This study presents evaluation of effect of in-wheel electric motors mass on the performance of passive and active suspension systems using matlab. Linear Quadratic Regulator (LQR) is one of more common control methods which is used to complete the design of the active suspension system in this paper .Unsprung mass is one of the important parameters which effects on road holding and ride comfor...

The problem of optimal vibration control for vehicle active suspension systems under road roughness disturbance is considered. First, the models for two-degree-freedom quarter-car suspension system under road roughness disturbance are presented, and road disturbances are considered as the output of an exosystem. Then, the feedforward and feedback optimal vibration control (FFOVC) law for vehicl...

This brief investigates the problem of robust sampled-data control for active vehicle suspension systems. By using an input delay approach, the active vehicle suspension system with sampling measurements is transformed into a continuous-time system with a delay in the state. The transformed system contains non-differentiable time-varying state delay and polytopic parameter uncertainties. A Lyap...

In this paper, H2 & H∞ contro1 for an active suspension system are presented. These Controllers are designed for the order reduced model of the plant that makes the design problem so easy, But preserves the performances and stability of the nominal closed loop system. Some constraints on the Input and output sensitivity functions are considered. The results show control specifications are met t...

In this paper, multi-objective uniform-diversity genetic algorithm (MUGA) with a diversity preserving mechanism called the ε-elimination algorithm is used for Pareto optimization of 5-degree of freedom vehicle vibration model considering the five conflicting functions simultaneously. The important conflicting objective functions that have been considered in this work are, namely, vertical accel...

Based on the dynamics analysis about the tracked vehicle electro-hydraulic semi-active suspension model, the optimal damping ratio control method was given in the paper. According to the character of suspension control objects and the influence factors of the vehicle ride comfort performance, the distributed not real-time suspension control system project was given. In the paper, the hardware a...

This paper presents the design of a distributed sensing system that uses an Extended Kalman Filter (EKF) to fuse measurements, so that automotive vehicle states can be estimated for use by a Semi-active Suspension control system. To improve ride comfort and handling quality, relative displacements and velocities of suspension systems are estimated. To control the stability of vehicles, roll, ya...

An optimal Fractional Order PI λ D μ (FOPID) controller is designed for a full vehicle nonlinear active suspension system. The optimal values of FOPID controller parameters for minimizing the cost function are tuned using an Evolutionary Algorithm (EA), which offers an optimal solution to a multidimensional rough objective function. The fitness parameters of FOPID controller (proportional const...