A new control method of rotor re-suspension after short failure of active magnetic bearing system

Author:

Zhu Yi-Li1,Zhang Yan-Hong1,Liu Yi-Lin2

Affiliation:

1. Department of Electrical Engineering, Changzhou Institute of Technology, Changzhou 213032, China

2. College of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China

Abstract

As it is difficult for traditional control method to realize rotor resuspension after short failure of Active Magnetic Bearing (AMB) system, a new control method containing rotor collision force evaluation algorithm module, rotor position control algorithm module and rotor vibration speed control algorithm module was proposed. Through the evaluation of rotor collision force, the controller automatically selects rotor positon control mode or rotor speed control mode. Based on rigid rotor theory, rotor dynamic model was established to analyze the dynamic responses after short failure of AMB system utilizing different control method. The results proved that the proposed control method can successfully realize rotor re-suspension.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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