1. School of Electrical Engineering and AutomationAnhui University Hefei Anhui 230601 China
2. School of Electronics and Information EngineeringAnhui University Hefei Anhui 230601 China
3. Key Laboratory of Computational Intelligence and Signal ProcessingMinistry of EducationAnhui University Hefei Anhui 230039 China
4. Department of Modern MechanicsUniversity of Science and Technology of China Hefei Anhui 230026 China
5. School of Instrument Science and Opto‐electronics EngineeringHefei University of Technology Hefei Anhui 230009 China
6. CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Precision Machinery and Precision InstrumentationUniversity of Science and Technology of China Hefei Anhui 230026 China