In this paper, a quarter car active suspension system with a hydraulic actuator, has been controlled by sliding mode coupled with an adaptive approach. To deal with all kinds of uncertainty arising from the effect of external perturbation or the any nonlinear behavior s More
In this paper, a quarter car active suspension system with a hydraulic actuator, has been controlled by sliding mode coupled with an adaptive approach. To deal with all kinds of uncertainty arising from the effect of external perturbation or the any nonlinear behavior system, sliding mode control has been used. In the proposed method the sliding surface, by using an optimal strategy to minimize the optimal cost function is derived, so the result is a logarithmic sliding surface. Adaptive algorithms proposed in this paper because of the nonlinear variability by time and not bounded uncertainty in the system. While the effects of parameter uncertainties and external disturbances to system performance have been dramatically reduced, the stability of control system proves based on the Lyapanof theory. The proposed control method has been done on a quarter car active suspension system with a hydraulic actuator. Simulation results of the proposed method show that the activation of suspension system by the proposed method increases its performance compare with the passive suspension system.
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