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Control Strategy to Reduce Tracking Error by Impulsive Torques at the Joint  

Yang Chulho (School of Mechanical Engineering, Andong National University)
Publication Information
International Journal of Precision Engineering and Manufacturing / v.6, no.2, 2005 , pp. 61-71 More about this Journal
Abstract
The study reported deals with investigating the feasibility of control strategy for a serial rigid link manipulator that applies impulsive torques at the joints. The strategy is illustrated for a planar three rigid link manipulator. An impulse-based concept which uses successive torque impulses on rigid link as the controller for motion correction was introduced. This control strategy was tested over the entire trajectory to demonstrate that the tracking error could be reduced effectively. The best condition for minimizing the tracking error with the least impulse input at each joint is investigated by considering one design and one operating parameter. The first was the damping in the system, and the second was the sampling time during operation. The results show that this approach can provide useful guidance for the design and control of robot manipulators that require minimum impulse feedback for accurate tracking.
Keywords
control strategy; impulse-based feedback controller; robot manipulator; tracking error; torque;
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