1. College of Control Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
2. Department of Civil and Environmental Engineering and National Rail Transit Electrification and Automation Engineering Technology, Research Center (Hong Kong Branch), The Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China
3. China National Heavy Duty Truck (Group Corporation), Jinan 250100, P. R. China
4. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, P. R. China