Optimal semi-active preview control of a quarter car model with magnetorheological damper with respect to tire lift off

Abstract eng:
A quarter car model with magnetorheological (MR) damper is studied. An adopted experimentally verified non – linear hysteretic mathematical model is used to represent the MR damper. Approaching road disturbances are measured by a sensor. Optimal preview control strategy for fully active suspension is derived with respect to road holding, suspension rattle space and ride comfort. Continuous inverse mathematical model of the MR damper for the use of control is derived such that force generated by MR damper matches the control force of fully active system if possible. In the simulations, the effect of tire lift off is modeled using a continuous mathematical function.

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