Yuhao Xu, Xiaoyuan Wang, Mingxin Liu, Na Li, Tian Yu
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Fuzzy variable gain robust control of active magnetic bearings rigid rotor system
A high speed rigid rotor system supported by active magnetic bearings (AMBs) puts forward higher requirements on the performance of controllers. The fuzzy variable gain H-infinity robust control (FVGRC) method is proposed to simplify controller design while suppressing system uncertainty. First, the T-S fuzzy model of four-degree-of-freedom (4-DOF) AMBs was established based on the 4-DOF AMBs rigid rotor equivalent coupling model optimised by the μ-gap metric. Then, based on the fuzzy models of AMBs systems under different operating conditions, the relative optimal weight function value of H-infinity robust controller was calculated when AMBs system was at value of the speed endpoint, and the fuzzy variable gain H-infinity robust (FVGR) controller was designed on this basis. Finally, the simulation and experimental results showed that the FVGRC can simplify the model of controller and ensure the stable operation of AMBs rigid rotor system in the full speed range under high-speed conditions.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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