1. College of Mechanical and Vehicle Engineering and the State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, China
2. School of Automobile Engineering, Chongqing University, Chongqing, China
3. Intelligent Vehicle Research and Development Institute, Changan Auto Company, Chongqing, China
4. School of Economics and Management, Chongqing Normal University, Chongqing, China