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2012 (Vol. 4, Issue: 20)
Article Information:

Computational Effective Predictive End-Point Trajectory Control of Flexible Manipulators with Measureable Feedback Lag

Xiaoya Wei and Shan Liu
Corresponding Author:  Xiaoya Wei 

Key words:  Flexible manipulator, high computation efficiency, measuring lag, predictive control, , ,
Vol. 4 , (20): 3875-3884
Submitted Accepted Published
December 18, 2011 April 20, 2012 October 15, 2012
Abstract:

A trajectory tracking approach is proposed for end-point trajectory control of elastic manipulator based on model predictive control. In practice measuring lag is inevitable for flexible manipulator. To solve the problem, a simplified linear predictive model is derived from the manipulatorís dynamics and special prediction strategy based on this model is designed to predict the robotís future behavior with delayed feedback. Then the control law aimed to minimize a quadratic performance index of predicted tracking error is proposed. Since the conventional predictive control involves large amount of calculation, which is intolerable for high sampling speed, proper simplifications are made to achieve high computation efficiency through obtaining the analytical expression of the control signal. Theoretical analysis proves the boundness and stability convergence of the end-point tracking error. Finally the proposed controller is applied to a one-link manipulator in simulation section, where good control effect demonstrates the advantages of the proposed controller.
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  Cite this Reference:
Xiaoya Wei and Shan Liu, 2012. Computational Effective Predictive End-Point Trajectory Control of Flexible Manipulators with Measureable Feedback Lag.  Research Journal of Applied Sciences, Engineering and Technology, 4(20): 3875-3884.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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