditioning unit includes a resistor R. 23 Capacitor C 10 Amplifier U 5B Transistor Q6 and resistor R2, wherein resistor R 23 The positive terminal is connected to the stator board control module, and the resistor R 23 The negative terminal is connected to the amplifier U. 5B The input negative terminal, the capacitor C 10 The positive terminal is connected to the resistor R. 23 The negative terminal of the capacitor C 10 The negative terminal of the amplifier U is grounded; 5B The positive input terminal is connected to the collector of the transistor Q6, and the amplifier U 5B The output terminal of the transistor is connected to the base of the transistor Q6; the collector of the transistor Q6 is connected to the positive terminal of the stator plate excitation coil after being connected to the resistor R2; and the emitter of the transistor Q6 is connected to the power supply V. ref The negative terminal of the stator plate excitation coil is connected to the stator plate control module.

6. The weft feeder control system according to claim 2, characterized in that, One of the input signal conditioning units connected to the single-turn induction coil of the stator plate includes resistor R3, resistor R4, capacitor C2, and resistor R. 11 Comparator U 1B Digital potentiometer R 15 Resistance R 19 With capacitor C6, resistor R3 is connected to the positive terminal of the single-turn induction coil on the stator plate and comparator U. 1B The input positive terminal is connected to the resistor R4, which is connected to the negative terminal of the single-turn induction coil on the stator plate and the comparator U. 1B The input negative terminal; the capacitor C2 is connected to the comparator U. 1B The positive input terminal and the comparator U 1B The input negative terminal; the resistor R 11 The positive terminal is connected to the comparator U. 1B The input positive terminal, the resistor R 11 The negative terminal of the comparator is grounded; 1B The output terminal is connected in series with a resistor R 19 The digital potentiometer R is then connected to the stator board control module. 15 The two ends are respectively connected to the comparator U 1B The negative input terminal and the comparator U 1B The output terminal of the digital potentiometer R 15 The adjustment terminal is connected to the stator board control module; the positive terminal of the capacitor C6 is connected to the resistor R. 19 The negative terminal of capacitor C6 is grounded.

7. The weft feeder control system according to claim 2, characterized in that, The stator board control module includes at least a signal processing chip U1, and the output signal conditioning unit and the multiple input signal conditioning units of the signal conditioning circuit are all connected to the signal processing chip U1.

8. The weft feeder control system according to claim 1, characterized in that, The stator plate angle transmission and position correction module includes at least a signal processing chip U2, a resistor R1, and a resistor R. 24 Transistor Q1, Resistor R 25 Resistance R 26 The signal processing chip U2 connects to the stator board control module and the electronic control module for data interaction, along with transistor Q9. The positive terminal of resistor R1 is connected to the electronic control module, and the negative terminal of resistor R1 is connected to the base of transistor Q1. The collector of transistor Q1 is connected to the stator board control module, and the emitter of transistor Q1 is grounded. The resistor R... 24 Connect the base and emitter of transistor Q1; the resistor R 25 The positive terminal is connected to the stator board control module, and the resistor R 25 The negative terminal is connected to the base of transistor Q9, the collector of transistor Q9 is connected to the electronic control module, the emitter of transistor Q9 is grounded, and the resistor R... 26 Connect the base of transistor Q9 and the emitter of transistor Q9.

9. The weft feeder control system according to claim 1, characterized in that, The electronic control module includes at least a signal processing chip U3, and the motor drive module includes at least a three-phase drive unit. The three-phase drive units are respectively connected to the stator of the motor and the electronic control module. One phase of the drive unit includes at least a semiconductor power device Q2 and a semiconductor power device Q3. The base of the semiconductor power device Q2 and the base of the semiconductor power device Q3 are respectively connected to the electronic control module. The emitter of the semiconductor power device Q2 and the collector of the semiconductor power device Q3 are connected and then connected to the stator of the motor. The collector of the semiconductor power device Q2 and the emitter of the semiconductor power device Q3 are respectively connected to the positive and negative terminals of the capacitor C1.

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