Drive method for high-speed switch electromagnetic valve

Abstract

The invention relates to a method of driving a switch valve, specifically a method of driving a high-speed switch solenoid valve. The method comprises the steps of applying an acceleration voltage at the opening time point of the high-speed switch solenoid valve; switching the applied voltage to a maintaining voltage when the opening action of the high-speed switch solenoid valve is substantiallycompleted; and superposing a flutter signal on the basis of the stable maintaining voltage when the high-speed switch solenoid valve normally works. The invention can optimize the switch characteristics of the high-speed switch solenoid valve and can rapidly open and close the high-speed switch solenoid valve, thereby improving the control performance of the high-speed switch solenoid valve. The invention can improve the response frequency range of the high-speed switch solenoid valve to pulse-width modulation signal to a certain extent, thereby ensuring the pressure stability of a system.

Description

technical field [0001] The invention relates to a driving method of a switching valve, in particular to a driving method of a high-speed switching electromagnetic valve. Background technique [0002] Because high-speed switching solenoid valves are driven by pulse width modulation signals (PWM), they can directly digitally control the pressure and flow of fluid systems, so they are more and more widely used in modern fluid systems. However, the high-speed switching solenoid valve is driven by a common pulse width modulation signal (PWM). The opening and closing time of the high-speed switching solenoid valve is long, and the response is slow, which affects the control performance of the high-speed switching solenoid valve and will cause the need to ensure the response. The contradiction between the low frequency pulse width modulation signal (PWM) and the high frequency pulse width modulation signal (PWM) required to ensure the stability of the system pressure. Contents of...

AI Technical Summary

Problems solved by technology

However, the high-speed switching solenoid valve is driven by a common pulse width modulation signal (PWM). The opening and closing time of the high-speed switching solenoid valve is long, and the response is slow, which affects the control performance of the high-speed switching solenoid valve and will cause the need to ensure the response. The contradiction between the low frequency pulse width modulation signal (PWM) and the high frequency pulse width modulation signal (PWM) needed to ensure the stability of the system pressure

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