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RESEARCH PAPERS

Impact and Force Control: Modeling and Experiments

[+] Author and Article Information
K. Youcef-Toumi

Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139

D. A. Gutz

General Electric, Aircraft Engine Control System Design, Lynn, MA

J. Dyn. Sys., Meas., Control 116(1), 89-98 (Mar 01, 1994) (10 pages) doi:10.1115/1.2900685 History: Received December 01, 1989; Revised December 01, 1992; Online March 17, 2008

Abstract

Robot manipulators and drive systems can experience instability or poor control performance after impacting with an environment. This paper presents an analytical model for impact which is experimentally validated step-by-step. Extensive simulations and experiments are conducted to explain impact phenomena for the case of a force feedback control of a drive system. The results are based on an energy method and presented concisely in dimensionless form. To this end, a small number of dimensionless groups are used to characterize the impact behavior through simulations and tests. The study shows that an integral force compensation with a velocity feedback improves force tracking and reject impacts. It is also revealed that impact response can be tuned by selecting a favorable dimensionless ratio of force to approach velocity.

Copyright © 1994 by The American Society of Mechanical Engineers
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