Sliding mode control of semi-active suspension using singular perturbation method 2000-05-0214
With developing technology, automobile has progressed a
comfortable one and chassis control system related to this is
Suspension plays an important role as vibration suppression and
handling. But the conventional passive suspension cannot improve
those two simultaneously. Therefore it necessitates a demand on the
several kinds of electronic-controlled suspensions.
In this paper the design of sliding mode controller using
singular perturbation method for 1/4 car semi-active suspension
model is studied. Using singular perturbation method, the full
order system is separated into slow subsystem related to sprung
mass and fast subsystem related to unsprung mass. With this model
reduction, sliding mode controller which is based on Lyapunoy
theory is designed and applied to real system easily. Sliding mode
control which is designed to be robust with changing system
parameters is applied to slow subsystem. To verify the
effectiveness of the proposed algorithm several simulations and
experiments have been conducted and to show robustness of proposed
algorithm simulations and experiments have been conducted with
changing sprung mass.
With results of simulation and experiments, the effectiveness of
proposed algorithm is confirmed and the robustness of proposed
algorithm is confirmed also.
Hyuk-Sung Park, Young-Pil Park, In-Jue Kim
DigitalPirot, Yonsei Univ., LG Electronics
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