期刊
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
卷 68, 期 1, 页码 391-395出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCSII.2020.2999937
关键词
Robotic manipulators; trajectory tracking; finite time control; non-singular terminal sliding mode
资金
- National Natural Science Foundation of China [61873061]
- Qing Lan Project
This paper investigates the trajectory tracking problem of n-link robotic manipulators with uncertainties and disturbances, proposing a novel non-singular terminal sliding mode surface and a corresponding control law to ensure global convergence by eliminating chattering phenomenon. A two-link robotic manipulator example is provided to demonstrate the effectiveness of the proposed scheme.
This brief investigates the trajectory tracking problem of n-link robotic manipulators with internal uncertainties and external disturbances. At first, a novel non-singular terminal sliding mode surface is proposed which contains arctan function (ATNTSM). Then, a robust ATNTSM control law is designed to ensure that the system states globally converges to origin in finite time. Moreover, the sign function is replaced by saturation function in the control law, thus the actual control law becomes continuous and the chattering phenomenon can be completely eliminated. In the end, a two-link robotic manipulators as an example is provided to illustrate the effectiveness of the proposed scheme.
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