Comfort parameters tuning for vehicle suspension pitch motion

Azmi, Muhammad Aliff Isyraq (2017) Comfort parameters tuning for vehicle suspension pitch motion. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The goal of this project is to analyse the value spring stiffness and damping in order to improve the comfort on the vehicle. Suspension system is the mechanism that apply between the tire and the body of the vehicle. Suspension system also act as mechanism to absorb the undesirable force that exerted on the tire from transmit to the body of the vehicle. Therefore, to reduce the undesirable force from uneven road, the spring stiffness and damping value on the suspension should be tuning in order to improve the comfort for passenger in the vehicle. In tuning process, it should be test on the various spring stiffness and damping value. In order to analyse the performance on each spring stiffness and damping value, it will be run the simulation on three type of vehicle which are Sedan, Hatchback and Sport Utility Vehicle (SUV). In addition, before run the simulation the Four Degree of Freedom (DOF) ride model should create by using Matlab/Simulink based on theoretical equation of motion and need to verify with CarSimEd. The 4 DOF ride model will be simulate on various value of spring stiffness and damping until it produces a result of pitch motion and vertical body acceleration. From the result, it can be analyse the optimal value of spring stiffness and damping that suitable with each of the vehicle in order to improve the comfort on the vehicle.

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