In this study, Fuzzy PID Control scheme is designed for an active suspension system. The main goal of an active suspension system for using in a vehicle model is reducing body deflections and handling high comfort for a passenger car. The present system was modelled as a two-degree-of-freedom (2-DOF) nonlinear vehicle model. Keywords—Active suspension system, Fuzzy PID controller, a nonlinear q...

Semi active control systems are becoming increasingly popular because they offer reliability of passive systems combined with high performance and versatility of active control systems but with low power consumptions. As Magnetorheological (MR) fluids can produce good controllable damping force under application of magnetic field, MR damper can be used as effective element in semiactive vibrati...

In this study, active suspension control of the interaction between bridge can be modeled according to Euler-Bernoulli beam theory, and quarter car model with three degrees freedom is studied. The system consists a spring, damper, linear actuator. designed using classical PID self-tuning fuzzy (STFPID) reduce vehicle body's disruptive effects. To determine performance controllers, two different...

In this work we obtain a new description of the vertical motion of the car including the active suspension. It consists of 4 completely decoupled subsystems. The first 3 ones are of order 4 each and they are analogous to standard quarter car suspension models. The 4th subsystem is of order 2 and it introduces a new abstract variable denoted by γ. One of the novelties of this modeling result is ...

This paper presents a control of active suspension for quarter car model with two degree of freedom by using H∞ method. Absolute velocity of car body is measured for feedback. The system parameter variations are treated with multiplicative uncertainty model. Simulation results show that the H∞controller provides good trade-off between ride quality, suspension packaging and road holding constrai...

This paper presents the formulation of a slipcontrol model for purposes of performing slip tracking of target slip. Antilock braking system modelling is performed to develop a quarter car vehicle deceleration model for braking without cornering. Input-state based feedback linearisation is applied to the highly non-linear developed antilock braking system model. Input-state feedback linearisatio...