Adaptive Vehicle Suspension System Using Microcontroller and Electro-hydraulic actuator

Abstract

The design of suspension system of today’s light vehicles is getting very crit ical, owing to unbalancing in sharp turns and irregular road pattern which affect the comfort of the passengers and safety. This project deals with the de sign and development of an active suspension system for a light car. The idea of this adaptive system is to compensating the rough road profiles be adding a hydraulic damper controlled by microcontroller. The system in this thesis had been intendeded for Mitsubishi Triton GLX Plus (4×4), and includes the mechanical assembly, hydraulic circuit, control circuit and the controller program. Kinematics theory is been used to set up the active suspension system dynamic model, Through a Simulink software, simulation model was constructed. Different road surfaces has been modeled for the conventional and the modified systems models. The outputs displacement response com parisons between the old suspension and the modified system had recorded, and the obtained results had taken to the design stage. The closed-loop con trol algorithm in the Simulink model is interfaced to an Arduino Mega 2560 microcontroller through Deploy-To-hardware feature on the matlab software, to be used in the implementation stage at future works.