The Active Disturbance Rejection Decoupling Control for Active Multivariable Magnetic Bearing System

Based on introducing configuration of a radial 4 degrees of freedom active magnetic bearings,it establi-shes the state equations of the active magnetic bearing multivariable system.Focused on the 4 degrees of freedom radial active magnetic bearing system,it uses the principle of active disturbance rejection control( ADRC) and puts forward the strategy of multivariable active disturbance rejection decoupling control.It builds the configura-tion of control system and gives the correlation control arithmetic.According to parameters of the experiment rig,it sets up the decoupling control simulation system with Matlab,and simulates the step response of system and the start up displacement curve of the rotor.The results show that the decoupling control system is succeed in decou-pling control of multivariable system,and it has high precision,high speed of response,and low overshoot.