Feedback adjustable control of chaotic oscillation in multi-motor network under random disturbance

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (13) : 60-63.

GUO Shiming, WEI Duqu

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Abstract

Under some parameters and working conditions, a motor can have chaotic oscillation behavior. Chaos control of multi-motor network is of great significance to ensure normal operation of electric power transmission system. In practical production, a multi-motor network has randomness due to effects of random noise and random load on it. Therefore, it is necessary to consider the randomness of the system when designing its controller. Here, firstly, taking a permanent magnet synchronous motor (PMSM) as the node and coupling among motors as the connecting edge, the multi-motor network model with different complex topologic structures including Newman-Watts small world network and the star network under random disturbance was established. Then, based on Lyapunov stability theory, a feedback adjustable control method based on stochastic nonlinear system was proposed to control chaos of the multi-motor network. Finally, the feasibility and effectiveness of the proposed control method were verified with numerical simulation. It was shown that the study results can provide a guidance for ensuring the normal operation of electric power transmission systems.

Key words

permanent magnet synchronous motor / feedback adjustable / small-world network / chaos control / stochastic nonlinear system

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GUO Shiming, WEI Duqu. Feedback adjustable control of chaotic oscillation in multi-motor network under random disturbance[J]. Journal of Vibration and Shock, 2021, 40(13): 60-63

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