Abstract
In today’s scenario, due to increase in sales of Sports Utility Vehicles (SUV’s) more and more people are opting for off road drive. The main challenge is to improve the performance based on handling and comfort. Hence the conventional static spring and damper system are being modified to accommodate semi-active and active systems. In this paper to study the effectiveness of active suspension system, a quarter car model is developed and Fuzzy control strategy is proposed to reduce displacement of chassis. Hydraulic actuator is used to provide active control in the suspension system of the quarter car model. The fuzzy logic controller is interfaced with the hardware system by LabVIEW software. For connecting the hardware with LabVIEW software Arduino is used. The comparison of active and passive suspension system shows that the chassis displacement is decreased by 30% in case of active suspension system whereas the settling time decreases by 69%.
Highlights
In recent years of post-liberalization, the Indian roads seem to be flooded with a greater number of international cars
For simulation the quarter car model was represented in the MATLAB Simulink model where the fuzzy controller was imported in the Simulink model and results for displacement were calculated for a bump of 100mm, 50mm and 30mm
It is seen that the settling time in case of active suspension system is decreased by 88%
Summary
In recent years of post-liberalization, the Indian roads seem to be flooded with a greater number of international cars. Before liberalization the Indian car industry was not offering any special safety features to Indian customers though these were compulsory in countries like the U.S.A, U.K, etc. Soon after the liberalization as the world giants of car industries began to Indian market, the Indian consumer is offered with latest luxurious and safety features like active suspension system, seat belts, side-impact bars, air bags, collapsible steering and etc. In order to maintain a good tyre - road contact, the acceleration of the sprung mass has to be reduced and adequate deflection in suspension should be provided. An effective suspension system should reduce the acceleration of sprung mass and provide sufficient deflection to maintain tyre -road contact. For the comfort and safety of Revised Manuscript Received on February 15, 2020. * Correspondence Author
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