Review of Structural Design and Control Methods for Active Suspension Systems in Automobiles

To gain a thorough understanding of the current research status and main control methods of mainstream active suspension systems in automobiles, this paper introduces three types of active suspension systems: electro-hydraulic active suspension, electropneumatic active suspension, and electromagnetic active suspension.It also analyzes eight control methods for active suspension systems, including PID control, state feedback H_ control, fuzzy control, neural network control, sliding mode control, adaptive control, robust control, and predictive control.By comparing the advantages and disadvantages of different control methods, it is proposed that the current active suspension and its control technology are facing challenges such as high energy consumption, low energy recovery rate, idealized conditions set in simulation studies, the gap between the working conditions provided by test equipment and the actual operation of active suspension, and the difficulty in multi-system integrated control.