1. School of Technology; Nanjing Audit University; Nanjing 211815 China
2. Department of Mathematics; Harbin Institute of Technology (Weihai); Weihai 264209 China
3. College of Automation Engineering; Qingdao Technological University; Qingdao 266520 China
4. Space Control and Inertial Technology Research Center; Harbin Institute of Technology; Harbin 150001 China