A Speed Estimation Algorithm Based on Single-Manifold Discrete Time Sliding Mode Model Reference Adaptive System
Zhang Yongjun1, Sun Yinfei2, Wang Jing1
1. National Engineering Research Center for Advanced Rolling Technology University of Science and Technology Beijing Beijing 100083 China 2. Sinovel Wind Group Co., Ltd, Beijing 100872 China
Abstract：The speed estimation in direct torque control for speed sensorless technology is studied profoundly in this paper. An improved algorithm named single-manifold discrete time sliding mode MRAS is proposed on the basis of model reference adaptive system. The new algorithm obtains the identification flux using the classic MRAS, and the PI adaptive law in MRAS is replaced with the sliding mode observer which is acquired by the error function according to the Popov theory. The chattering problem is decreased by using a discrete time sliding mode control strategy. Simulation and experimental results prove the effectiveness of the algorithm by comparing with classic MRAS method.
张勇军, 孙寅飞, 王京. 基于单维离散滑模的模型参考自适应转速辨识方法[J]. 电工技术学报, 2012, 27(4): 54-58.
Zhang Yongjun, Sun Yinfei, Wang Jing. A Speed Estimation Algorithm Based on Single-Manifold Discrete Time Sliding Mode Model Reference Adaptive System. Transactions of China Electrotechnical Society, 2012, 27(4): 54-58.
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2012, Vol. 27 
