Abstract
This research work proposes a full state systematic feedback control design method for some classes of non-linear systems which are forced to follow a specific desired trajectory, such as robotic systems, using uncertain polytopic linear parameter-varying (LPV) modelling approach. An LPV representation of the system is generated from linearization of its usual Lagrangian equation about a desired state trajectory and is reduced to an uncertain polytopic one. A vector of scheduling signals from the desired trajectory information is produced to construct the LPV model. The control gain matrix is derived by solving a set of linear matrix inequalities (LMIs) that returns the sufficiently small value of the time derivative of the Lyapunov function. A sufficient condition is proposed to guarantee the asymptotic stability of the closed-loop LPV systems against the uncertainties on the vertices. The proposed scheme is applied to controller synthesis of a two-degree-of-freedom robotic manipulator trajectory tracking problem.
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Recommended by Associate Editor Changchun Hua under the direction of Editor Myo Taeg Lim. This work is supported by Shahed University.
Mohammad Bagher Abolhasani Jabali received the B.Sc. and M.Sc. degrees from Amirkabir University, Tehran, Iran, in 2004 and 2007, respectively. He is currently pursuing a Ph.D. degree at Shahed University, Tehran, Iran. He has taught at Sadra Institute of Higher Education of Tehran from 2008. Currently, he is a Senior Expert with Iran Grid Management Company (IGMC). His current research interests include control and analysis of power system dynamics and stability.
Mohammad Hossein Kazemi received his B.Sc. degree in Electrical Engineering from the Khajeh Nasir University of Technology, Tehran, Iran. He received his M.Sc. and Ph.D. degrees in control engineering from the Sharif University of Technology, Tehran, Iran, and Amirkabir University, Tehran, Iran, in 1995 and 2001, respectively. He is currently an Assistant Professor in the Department of Electrical Engineering at the Shahed University, Tehran, Iran. His research interests include robotics, adaptive and robust control.
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Jabali, M.B.A., Kazemi, M.H. Uncertain polytopic LPV modelling of robot manipulators and trajectory tracking. Int. J. Control Autom. Syst. 15, 883–891 (2017). https://doi.org/10.1007/s12555-015-1432-1
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DOI: https://doi.org/10.1007/s12555-015-1432-1