Controller Design for Active Suspension System of ¼ Car with Unknown Mass and Time-Delay

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Ali Al-Zughaibi ; Huw Davies (2015)

—The purpose of this paper is to present a modeling and\ud control of a quarter-car active suspension system with unknown\ud mass, unknown time-delay and road disturbance. The objective of\ud designing the controller is to derive a control law to achieve stability\ud of the system and convergence that can considerably improve ride\ud comfort and road disturbance handling. This is accomplished by\ud using Routh-Hurwitz criterion based on defined parameters.\ud Mathematical proof is given to show the ability of the designed\ud controller to ensure the target of design, implementation with the\ud active suspension system and enhancement dispersion oscillation of\ud the system despite these problems. Simulations were also performed\ud to control quarter car suspension, where the results obtained from\ud these simulations verify the validity of the proposed design.
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