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Proceedings Paper

An integral sliding control for robust vibration isolation and its implementation
Author(s): Lei Zuo; Samir A. Nayfeh
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Paper Abstract

In this paper we propose a new robust control algorithm for skyhook isolation using an integral sliding surface. Unlike conventional sliding control based on reference tracking, a dynamic sliding surface is directly defined in state space, and the target dynamics are achieved by driving the system onto this surface. Such an algorithm eliminates the need for measurement of base vibration, and also yields an equivalent control exactly equal to that obtained by inverse dynamics. We further examine the effect of geophone sensor dynamics on the practical implementation, and design an electric circuit to correct the low-frequency characteristics of the sensor. We implement the proposed control in a realistic plant, and compare the performance to that of direct velocity feedback and conventional sliding control.

Paper Details

Date Published: 29 July 2004
PDF: 10 pages
Proc. SPIE 5386, Smart Structures and Materials 2004: Damping and Isolation, (29 July 2004); doi: 10.1117/12.539616
Show Author Affiliations
Lei Zuo, Massachusetts Institute of Technology (United States)
Samir A. Nayfeh, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 5386:
Smart Structures and Materials 2004: Damping and Isolation
Kon-Well Wang, Editor(s)

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