Abstract
In this paper, a 2-DOF experimental equipment of active suspension is developed. A control strategy based on output feedback and frequency shaping is proposed and realized on this model. Output feedback can reduce the number of states that should be measured and frequency shaping techenology is used on performance index to improve ride quality. Several types of measurement version are researched and optimized. Test results indicate that this strategy is feasible and ride quality can be greatly improved without deteriorating other aspects of performance index.