Modelling and analysis of skyhook and Fuzzy logic controls in semi-active suspension system

Developing vehicles with semi-active suspension by replacing passive system has been a great interest in the field of automotive industry. Maintaining stability and performance in spite of uncertainties in working environment is a prior concern for designing successful control system. Skyhook control policy is adapted for giving good ride performance. This paper introduces an optimum method for controlling vibration of semi-active suspension system in a quarter car system. Fuzzy logic controller developed on the basis of skyhook algorithm is compared with on-off and continuous skyhook control in time domain. The results show that Fuzzy logic gives better vibration control and along with PID velocity control gives better ride comfort than its counterparts.