Affiliation of Author(s):自动化学院

Journal:IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS

Key Words:Active magnetic bearing (AMB) complex coefficient frequency characteristics gyroscopic effect synchronous vibration

Abstract:To effectively suppress the synchronous vibration torques for a magnetically suspended rotor (MSR) with significant gyroscopic effects and serious coupling dynamics, a novel cross-feedback notch filter is proposed in this paper. First, the coupled multi-input-multi-output active magnetic bearing rotor system is converted into an equivalent complex single-input single-output (SISO) system. The equivalent transformation aims at easing the controller design and extending the classical stability criterion to the complex coefficient frequency domain. Then, the principle and implementation of the proposed scheme used for synchronous vibration suppression over an entire rotational speed range is analyzed in details. The performance compared with the conventional decentralized notch filter is investigated. Moreover, the closed-loop stability, which based on the equivalent complex SISO system and complex-coefficient stability criterion is given. Experimental results on a magnetically suspended flywheel demonstrate the significant effect of the proposed method on both synchronous vibration suppression and stability preservation.

ISSN No.:0278-0046

Translation or Not:no

Date of Publication:2017-09-01

Co-author:Sun, Jinji,Miao, Cunxiao,Fang, Jiancheng

Correspondence Author:Sun, Jinji,彭聪,Peng Cong