A nonlinear repetitive controller |
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| Authors: | Xin TANG An LUO and Chunming TU |
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| Affiliation: | 1. College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha Hunan 410076, China
2. College of Electrical and Information Engineering, Hunan University, Changsha Hunan 410082, China |
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| Abstract: | A nonlinear repetitive controller is proposed. The new method is mainly composed of a repetitive control part and a deadband
relay. Whenever the input error goes beyond the range of the deadband relay, the control loop is driven dominantly by the
deadband relay to obtain fast dynamic response and meanwhile to avoid the saturation of the repetitive control part. After
the input error falls within the range of the deadband relay, the deadband relay automatically turns off and the repetitive
control alone governs the current control to eliminate the steady state error. A systematic methodology is established and
it is linked to the conventional control system design. The proposed scheme is practically applied to the current control
of active filter. Experimental results verified the feasibility of the proposed method. |
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| Keywords: | Nonlinear repetitive control Active filter Dynamic response |
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