This study presents an H∞-based robust control design for an active automobile suspension system and compares its performance with a previously designed robust LQG controller and a well tuned PI controller from contemporary literature. The robustness of the controller designs is assessed by performing μ analysis of the closed loop system. The H∞ problem is formulated as a stacked nominal performance problem. The weighting functions on complementary sensitivity, sensitivity, and controller transfer functions are chosen to obtain desirable trade-off in performance and robustness. The main objective of the controller design is to provide ride comfort for passengers. The controller design presented in this paper is shown to provide robust stability as well as desirable robust performance which is an improvement over the previously designed robust LQG controller and a PI controller chosen from contemporary literature.
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ASME 2004 International Mechanical Engineering Congress and Exposition
November 13–19, 2004
Anaheim, California, USA
Conference Sponsors:
- Applied Mechanics Division
ISBN:
0-7918-4702-0
PROCEEDINGS PAPER
Mixed-Sensitivity H∞ Control and µ Analysis of Active Automobile Suspension Available to Purchase
Hemanth Porumamilla,
Hemanth Porumamilla
Iowa State University
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Atul G. Kelkar
Atul G. Kelkar
Iowa State University
Search for other works by this author on:
Hemanth Porumamilla
Iowa State University
Atul G. Kelkar
Iowa State University
Paper No:
IMECE2004-60339, pp. 151-158; 8 pages
Published Online:
March 24, 2008
Citation
Porumamilla, H, & Kelkar, AG. "Mixed-Sensitivity H∞ Control and µ Analysis of Active Automobile Suspension." Proceedings of the ASME 2004 International Mechanical Engineering Congress and Exposition. Applied Mechanics. Anaheim, California, USA. November 13–19, 2004. pp. 151-158. ASME. https://doi.org/10.1115/IMECE2004-60339
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