Part I: Modeling of a One-Degree-of-Freedom Active Hydraulic Mount

[+] Author and Article Information
P. M. FitzSimons, J. J. Palazzolo

Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824-1226

J. Dyn. Sys., Meas., Control 118(3), 439-442 (Sep 01, 1996) (4 pages) doi:10.1115/1.2801164 History: Received October 14, 1994; Online December 03, 2007


There is a diverse range of applications for active hydraulic mounts such as vibration absorbers, flight simulators, and industrial test rigs. The purpose of the mount considered here is to make a mass that is driven by an external force and a hydraulic actuator behave as if it were a prescribed mechanical impedance driven solely by the external force. We develop a model of this mount that includes the effects of servovalve dynamics and fluid compressibility and will be used in the future design of a robust control system. Then the conic sector bound method, which is readily amenable to the application of established robust control methodologies, is used to describe a family of linear time-varying plants that could be used to represent the nonlinear behavior of the system.

Copyright © 1996 by The American Society of Mechanical Engineers
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