Dynamic Behavior of Suspension System

In present book 7 Degree Of Freedom mathematical models is developed for full car vehicle model and validated. Semi-active suspension system is evaluated for half car model for multi utility car, based on modified skyhook theory. Passive suspension has limitation that it has fix damping coefficient, so design of passive suspension can optimize for particular road condition. By soft damping we can get good ride comfort and better isolation of spring mass by allow large suspension deflection but it reduce handling performance due to unnecessary suspension deflection which reduce the safety. Alternatively by hard damping, it reduces unnecessary suspension deflection to improve handling performance but, reduce ride comfort due to poor isolation of spring mass. To improve ride quality and vehicle handling performance, Active Suspension System or Semi active suspension system is used. Semi Active Suspension system is used to reduce cost, weight and power consumption compare to Active Suspension System.