Semiactive Control of Multimode Vibratory Systems Using the ILSM Concept

[+] Author and Article Information
D. Karnopp, Ross R. Allen

Department of Mechanical Engineering, University of California, Davis, Calif.

J. Eng. Ind 98(3), 914-918 (Aug 01, 1976) (5 pages) doi:10.1115/1.3439052 History: Received May 22, 1975; Online July 15, 2010


The I dentically L ocated S ensor and M anipulator concept involves deriving a control force from measurements of motion at the force generator mounting point. A semiactive force generator may be made from a damper whose force-velocity law can be varied in response to a signal. These two ideas are discussed and the advantages from combining the two ideas for controlling several normal modes for distributed parameter structures are presented. Computer simulation results comparing active, semiactive, and passive suspensions for a beam-like structure subjected to broadband noise excitation are given to illustrate the performance capability of each system.

Copyright © 1976 by ASME
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