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| Thrust Ripple Suppression for Linear Flux-Switching Permanent Magnet Machine Based on a Repetitive Control Strategy of Nonlinear Feedback |
| Meng Gaojun1, 2, Yu Haitao2, Hu Minqiang2, Liu Haitao1, Jiu Chenxiao3 |
1. School of Power Electric Engineering Nanjing Institute of Technology Nanjing 210000 China;
2. Engineering Research Center for Motion Control of MOE Southeast University Nanjing 210000 China;
3. National Key Laboratory of Flight Vehicle Control Integrated Technology Xi’an 710000 China |
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Abstract For the primary permanent magnet linear flux-switching permanent magnet (LFSPM) machine, the position-dependent cogging force caused by double salient structure, friction and parameters uncertainties have impacts on its servo performance. A new repetitive control strategy based on the nonlinear feedback is proposed. Firstly, a repetitive controller (RC) is designed to compensate the thrust ripple arising from the cogging force. Then, the nonlinear feedback controller (NFC) is added into, to compensate the thrust fluctuation caused by friction and parameters uncertainties. Meanwhile, the convergence error gradually decreases with the increasing of periodic numbers. The global asymptotic stability is thereby ensured. Finally, experimental evaluations of the proposed scheme are carried out on A&D5435 LFSPM drive platform. The test of the LFSPM machine control system has verified the proposed scheme.
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Received: 22 April 2016
Published: 02 May 2017
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2017, Vol. 32 
