The Research of Electric-mechanical Converter Frequency Characteristic of Large Flow 2D Digital Servo Valve
Author(s): LI Sheng, YANG Bo, RUAN Jian, YU Zhang-bin, LIU Kui, GUO Ke
Pages: 30-34
Year: 2016 Issue: 7
Journal: Hydraulics Pneumatics & Seals
Keyword: space vector pulse width modulation; large flow 2D digital servo valve;
Abstract: In order to make developed large flow 2D digital servo valve to achieve better performance, designs a integrated controller based on DSP chip and DRV8432 full build motor drive chip. The high frequency PWM wave act on three half bridge circuit of DRV8432 to drive electric-mechanical converter. Adopt position closed-loop control, speed closed-loop control and current closed-loop control to drive the electric-mechanical converter. Continuous tracking control algorithm can eliminate the contradiction between the response speed and con-trol precision of the electric- mechanical converter. Combined with the Simulink simulation, the simulation results show that the method has good effect. Design experiment scheme and set up experiment platform to test the integrated controller, the experiment results show that the controller has good steady-state performance.
Pages: 30-34
Year: 2016 Issue: 7
Journal: Hydraulics Pneumatics & Seals
Keyword: space vector pulse width modulation; large flow 2D digital servo valve;
Abstract: In order to make developed large flow 2D digital servo valve to achieve better performance, designs a integrated controller based on DSP chip and DRV8432 full build motor drive chip. The high frequency PWM wave act on three half bridge circuit of DRV8432 to drive electric-mechanical converter. Adopt position closed-loop control, speed closed-loop control and current closed-loop control to drive the electric-mechanical converter. Continuous tracking control algorithm can eliminate the contradiction between the response speed and con-trol precision of the electric- mechanical converter. Combined with the Simulink simulation, the simulation results show that the method has good effect. Design experiment scheme and set up experiment platform to test the integrated controller, the experiment results show that the controller has good steady-state performance.
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