Fuzzy Control of Hydraulically Interconnected Suspension with Configuration Switching

This paper presents a study on fuzzy control of hydraulically interconnected suspension with configuration switching based on the detected dominant vehicle body motion-mode. To reduce the energy consumption of the active system, the control has to be made less ambitious. Selecting the dominant vehicle motion-mode as control objectives in real time is considered as an effective strategy to balance the energy consumption with the control performance. The modeling of the vehicle dynamic suspension is discussed first. Then a motion-mode detection method and the switching control strategy are developed. And then, three fuzzy controllers are designed for the vehicle body bounce, pitch and roll motion-modes, respectively. Finally, simulation on the full-car suspension model is performed to validate the proposed study. The obtained results indicate that the designed controllers can effectively reduce the pitch motion and prevent rollover, and simultaneously achieve good suspension performance.