Abstract：High performance permanent magnet motor servo system needs fast current response. The delay link in digital control system will restrict the dynamic performance of current loop. For this reason, this paper deduces the mathematical model of the delay link in vector control system and analyses its adverse effects. Accordingly, Smith predictive method is introduced, and a Smith predictive current controller is proposed for the high dynamic response requirements of the current loop. The design process and implementation method of the current controller are given, and the sensitivity of motor parameters is discussed. The simulation and experimental results show that the proposed control strategy is correct and effective. It can compensate the delay link of the control system, improve the dynamic performance of the current loop effectively, and then improve the overall performance of the servo system.
潘子昊, 卜飞飞, 轩富强, 杨志达. 基于Smith预估器的永磁电机高动态响应电流环控制策略[J]. 电工技术学报, 2020, 35(9): 1921-1930.
Pan Zihao, Bu Feifei, Xuan Fuqiang, Yang Zhida. High-Dynamic-Response Current Loop Control Strategy of Permanent Magnet Motor Based on Smith Predictor. Transactions of China Electrotechnical Society, 2020, 35(9): 1921-1930.
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2020, Vol. 35 
