Global finite-time inverse tracking control of robot manipulators |
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Authors: | Yuxin Su Chunhong Zheng |
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Affiliation: | 1. School of Electro-Mechanical Engineering, Xidian University, Xi’an 710071, China;2. School of Electronic Engineering, Xidian University, Xi’an 710071, China |
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Abstract: | This paper addresses the global finite-time tracking of robot manipulators. By replacing with the nonlinear exponential-like errors, the commonly used inverse dynamics control for robot manipulators is modified to produce global finite-time tracking. Using this method, the controlled robotic system is transformed into a nonlinear and decoupled one, and thus the tracking performance is very convenient to quantify. A Lyapunov-like argument along with finite-time stability analysis is employed to prove global finite-time stability. Simulations performed on a two degree-of-freedom (DOF) manipulator are provided to illustrate the effectiveness and the improved performance of the formulated algorithm. |
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Keywords: | Robot control Finite-time stability Tracking control Global stability Inverse dynamics control |
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