Media type: E-Article Title: Global continuous finite‐time tracking of robot manipulators Contributor: Su, Yuxin Published: Wiley, 2009 Published in: International Journal of Robust and Nonlinear Control, 19 (2009) 17, Seite 1871-1885 Language: English DOI: 10.1002/rnc.1406 ISSN: 1049-8923; 1099-1239 Origination: Footnote: Description: AbstractThis paper addresses the global finite‐time tracking of robot manipulators. The commonly used linear proportional‐derivative (PD) plus (PD+) scheme is extended to achieve the global finite‐time tracking by replacing the linear errors with nonsmooth but continuous exponential errors. The global finite‐time stability of the closed loop with the proposed nonlinear PD plus control is shown using Lyapunov's direct method and finite‐time stability. Simulations performed on a two‐degree‐of‐freedom manipulator are provided to illustrate the effectiveness and the improved performance of the formulated algorithm. Copyright © 2008 John Wiley & Sons, Ltd.