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2013 (Vol. 6, Issue: 19)
Article Information:

Robust Output Feedback Control for Active Seat Suspension Systems with Actuator Time Delay Using -Synthesis Approach

Mohammad Gudarzi, Atta Oveisi and Mohammad Mahdi Mohammadi
Corresponding Author:  Mohammad Gudarzi 

Key words:  Active suspension, D-K iteration, output feedback, robust performance, uncertain time delay, ,
Vol. 6 , (19): 3559-3567
Submitted Accepted Published
December 17, 2012 January 19, 2013 October 20, 2013

This study presents a robust output feedback optimal H&infin control synthesis for a class of uncertain seat suspension systems with actuator saturation and an uncertain actuator time delay. A vertical vibration model of human body is added in order to make the modeling of seat suspension systems more accurate. A dynamic controller is considered by using of two measurable states of the model, by real sensors, as output feedback. Moreover, uncertain actuator time delay is considered to guarantee robust performance of the closed-loop system. The controller is derived by using D-K iteration algorithm for constrained systems with norm-bounded uncertainties. The corresponding closed-loop system is asymptotically stable with a guaranteed H&infin performance. Finally, a design example is presented to show the performance and robustness of the developed theoretical results.
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  Cite this Reference:
Mohammad Gudarzi, Atta Oveisi and Mohammad Mahdi Mohammadi, 2013. Robust Output Feedback Control for Active Seat Suspension Systems with Actuator Time Delay Using -Synthesis Approach.  Research Journal of Applied Sciences, Engineering and Technology, 6(19): 3559-3567.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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