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RESEARCH PAPERS: Papers on Control of Robotic Devices

Control of Force Distribution in Robotic Mechanisms Containing Closed Kinematic Chains

[+] Author and Article Information
D. E. Orin, S. Y. Oh

Department of Electrical Engineering, The Ohio State University, Columbus, Ohio 43210

J. Dyn. Sys., Meas., Control 103(2), 134-141 (Jun 01, 1981) (8 pages) doi:10.1115/1.3139653 History: Received June 05, 1980; Online July 21, 2009

Abstract

Control of the force distribution in locomotion and manipulation systems containing closed kinematic chains is an important problem since many tasks such as walking or grasping depend upon it. The basic problem is to solve for the input joint torques for a particular system trajectory and is usually underspecified. As such, linear programming has been used to obtain a solution which optimizes a weighted combination of energy consumption and load balancings. Inequality constraints on the maximum actuator torques and reaction forces at the tip of each chain of the system are imposed, in addition to equality constraints which specify movement in a desired system trajectory. An example is given in which the joint torques to drive a hexapod locomotion vehicle in a tripod gait are computed.

Copyright © 1981 by ASME
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