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Linear Quadratic Design of Passive Vibration Isolators

[+] Author Affiliations
S. Murat Bağdatlı

Celal Bayar University, Manisa, Turkey

Chinedum E. Okwudire, A. Galip Ulsoy

University of Michigan, Ann Arbor, MI

Paper No. DSCC2014-6142, pp. V003T50A003; 8 pages
  • ASME 2014 Dynamic Systems and Control Conference
  • Volume 3: Industrial Applications; Modeling for Oil and Gas, Control and Validation, Estimation, and Control of Automotive Systems; Multi-Agent and Networked Systems; Control System Design; Physical Human-Robot Interaction; Rehabilitation Robotics; Sensing and Actuation for Control; Biomedical Systems; Time Delay Systems and Stability; Unmanned Ground and Surface Robotics; Vehicle Motion Controls; Vibration Analysis and Isolation; Vibration and Control for Energy Harvesting; Wind Energy
  • San Antonio, Texas, USA, October 22–24, 2014
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-4620-9
  • Copyright © 2014 by ASME


Design of passive vibration isolators using the popular Linear Quadratic (LQ) control design method is discussed. A single degree of freedom (DOF) example is used to illustrate the main concepts (i.e., skyhook damping, tradeoff between response to base excitation and external disturbances). The LQ design results are also presented for two DOF isolators to investigate two alternative approximate solution strategies, selection of weights, and location of isolators. The LQ approach is shown to be a suitable and convenient approximate design method for locating and tuning passive vibration isolators that approximate skyhook damping.

Copyright © 2014 by ASME



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