Chaotifying Control of Permanent Magnet Synchronous Motor

Purposely generating chaos-chaotifying control, when it is useful or beneficial, becomes one of the focuses in chaos engineering. In this paper, the direct time delay feedback is proposed for chaotifying control of permanent magnet synchronous motor (PMSM). The direct-axis or quadrature-axis stator voltage is used as manipulated variable, and the direct-axis or quadrature-axis current is used as time delay state feedback in the control law. This method can be physically realized and is simple in comparison to indirect time delay feedback method. The proposed controller has the same form of the controller proposed by Pyragas for eliminating chaos, this investigation, together with the previous research, will show that the direct time delay feedback control can generate or enhance chaos when it is useful, and eliminate chaos when it is harmful, which will give more flexibility for the control engineer. Simulation results show its effectiveness

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