Precise control of a four degree-of-freedom permanent magnet biased active magnetic bearing system in a magnetically suspended direct-driven spindle using neural network inverse scheme

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• 作者：Xiaodong Sun^a ; ^b ; ^{xdsun@ujs.edu.cn} ; Bokai Su^a ; Long Chen^a ; ^b ; Zebin Yang^c ; Xing Xu^a ; ^b ; Zhou Shi^a
• 关键词：Magnetic bearing ; Neural network inverse ; Decoupling control ; Internal model control ; Magnetically suspended direct-driven spindle
• 刊名：Mechanical Systems and Signal Processing
• 出版年：2017
• 出版时间：1 May 2017
• 年：2017
• 卷：88
• 期：Complete
• 页码：36-48
• 全文大小：1583 K
• 卷排序：88

文摘

A four degree-of-freedom permanent magnet biased active magnetic bearing (4-DOF PMBAMB) is nonlinear and coupled. Radial position control is of vital challenge and importance for a 4-DOF PMBAMB system. A decoupling control strategy based on neural network inverse (NNI) is presented. The 2-DOF internal model control theory is used to design extra closed-loop controllers. Good decoupling and robustness performances in different conditions are achieved.