Active Versus Passive Vibration Absorbers

[+] Author and Article Information
R. Herzog

International Center for Magnetic Bearings, Swiss Federal Institute of Technology, CH-8092 Zürich, Switzerland

J. Dyn. Sys., Meas., Control 116(3), 367-371 (Sep 01, 1994) (5 pages) doi:10.1115/1.2899231 History: Received March 26, 1992; Online March 17, 2008


Passivity based control has several advantages, e.g., robustness and simplicity. However, the passivity constraint causes performance degradations. Specifically, the degree to which passively controlled absorber systems yield a flat response around the nominal absorber frequency is limited. An inherent flatness bound is derived using Nevanlinna-Pick boundary interpolation theory. For active vibration absorbers, this limitation cancels, and magnitude response can be made arbitrarily flat.

Copyright © 1994 by The American Society of Mechanical Engineers
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