Voice-coil-motor-driven pilot servo valve control system and control method

A voice coil motor and control system technology, applied in the field of servo valve control, can solve problems such as low control accuracy and unstable control

Active Publication Date: 2015-12-16
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of unstable control and low control precision of the voice coil motor pilot servo valve control system

Method used

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  • Voice-coil-motor-driven pilot servo valve control system and control method
  • Voice-coil-motor-driven pilot servo valve control system and control method
  • Voice-coil-motor-driven pilot servo valve control system and control method

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Embodiment 1

[0059] Such as figure 1 As shown, a pilot-operated servo valve control system driven by a voice coil motor includes a servo valve control circuit, a computer, a servo valve, a pump source, a sensor detection system and a motion actuator, wherein the CAN bus between the computer and the servo valve control circuit The interface circuit is connected, the servo valve driving circuit and the pump source of the servo valve control circuit are connected to the servo valve, the sensor detection system includes pressure and flow sensors and displacement and speed sensors; the servo valve is connected to the motion actuator and pressure and flow sensors respectively, The motion actuator is connected to the displacement and speed sensor, and the pressure and flow sensor and the displacement and speed sensor are connected to the microcontroller MCU; the motion actuator is a hydraulic cylinder, which has a simple structure and large output force, and can be used as a high-power power compo...

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Abstract

The invention discloses a voice-coil-motor-driven pilot servo valve control system and control method, belonging to the technical field of servo valve control. The voice-coil-motor-driven pilot servo valve control system comprises a servo valve control circuit, a computer, a servo valve, a pumping source, a sensor detection system and a motion actuator, wherein the computer is connected with a CAN (controller area network) bus interface circuit of the servo valve control circuit; a servo valve drive circuit of the servo valve control circuit and the pumping source are respectively connected with the servo valve; the sensor detection system comprises a pressure and flow sensor and a displacement and speed sensor; the servo valve is respectively connected with the motion actuator and the pressure and flow sensor; the motion actuator is connected with the displacement and speed sensor; and the pressure and flow sensor and the displacement and speed sensor are respectively connected with an MCU (microprogrammed control unit). The servo valve coil is driven by an H bridge drive circuit composed of two MOS (metal oxide semiconductor) tubes and two triodes, and thus, the voice-coil-motor-driven pilot servo valve control system has the characteristics of high control stability and high control accuracy.

Description

technical field [0001] The invention relates to the technical field of servo valve control, in particular to a pilot servo valve control system driven by a voice coil motor and a control method thereof. Background technique [0002] The working principle of the voice coil driven servo valve is that an energized coil (conductor) will generate a force in a magnetic field, and the magnitude of the force is proportional to the current applied to the coil. Its basic structure is a moving coil set on a fixed permanent magnet. When the signal current is input to the coil, under the action of the electromagnetic field effect, the coil generates an axial force corresponding to the signal current, and drives the valve directly connected to the coil. The core moves to realize the opening and closing of the valve. In order to realize the pilot servo valve control driven by the voice coil motor, the final embodiment is to realize the voice coil motor control of small current. The tradit...

Claims

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Application Information

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IPC IPC(8): F16K31/12F15B21/08
CPCF15B21/085F15B21/087F16K31/12
Inventor 韩亚丽朱松青高海涛周洲郝大彬时煜郝飞
Owner NANJING INST OF TECH
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