Synchronous double-servo control system for rotary needle shuttle

Abstract

The utility model discloses a rotary needle shuttle synchronous double servo control system, which comprises a control unit, a communication module, a power supply input module, a switch power supply module and a voltage detection module, and is characterized in that the control unit is used for synchronously and accurately coordinating and controlling two servo motors, the communication module is used for data exchange, and the power supply input module is connected with the switch power supply module. The control module is used for receiving instructions and feeding back system states, the power supply input module is used for providing basic power input support adaptive to a wide voltage range, the switching power supply module is used for converting alternating current input into multi-path stable direct current output, and the voltage detection module is used for accurately monitoring input voltage states in real time. The problems that a traditional rotating needle shuttle system is poor in interference resistance, insufficient in power management and the like are effectively solved, the complexity of the system is remarkably reduced through the compact circuit layout and the modular design, and the system is suitable for equipment upgrading in the fields of spinning, packaging and the like and has certain use value and popularization value.

Description

TECHNICAL FIELD

[0001] The utility model relates to servo control system technical field especially relates to a kind of rotary needle shuttle synchronous double servo control systems. BACKGROUND

[0002] Rotary needle shuttle system is as the core driving component in the industrial field such as textile machinery, packaging equipment, and its synchronous precision and running stability directly affect production efficiency and product quality;Traditional needle shuttle control system is mostly driven by single servo motor or mechanical linkage scheme, and there are the following technical defects:

[0003] 1、Industrial environment electromagnetic interference is complex, traditional analog signal transmission is susceptible to noise, leading to control command distortion or feedback delay;

[0004] 2、System relies on single power input, lacks voltage fluctuation real-time detection and protection mechanism, cannot detect ±15% voltage fluctuation, is easy to cause equipment failure due to overvoltage, undervoltage or transient power failure;

[0005] For the above problems, the prior art attempts to use discrete control chip, needs to additionally configure communication module and power supply circuit, leading to low system integration, difficult maintenance.In addition, the traditional servo drive circuit is insufficient in the analysis ability of high-frequency pulse signal, and it is difficult to meet the demand of microsecond-level synchronous precision for high-speed needle shuttle machine.

[0006] In view of the above, a kind of rotary needle shuttle synchronous double servo control system is needed to solve the deficiencies in the prior art.

[0007] It is suggested to supplement the defect analysis of at least one specific existing patent document. UTILITY MODEL CONTENT

[0008] In view of the deficiencies of the prior art, the utility model provides a kind of rotary needle shuttle synchronous double servo control system, to solve the above problems.

[0009] In order to achieve the above object, the utility model provides the following technical scheme: a kind of rotating needle shuttle synchronous double servo control system, including control unit, communication module, power input module, switching power module and voltage detection module, the control unit is used to synchronize accurate coordination control two servo motors, the communication module is used to carry out data exchange, receives instruction and feedback system state, the power input module is used to provide the basic power input support of wide voltage range adaptation, the switching power module is used to convert AC input into multiple stable DC output, the voltage detection module is used to real-time accurate monitoring input voltage state, the communication module, power input module, switching power module and voltage detection module are all connected with control unit. Through the circuit structure innovation of communication module, power input module and switching power module, effectively solve the problem that traditional rotating needle shuttle system is poor in anti-interference, power management is insufficient etc., its compact circuit layout and modular design significantly reduce system complexity, applicable to the equipment upgrading in the field such as textile, packaging.

[0010] Further, the voltage detection module includes resistance R58, resistance R59, resistance R60, resistance R61, resistance R61, resistance R63, resistance R65, operational amplifier U12B and capacitor C27, resistance R58, resistance R59, resistance R60, resistance R61, resistance R63 and resistance R65 are connected with operational amplifier U12B, and resistance R65 is also connected with capacitor C27.

[0011] Further, the switching power module includes chip U13, chip U14, chip U15, resistance R71, resistance R72, resistance R73, resistance R74, resistance R75, resistance R76, resistance R77, resistance R78, resistance R80, resistance R81, capacitor C30, capacitor C31, capacitor C32, capacitor C33, capacitor C34, capacitor C35, diode D11, diode D12, diode D13, diode D14, triode Q12 and transformer T1, resistance R71, resistance R72, resistance R74, resistance R75, resistance R76 and capacitor C30, capacitor C31 are connected with chip U13, resistance R74 is also connected with resistance R73, resistance R75 is also connected with triode Q12, triode Q1 is also connected with resistance R78, diode D11, resistance R77, capacitor C32, transformer T1.

[0012] Further, the power input module includes filter FB1, resistance R64, resistance R66, resistance R67, transistor Q11 and relay K1, the filter FB1 is connected with resistance R67, and the filter FB1 is used to connect three-phase AC power supply and suppress electromagnetic interference, and the transistor Q11 is used to turn on and off power output.

[0013] Further, the RS-485 bus of the communication module adopts differential signal transmission and is integrated with an isolation amplifier.

