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Online frequency domain information for control of a flexible-link robot with varying payload

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3 Author(s)
S. Yurkovich ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; F. E. Pacheco ; A. P. Tzes

The authors present experimental results on endpoint position control of a single-link, very flexible robot arm carrying an unknown, varying payload. The control objective is to maintain endpoint position accuracy in the presence of flexure effects after rapid movement to a rigid-body slew-angle commanded position. Fast, simple, and efficient frequency-domain schemes are used for online controller gain adjustment within an effective scheduling framework. Only endpoint acceleration measurements and motor shaft angle measurements are utilized in relatively simple control laws, where the appropriate gains have been scheduled in accordance with modal frequency information corresponding to a varying, unknown payload

Published in:

Robotics and Automation, 1989. Proceedings., 1989 IEEE International Conference on

Date of Conference:

14-19 May 1989