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In this paper, a multirate output feedback (MROF) based on discrete time sliding mode control (DSMC) method is proposed. The MROF controller is designed to maintain the inverted pendulum at upright position by controlling the tracking position of a cart. This method is practical because it only used the output samples and the measurement of the system states feedback is not necessary. The MROF output...
This paper presents the use of backstepping controller in order to construct an active suspension for a quarter car model with observer design. The implementation of backstepping controller is presented in non-linear quarter car model for active suspension system. The movement of the rotational motion of arm has been taking into consideration for this system which has been neglected by the linear...
The purpose of this paper is to investigate the performance of a full car model active suspension system using LQR controller. Dynamic model used in this study is a linear model. A linear model can capture basic performances of vehicle suspension such as body displacement, body acceleration, wheel displacement, wheel deflection, suspension travels, pitch and yawn. Performance of suspension system...
The paper presents the effect of varying the boundary layer thickness, delta for sliding mode controller. In order to observe the feasibility of the system, the effect of small and large values of delta has been selected for various disturbances. Performance for each disturbance and its ability to give fast response and best performance in term of control input, side slip angle and yaw rate of a single...
The purpose of this paper is to investigate the performance of a quarter car nonlinear active suspension system with a backstepping control approach. Dynamic model of a suspension system is highly nonlinear. Rotational motion of the sprung mass (car body) and rotational motion of control arm are terms that always be neglected in the linear suspension system. This paper presented a suspension system...
This paper presents modelling and force tracking control of a non-linear hydraulic actuator applied in a quarter-car active suspension system. The controller structure of the active suspension system was decomposed into two loops namely outer loop and inner loop controllers. Outer loop controller is used to calculate the optimum target force to reject the effects of road disturbances, while, the inner...
The purpose of this paper is to propose a new control method in active steering for vehicle stability using sliding mode control technique. A single track car model is used in the study and the performance of the system using SMC technique will be compared to the pole placement and LQR techniques. Different road friction coefficients and various disturbances will be observed as the varying parameters...
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