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Robust servosystem design with two degrees of freedom and its application to novel motion control of robot manipulators

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3 Author(s)
Umeno, T. ; Dept. of Electr. Eng., Tokyo Univ., Japan ; Kaneko, T. ; Hori, Y.

A novel robust servosystem design method based on the two-degree-of-freedom (TDOF) controller and its application to advanced motion control for a robot manipulator is proposed. This servosystem is derived from the simple parametrization. The command input response and the closed loop characteristics can be specified independently by using two parameters which belong to the ring of stable and proper rational functions. The sensitivity and the complementary sensitivity functions can be determined straightforwardly through the optimization of the two design parameters. The control performance of the servosystem has been demonstrated. A completely decentralized joint control system for multiaxis robut manipulators has been realized. In particular, various kinds of robot motion controls, such as compliance, force, and hybrid controls, are realized in a unified way based on the robust position control. This servosystem has been implemented using DSP

Published in:

Industrial Electronics, IEEE Transactions on  (Volume:40 ,  Issue: 5 )

Date of Publication:

Oct 1993

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