Sliding Mode Variable Structure Control of a Bearingless Induction Motor Based on a Novel Reaching Law

Zebin Yang, Ling Wan, Xiaodong Sun, Fangli Li and Lin Chen
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Zebin Yang: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Ling Wan: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Xiaodong Sun: Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
Fangli Li: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Lin Chen: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China

Energies, 2016, vol. 9, issue 6, 1-14

Abstract: In order to improve the performance of the Bearingless Induction Motor (BIM) under large disturbances (such as parameter variations and load disturbances), an adaptive variable-rated sliding mode controller (ASMC) is designed to obtain better performance of the speed regulation system. Firstly, the L 1 norm of state variables is applied to the conventional exponential reaching law and an adaptive variable-rated exponential reaching law is proposed to reduce system chattering and improve bad convergence performance of the sliding mode variable structure. Secondly, an integral sliding-mode hyper plane is produced according to the speed error in speed regulation system of BIM. Current signal is extracted by the combination of the sliding-mode hyper plane, the electromagnetic torque and the equation of motion. Finally, the feedback speed can adjust operating state adaptively according to speed error and make system chattering-free moving. The simulation and experiment results show that the proposed ASMC can not only enhance the robustness of the system’s uncertainties, but also improve the dynamic performance and suppress system chattering.

Keywords: Bearingless Induction Motor (BIM); adaptive variable-rated sliding mode controller (ASMC); adaptive variable-rated reaching law; chattering; robustness (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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