[0014] The utility model discloses the beneficial effect has: through communication module and the design of isolated power supply makes the system in the strong electromagnetic interference environment error rate is lower, and through EMC test, RS-485 bus is in 30V / m field intensity error rate <1*10 -9 , multiway isolated power supply and voltage detection circuit can trigger protection quickly when input voltage is abnormal, avoid servo motor out of control, and its compact circuit layout and modular design reduce the system complexity significantly, be applicable to the equipment upgrading of textile, packaging and other fields, have certain use value and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, below description in the drawing is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor intensity, can also obtain other drawings according to these drawings.

[0016] Figure 1 It is the system principle block diagram of the utility model.

[0017] Figure 2 It is the circuit structure schematic diagram of the voltage detection module of the utility model.

[0018] Figure 3 It is the circuit structure schematic diagram of the switching power supply module of the utility model.

[0019] Figure 4 It is the circuit structure schematic diagram of the power input module of the utility model. DETAILED DESCRIPTION

[0020] In order to facilitate understanding the utility model, below combining with the drawing and specific embodiment, the utility model is more detailedly explained.It needs to be explained that when element is expressed " fixed to " another element, it can be directly on another element, or there can be one or more intermediate elements between it.When an element is expressed " connected " another element, it can be directly connected to another element, or there can be one or more intermediate elements between it.The terms " vertical " " horizontal " " left " " right " and similar expressions used in the specification are only for the purpose of illustration.

[0021] Unless otherwise defined, all technical and scientific terms used in the present disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terminology used in the description of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The use herein of the terms "and / or" includes a set of one or more associated listed items.

[0022] As Figure 1 , 2 , 3, 4, a rotating needle shuttle synchronous double servo control system, comprising a control unit, a communication module, a power input module, a switching power supply module and a voltage detection module, the control unit is used for synchronous precise coordination control two servo motors, the control unit contains ARM master chip and double channel PWM output circuit, the communication module is used for data exchange, receives instructions and feedback system state, the power input module is used for providing the basic power input support of wide voltage range adaptation, the switching power supply module is used for converting AC input into multiple stable DC output, the voltage detection module is used for real-time accurate monitoring input voltage state, realizes overvoltage / undervoltage alarm and power failure protection, ensures that the system runs in the safe voltage range, the communication module, the power input module, the switching power supply module and the voltage detection module are connected with the control unit.

[0023] As an embodiment, the voltage detection module includes resistors R58, R59, R60, R61, R61, R63, R65, operational amplifier U12B (LM358) and capacitor C27, the resistors R58, R59, R60, R61, R63 and R65 are connected with the operational amplifier U12B, and the resistor R65 is also connected with the capacitor C27; the alarm threshold of the voltage detection module is dynamically configured through the ADC port of the ARM master chip (STM32F407) of the control unit, supports voltage anomaly (overhigh / overlow) and power failure detection, and synchronously triggers double servo motor shutdown when power failure.

[0024] As an embodiment, the switching power supply module includes chip U13 (UC2844), chip U14 (EL2501), chip U15 (TL431), resistor R71, resistor R72, resistor R73, resistor R74, resistor R75, resistor R76, resistor R77, resistor R78, resistor R80, resistor R81, capacitor C30, capacitor C31, capacitor C32, capacitor C33, capacitor C34, capacitor C35, diode D11, diode D12, diode D13, diode D14, triode Q12, and transformer T1, resistor R71, resistor R72, resistor R74, resistor R75, resistor R76, and capacitor C30, capacitor C31 are connected with chip U13, resistor R74 is also connected with resistor R73, resistor R75 is also connected with triode Q12, triode Q1 is also connected with resistor R78 and diode D11, diode D11 is connected with resistor R77, capacitor C32, and transformer T1 (the primary and secondary windings thereof are connected to different elements, the primary winding Pri 112T2x0.2mm is connected to P+ and PGND through C32 to receive input voltage; the secondary windings 24V 30T 2x0.3mm, 15V 19T1x0.3mm, and 5V 7T 2x0.4mm are connected to the anodes of D12, D13, and D14 respectively to generate different voltages), transformer T1 is connected with diode D12, diode D13, diode D14, capacitor C33, capacitor C34, and capacitor C35, chip U14 is connected with chip U13, pin 2 of chip U13 is connected with chip U15, and chip U15 is also connected with resistor R80 and resistor R81. (The input voltage is first divided and current-limited by resistors (such as R73, R74, etc.) to ensure the safety of the subsequent circuit; capacitors (C30, C31, C32, etc.) are used to filter out noise and ripple in the input voltage, providing a more stable DC voltage; the control chip U13 processes the input signal according to the internal logic and outputs a PWM (pulse width modulation) signal through the OUTPUT pin to control the switching state of Q12 (power MOSFET); the power MOSFET Q12 quickly switches between conduction and cutoff after receiving the control signal to adjust the current size and direction flowing through the primary winding; the transformer T1 generates a magnetic field using the varying current in the primary winding, and the secondary winding induces a corresponding electromotive force, achieving voltage conversion and electrical isolation; different turn ratios of the secondary windings can generate different levels of output voltage (such as 24V, 15V, and 5V) to meet different power needs; the AC voltage generated by the secondary winding is rectified by diodes (D12, D13, D14, etc.) into unidirectional pulsed DC voltage; finally, filter capacitors (C33, C35, C34, etc.) further smooth these pulsed DC voltages to obtain relatively stable and pure DC output voltage.Based on the PWM technology, the switching power supply can reduce energy loss while maintaining high efficiency; compared with the traditional linear voltage regulator, the switching power supply can use a smaller size transformer and other components, thereby reducing the overall volume and weight; through the precise feedback control system, the output voltage can be maintained stable even when the load changes; the design allows working in a wider input voltage range and can provide multiple stable output voltage levels, suitable for various application scenarios.

