In this paper, a new methodology is proposed to optimize a passive suspension system of a full vehicle system based on ride and handling. In passive suspension design, the conflicting design objectives are the ride comfort and handling performances. The ride comfort is defined as the level of comfort experienced by the passenger in a form of numerical values i.e. weighted root mean square (RMS) of acceleration (ISO 2631). The acceleration is measured when the car travels on a Class C random road profile adopted from ISO 8606:1995 standard. Meanwhile, handling performance is defined by quality of handling, which relate to subjective feeling of human driver and also objective measurement of the vehicle characteristics. Impulse steers maneuver (ISO7401) is employed to measure the required objectives defining handling performance, which included the RMS roll gain, phase angle of yaw rate at 0.2 and at 0.6 Hz, phase angle of lateral acceleration at 1 Hz and ratio of yaw rate gain at resonant frequency against the static yaw rate gain. These objectives will be minimized through multi-objective optimization methodology, which involves sampling technique, and regularity model based on multi-objective estimation of distribution algorithm (RM-MEDA) to solve more than 100 dimensional spaces of design parameters. This methodology showed promising results in optimizing full vehicle suspension design compared to the conventional workflow of suspension tuning.


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    Design Optimization of Full Vehicle Suspension Based on Ride and Handling Performance

    Yuen, T.J. / Rahizar, R. / Azman, Z.A.M. et al. | British Library Conference Proceedings | 2013


    Design Optimization of Full Vehicle Suspension Based on Ride and Handling Performance

    Yuen, T.J. / Rahizar, R. / Azman, Z.A.M. et al. | British Library Conference Proceedings | 2013


    Design Optimization of Full Vehicle Suspension Based on Ride and Handling Performance

    Yuen, Tey Jing / Rahizar, Ramli / Mohd Azman, Zainul Abidin et al. | Springer Verlag | 2012


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