Design of electric actuator simulator

For the electric actuator system, a dual inertia system is established and simplified considering the equivalent stiffness of the reducer, and nonlinear models such as friction and gap are introduced, which are discretized and embedded into the electric actuator simulator. Design the hardware circuit of the servo simulator based on ARM, capture the system input, and substitute it into the system transfer letter to obtain the deflection angle of the rudder. The DAC module is used to convert the digital quantity into an analog quantity, and the analog potentiometer is fed back to the servo controller after the op amp module. At the same time, feedback the Hall to verify the controller. It has the same interface as the real servo, and can be directly connected with the servo controller. Finally, connect the servo controller to carry out semi-physical simulation, and conduct a comparative simulation experiment with the actual servo control system. The results show that the electric actuator simulator is basically consistent with the actual electric actuator tracking curve.