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A Distributed On-Line Trajectory Generator for Intelligent Sensory-Based Manipulators

Published online by Cambridge University Press:  09 March 2009

A. M. S. Zalzala  and
A. S. Morris
A. M. S. Zalzala
Affiliation:
Robotics Research Group, Department of Control Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD (UK)
A. S. Morris
Affiliation:
Robotics Research Group, Department of Control Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD (UK)
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Summary

An algorithm is presented for the on-line generation of minimum-time trajectories for robot manipulators. The algorithm is designed for intelligent robots with advanced on-board sensory equipment which can provide the position and orientation of the end-effector. Planning is performed in the configuration (joint) space by the use of optimised combined polynomial splines, along with a search technique to identify the best minimum-time trajectory. The method proposed considers all physical and dynamical limitations inherent in the manipulator design, in addition to any geometric path constraints. Meeting the demands of the heavy computations involved lead to a distributed formulation on a multiprocessor system, for which an intelligent control unit has been created to supervise its proper and practical implementation. Simulation results of a proposed case study are presented for a PUMA 560 robot manipulator.

Keywords

Trajectory generatorOn-lineSensoryMinimum-time trajectoryIntelligent robots
Type
Article
Information
Robotica , Volume 9 , Issue 2 , April 1991 , pp. 145 - 155
Copyright
Copyright © Cambridge University Press 1991

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