Abstract：The amplitudes of strong pull-in current and hold-on current passing through the high speed

solenoid valve were regulated accurately by using hysteresis control to realize pulse width modulation of the

voltage of fast solenoid valve，the duty cycle of the current pulse passing through the high speed solenoid valve

was controlled by variable frequency control with variable duty cycle，and the protection functions of input

overvoltage，input undervoltage and output short circuit were designed. A high speed solenoid valve control

instrument was designed based on hysteresis control method. By using the proposed high speed solenoid valve

control instrument during the maintenance of aeroengine high speed solenoid valve and main fuel control

accessories，the fault of main fuel system of aeroengine caused by unstable input signal of controller was

eliminated. Benefited from strong anti-interference ability of the proposed instrument，instrument damage caused

by misoperation in the maintenance process was prevent，maintenance quality of high speed solenoid valve has

been improved.

      Key words：aviation high speed solenoid valve；hysteresis control；variable frequency control with variable

duty cycle；pulse width modulation