Robust hybrid observer for speed sensorless estimation of a DC motor. - Yong Zhou; YengChai Soh; JianXin Shen (ICCA, 2011)

Speed Estimation and Nonmatched Time-Varying Parameter Identification for a DC Motor With Hybrid Sliding-Mode Observer. - Yong Zhou; YengChai Soh; JianXin Shen (IEEE Trans. Ind. Electron., 2013)