Vehicle Deflection System

1179 Words5 Pages
Today, a rebellious race is taking place among the automotive industry so as to produce highly developed models. One of the performance requirements is advanced suspension systems which prevent the road disturbances to affect the passenger comfort while increasing riding capabilities and performing a smooth drive. While the purpose of the suspension system is to provide a smooth ride in the car and to help maintain control of the vehicle over rough terrain or in case of sudden stops, increasing ride comfort results in larger suspension stroke and smaller damping in the wheel hop mode [1].1 The vibrations cause the operator’s whole body to vibrate, as opposed to just one part of their body, says their hand or foot. Harmful effects of whole-body…show more content…
The simulation results were compared with the ones of the passive suspensions through step and sinusoidal excitation of the seat suspension system for the currently used suspension systems. On the other hand, vehicle suspension systems aim to improve the vehicle performance which involves: Ride comfort, handling, road holding, suspension deflection, and static deflection. Sun [7] presented an optimum concept to design ‘‘road-friendly’’ vehicles with the recognition of pavement loads as a primary objective function of vehicle suspension design. The results showed that tires with high air pressure and suspension systems with small damping will lead to large tire loads. The parameter sensitivity analysis of a passenger/seat model that can be used for ride comfort assessments was discussed by Brogioli et al [8]. The most important conclusion of their research is that the parameters referring to posture have proved to influence ride comfort to a great extent. Other relevant but less important parameters are: the stiffness and damping of the seat, the geometry of the seat, the size and inertia properties of the body segments, and the stiffness and damping of the different parts of the human body.…show more content…
[9], for the dynamic analysis of suspension seats with passive, semiactive and active dampers. It is concluded that the comfort performance of a suspension seat with semi-active and active dampers can be considerably enhanced by 20–30%. The spring and damper settings that will ensure optimal ride comfort of an off-road vehicle, on different road profiles and at different speeds has been investigated by Uys et al. [10]. It is found that optimizing for a combined driver plus rear passenger seat weighted root mean square vertical acceleration rather than using driver or passenger values only, returns the best results.For efficiency, genetic algorithm is employed to search for the parameters like damping ratio and spring constant to achieve an optimum trade off among ride comfort, handling quality, and suspension stroke simultaneously for random input. A dynamic model of an on-highway truck seat is proposed by Hassanin et al. [11], to improve a highway truck seat. Genetic algorithms are used to obtain the coefficients of a seat suspension system controller parameters. The results showed that an active suspension using genetic algorithms has successfully managed

More about Vehicle Deflection System

Open Document