[0025] As an implementation, the power input module includes a filter FB1, a resistor R64, a resistor R66, a resistor R67, a transistor Q11 and a relay K1, the filter FB1 is connected with the resistor R67, the filter FB1 is used for connecting a three-phase alternating current power supply and suppressing electromagnetic interference, and the transistor Q11 is used for on-off power output.

[0026] As an implementation, the RS-485 bus of the communication module adopts differential signal transmission and is integrated with an isolation amplifier; the communication module includes an RS-485 bus interface and an isolation transformer (ADM3053), and is used for realizing data interaction of the master control module touch screen and external equipment, and terminal matching resistors are configured on signal lines (S1_P± and S1_DIR±) to improve anti-interference capability.

[0027] After the external alternating current power supply is filtered through the power input module, the switching power supply module converts the alternating current power supply into multiple direct current voltages, and supplies the direct current voltages to a master control, a servo drive, a sensor and other subsystems; the master control receives external instructions (such as speed setting) through the RS485, combines encoder feedback data, calculates a synchronous control signal, and outputs the synchronous control signal to the servo driver; the touch screen displays running states (such as temperature and voltage) in real time; the master control obtains motor positions in real time through a high-speed encoder interface, adjusts PWM pulse output through closed-loop control, ensures that two motors (needle motors and shuttle motors) are synchronous, and the voltage detection module continuously monitors power supply states, triggers an alarm and stops when an exception occurs.

[0028] It should be noted that the specification and drawings of the utility model give the preferred implementation of the utility model, but the utility model can be realized through many different forms, and is not limited to the implementation described in the specification, and these implementation is not as the additional limitation to the content of the utility model, and the purpose of providing these implementation is to make the disclosure of the utility model more thorough and comprehensive. And, the above technical features continue to combine, form various implementation not listed above, and all are regarded as the range of the specification of the utility model; further, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes should belong to the protection range of the utility model claims.

Claims

1. A rotary needle shuttle synchronous dual servo control system comprising a control unit, a communication module, a power input module, a switching power supply module and a voltage detection module, characterized in that, The control unit is used for synchronously and accurately coordinating control of two servo motors, the communication module is used for data exchange, receiving instructions and feeding back system state, the power input module is used for providing basic power input support of wide voltage range adaptation, the switching power supply module is used for converting alternating current input into multiple stable direct current outputs, and the voltage detection module is used for real-time and accurate monitoring of input voltage state.

2. A rotating needle and shuttle synchronous dual servo control system according to claim 1, wherein, The voltage detection module comprises resistors R58, R59, R60, R61, R63, R65, an operational amplifier U12B and a capacitor C27, the resistors R58, R59, R60, R61, R63 and R65 are connected with the operational amplifier U12B, and the resistor R65 is further connected with the capacitor C27.

3. A rotating needle and shuttle synchronous dual servo control system according to claim 1 wherein, The switching power supply module comprises chips U13, U14 and U15, resistors R71, R72, R73, R74, R75, R76, R77, R78, R80 and R81, capacitors C30, C31, C32, C33, C34 and C35, diodes D11, D12, D13 and D14, a triode Q12 and a transformer T1, the resistors R71, R72, R74, R75, R76 and the capacitors C30 and C31 are connected with the chip U13, the resistor R74 is further connected with the resistor R73, the resistor R75 is further connected with the triode Q12, the triode Q12 is further connected with the resistor R78 and the diode D11, the diode D11 is connected with the resistor R77, the capacitor C32 and the transformer T1.

4. A rotating needle and shuttle synchronous dual servo control system according to claim 1 wherein, The power input module comprises a filter FB1, resistors R64, R66, R67, a transistor Q11 and a relay K1, the filter FB1 is connected with the resistor R67, the filter FB1 is used for connecting a three-phase alternating current power supply and suppressing electromagnetic interference, and the transistor Q11 is used for on-off power output.

5. A rotating needle and shuttle synchronous dual servo control system according to claim 1 wherein, The RS-485 bus of the communication module adopts differential signal transmission and is integrated with an isolation amplifier.

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