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Proceedings Paper

Actuator-based vibration control using position feedback
Author(s): David R. Smith; John P. D'Angelo; Kenneth R. Lee; Richard Sturmfels
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Paper Abstract

We have developed a control strategy based entirely on the relative position of the armature and body. Additionally, we have developed an actuator which has the necessary features to take advantage of this approach. This strategy provides a modular approach to vibration isolation because it acts independently of the dynamics of any attached structures. While the system is unable to match the peak performance of adaptive multiple-input multiple-output controllers, it provides significant broadband isolation with a simple, local controller. Further, this control can be implemented within the actuator, providing more sophisticated controllers with an actuator that has less force transmission than conventional devices. This offers the potential of additional gains in isolation performance. We present the analytical model of such an actuator and control algorithm, and investigate practical limits on the general problem of position-based control for vibration isolation of structures. Within these limits, we propose a method for controlling an actual system which provides good broadband isolation with a simple control architecture. Finally, we prove the approach by demonstrating it experimentally.

Paper Details

Date Published: 9 June 1999
PDF: 7 pages
Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); doi: 10.1117/12.350777
Show Author Affiliations
David R. Smith, Univ. of Massachusetts/Lowell (United States)
John P. D'Angelo, Univ. of Massachusetts/Lowell (United States)
Kenneth R. Lee, NASA Goddard Space Flight Ctr. (United States)
Richard Sturmfels, Univ. of Wisconsin/Madison (United States)

Published in SPIE Proceedings Vol. 3668:
Smart Structures and Materials 1999: Smart Structures and Integrated Systems
Norman M. Wereley, Editor(s)

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