Variable-domain double fuzzy active disturbance rejection control for electromagnetic linear actuators

A variable-domain double fuzzy active disturbance rejection control method is proposed for the influence of internal parameter disturbances and external uncertainty disturbances on the control system of the electromagnetic linear actuator system. A dual closed-loop control with PI control for the inner current loop and variable-domain dual fuzzy self-rejecting control for the position loop is designed. Without changing the output domain division, the output of the primary fuzzy control is used as the scaling factor to flexibly adjust the output domain of the secondary fuzzy control, which makes the fuzzy control adaptive and improves the stability and anti-interference capability of the control system. The research results show that compared with the existing control methods, the proposed control method not only has better trajectory tracking capability and control accuracy, but also has good robustness to the internal and external uncertainty disturbances of the system.