Perceived comfort level and ride stability are the two most important factors in the evaluation of suspension system in a mobile vehicle. It is extremely difficult to simultaneously maintain a high standard of vehicle ride, handling and body control in the vehicle by using conventional passive suspension system. However, the use of active suspensions would result in better comforts than the pas...

The National Crash Analysis Center (NCAC) at the George Washington University (GWU) has been developing and maintaining a public domain library of finite element (FE) vehicle models for use in transportation safety research. Using the NCAC’s unique and innovative reverse-engineering process, an FE model of the 2007 Chevrolet Silverado pick-up truck was developed. This pick-up truck satisfies th...

This paper presents the design of Genetic Algorithm tuned Distance based Fuzzy Sliding Mode Controller (GA+DFSMC) applied to vehicle suspension system of a quarter car model. DFSMC has only one-dimensional rule table and the generation of fuzzy rules becomes easier. Genetic Algorithm (GA) is proposed to tune the gain parameters to increase the speed of system response and to reduce the chatteri...

Non-linear characteristic of tire forces is the main cause of vehicle lateral dynamics instability, while direct yaw moment control is an effective method to recover the vehicle stability. In this paper, an optimal linear quadratic regulator (LQR) controller for roll-yaw dynamics to articulated heavy vehicles is developed. For this purpose, the equations of motion obtained by the MATLAB sof...

In this paper, the enhancement of vehicle stability and handling is investigated by control of the active geometry suspension system (AGS). This system could be changed through control of suspension mounting point’s position in the perpendicular direction to wishbone therefore the dynamic is alternative and characteristics need to change. For this purpose, suitable controller needs to change...

This paper aims at presenting the efficiency of the Linear Parameter Varying method for vehicle dynamics control, in particular when some actuators may be in failure. The case of the suspension actuators failure and braking actuators failure are presented. The main objective is to enhance the vehicle dynamics even with faulty actuators through the suspension control (for comfort and road holdin...

An example of the experimental validation of a finite element model of a selected heavy vehicle is presented in the paper. A truck tractor with a three a xle single drop low boy trailer and the total weight of 20 t ons was selected as a representative for the tests. The major goal of the conducted studies w as to develop a well validated the numerical model of a heavy vehicle applicable for com...

The topic of this paper is the design and analysis of a control system for a semi-active suspension in a 2-wheel vehicle. The control system is implemented via a semi-active electro-hydraulic damper located on the rear suspension of a hypersport-class motorbike. The entire design and analysis procedure is outlined: the semi-active damper is analyzed and characterized; a wide range of control st...