Unified suppression method for external disturbances and internal levitation force ripples of magnetic levitation motor system

A unified suppression system for external disturbances and internal levitation force ripples of a magnetic levitation motor system, comprising:

• a time-varying levitation force data acquisition and conversion module configured to acquire time-varying levitation force data of a magnetic levitation motor, and convert the time-varying levitation force data of the magnetic levitation motor into nominal levitation force feedback data of a time-invariant levitation force;
• a Kalman observer design module configured to design a Kalman observer on the basis of the nominal levitation force feedback data;
• an external disturbance and internal levitation force ripple data acquisition module configured to enable the Kalman observer to observe and acquire external disturbance and internal levitation force ripple data of a magnetic levitation motor system;
• and
• a suppression module configured to forwards feed and supplement the external disturbance and internal levitation force ripple data of the magnetic levitation motor system into a levitation control system of the magnetic levitation motor, thereby achieving unified suppression of external disturbances and internal levitation force ripples of the magnetic levitation motor system.