A study on active suspension system using time delay control

Time Delay Control (TDC) method was proposed as a promising technique in the robust control area, where the plants have unknown dynamics with parameter variations and substantial disturbances are present. In this paper, the TDC technique is applied to design the force loop controller of an electro-hydraulic active suspension system. Based on the quarter-car active suspension system model, the TDC is designed, and the PID-controller is also designed for comparison. The simulation results show that the TDC is the effective means in controlling the hydraulic system and it can be utilized as one of the control candidates for the active vehicle suspension.