1. Associate Professor, Light Industry College, Harbin Univ. of Commerce, Harbin 150028, China (corresponding author). ORCID: .
2. Professor, State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin 150030, China.
3. Professor, Mechanism and Control of Aerospace Center, Harbin 150001, China.
4. Dept. of Mechanical Engineering, Rice Univ., Houston 77005.