Title :
Industrial manipulator control with feedforward dynamic compensation
Author :
Leahy, M.B., Jr.
Author_Institution :
Dept. of Electr. & Comput. Eng., Air Force Inst. of Technol., Wright Patterson AFB, OH, USA
Abstract :
The feasibility of implementing model-based control techniques on the existing hierarchical control architecture of industrial manipulators has been evaluated experimentally. Three critical issues are addressed: the impact of stiffer PD (proportional-derivative) loops on the performance of model-based controllers with incomplete dynamic compensation in the feedforward loop, the performance degradation produced by asynchronous calculation of feedforward and feedback compensation torques, and the PD loop gain payload adaption requirements. It is concluded that a constant-gain PD feedback with an asynchronous feedforward compensation algorithm outperforms conventional controllers and could be implemented on existing control structures without hardware modifications
Keywords :
compensation; feedback; hierarchical systems; industrial robots; PD loop; feedback compensation; feedforward dynamic compensation; hierarchical systems; model-based control techniques; performance degradation; Degradation; Feedback loop; Hardware; Industrial control; Manipulator dynamics; PD control; Payloads; Performance gain; Proportional control; Torque control;
Conference_Titel :
Decision and Control, 1988., Proceedings of the 27th IEEE Conference on
Conference_Location :
Austin, TX
DOI :
10.1109/CDC.1988.194380
