Affiliation: | State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, P. R. China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400031, P. R. China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400032, P. R. China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400033, P. R. China |