Modeling And Controller Design For An Active Car Suspension System Using Quater Car Model

Mohd Syazwan Naim, Mohamad Basir (2012) Modeling And Controller Design For An Active Car Suspension System Using Quater Car Model. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The suspension system is a system that connects the wheels of an automobile vehicle to its body. It will absorb the energy of the vertically accelerated wheels and allow the car‟s body to ride undisturbed and improve the riding quality and handling of the car when taking the corners or driving on different road conditions. The active suspension system is one of the suspension systems that used by the modern cars nowadays. It has the ability to absorb, store and dissipate energy to the system. In this project, the Fuzzy Logic Controller has been developed to control the active car suspension system for quarter car model and it has been compared with the Linear Quadratic Regulator (LQR). This project compared the active car suspension system with the passive suspension system. The responses of the systems were simulated by using Matlab software. The Simulink in the Matlab was used to write the program for desired controllers. From the simulations that has been done, the Fuzzy Logic Controller give the best results in body acceleration, body velocity and suspension deflection compared to LQR and passive suspension system. This showed the improvement of the car‟s ride comfort and handling.

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