In order to improve the performance of diesel electromagnetic governor and reveal the influence rules of dynamic characteristic parameters for electromagnetic governor

the method of combining numerical simulation with experiment was applied. The numerical simulation model of moving iron electromagnetic governor was established

and the accuracy of model was verified with the maximum error 7% by experiment. Dynamic operating characteristics and the influence of parameters such as pulse width modulation(PWM) frequency

spring preload

spring stiffness

load

coil turns and magnetic materials of magnetic circuit on the dynamic characteristics of actuator were analyzed by numerical simulation. The results show that high duty ratio or full duty ratio is suitable to be applied to speed up the dynamic output speed of actuator in the initial stage

while low duty ratio is suitable to be used to maintain the output of full stroke for improving the dynamic return speed of actuator. Then enhancing the horizontal characteristic of displacement-force helps to improve the linearity of stroke output for actuator. Besides

it is found that parameters such as PWM frequency

spring preload

spring stiffness

load

coil turns and magnetic materials of magnetic circuit have an important impact on the dynamic characteristics of actuator.