Funding for this research was provided by:
National Natural Science Foundation of China (Grant No.61403426)
National Key Research and Development Plan (Grant No. 2018YFB1201602)
State Key Laboratory of Mechanical Transmissions of Chongqing University (SKLMT-KFKT-201602)
State Key Laboratory of Robotics and System (SKLRS-2017-KF-13)
Fundamental research funds for the central universities of Central South University (Grant No.2017 zzts490)
Major Projects of Science and Technology in Hunan (Grant No.2017GK1010)
Article History
First Online: 20 September 2018