1. Measurement Technology and Instrumentation Key Laboratory of Hebei Province, Qinhuangdao, Hebei, China
2. School of Electrical Engineering, Yanshan University, Qinhuangdao, Hebei, China
3. Department of Mechanics, Tianjin University, Tianjin, China
4. Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, Tianjin, China