A Hybrid Adaptive and Robust Control Methodology With Application to Active Vibration Isolation
Zhang, Yisheng
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https://hdl.handle.net/2142/83798
Description
Title
A Hybrid Adaptive and Robust Control Methodology With Application to Active Vibration Isolation
Author(s)
Zhang, Yisheng
Issue Date
2003
Doctoral Committee Chair(s)
Andrew Alleyne
Department of Study
Mechanical Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Mechanical
Language
eng
Abstract
Another major contribution of this thesis work is the development of new approaches to achieve broad-band active vibration isolation with electrohydraulic actuation. Two new methods, the velocity-tracking approach and the position-tracking approach, are proposed and implemented in a custom-built multiple degree-of-freedom active vibration isolation testbed. These approaches circumvent the fundamental bandwidth limitations associated with traditional force-control approaches, and significantly improve vibration isolation performance achievable by force-control approaches. The effectiveness of the position-tracking approach to selectively isolate different vibration modes in multiple dimensional systems is also demonstrated through simulation studies.
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