Decoupling Control Strategy of BLIM considering Rotor Mass Eccentricity

被引:2
作者
Bu, Wenshao [1 ]
Li, Biao [2 ]
Lu, Chunxiao [2 ]
机构
[1] Henan Univ Sci & Technol, Elect Engn Coll, Luoyang 471023, Peoples R China
[2] Henan Univ Sci & Technol, Informat Engn Coll, Luoyang 471023, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1155/2018/9579125
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A BLIM, i.e., bearingless induction motor, is a multivariable, nonlinear, and strong coupling object; to achieve its high performance magnetic suspension operation control and overcome the influence of the rotor mass eccentricity, a decoupling control strategy considering the rotor mass eccentricity is proposed. Firstly, the mathematical model of the torque system based on the rotor flux orientation and the mathematical model of the magnetic suspension system based on the air gap flux orientation are presented; on this basis, the inverse system decoupling control method of the BLIM is researched. Then, according to the frequency characteristics of the unbalanced displacement, an unbalance vibration compensator is designed, which can generate a compensation force to suppress or eliminate the unbalanced displacement. Simulation experimental results have shown that the decoupling control among the rotor flux-linkage, motor speed, and two radial displacement components can be achieved; in the steady state, the unbalanced displacement can be basically eliminated, while, during the mutation process of motor speed, the unbalanced displacement can be suppressed effectively.
引用
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页数:9
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