Analysis of Dynamic Response Characteristics of Solenoid Valve Driven by Positive and Negative Pulse Voltage
A positive and negative pulse voltage control strategy based on pulse width modulation(PWM)technology is proposed to improve the dynamic response speed of the solenoid screw-in cartridge valve(SCV)with poppet valve and meet the requirements of digital hydraulic technology.Based on the analysis of the structure and working principle of the solenoid screw-in cartridge valve,the mathematical model of the solenoid screw-in cartridge valve is established,and the multi-physical field coupling model of the electromagnetic threaded cartridge valve and its test system is built by AMESim.The variation laws of coil current,spool displacement,solenoid force of the SCV under different positive and negative pulse voltage durations are studied by the established model to determine the optimal control parameters of positive and negative pulse voltage control strategy when the response speed of SCV is the fastest.The hardware-in-the-loop test bench of SCV is built by semi-physical simulation system to verify the proposed positive and negative pulse control strategy.The experimental results indicate that compared with the conventional voltage control strategy,when the duration of positive and negative pulse voltage in the positive and negative pulse voltage control strategy is 10 ms,the opening and closing times of the SCV are reduced from 30 ms to 13.5 ms and 139 ms to 14 ms,respectively.The results of the study provide a reference for the high responsiveness of solenoid threaded cartridge valves and the development of digital hydraulics
digital hydraulicpositive and negative pulse voltage controlsolenoid screw-in cartridge valvehigh-speed on-off valvehardware-in-the-loop
万方数据
维普
