Abstract
The bearingless permanent magnet-types synchronous motor is nonlinear and coupling complex system. On the basis of the full formula which express the coupling between suspension and rotor torque, parameters of the motor are discussed to the operation speed and suspension performance. Meanwhile, aiming at the robust control problem, fuzzy adaptive sliding mode control theory is applied. Throughout the simulation, the influence of parameters to operation performance is verfied, besides when there are disturbance and the parameters changing the control methodology is effective to bearingless permanent magnet-type synchronous motor.