Full-car active suspension based on H₂/generalised H₂ output feedback control
by Shuyou Yu; Fei Wang; Jing Wang; Hong Chen
International Journal of Vehicle Design (IJVD), Vol. 68, No. 1/2/3, 2015

Abstract: This paper establishes a 15 degree-of-freedom (DOF) full-car simulation model for the car Hongqi HQ3. The effectiveness of the model is evaluated by comparison of the real data of HQ3 with the data of the model. Output feedback control of the active suspension is designed based on a half-car model. High quality ride comfort is achieved by minimising the H₂ norm from disturbances on the road to the vertical acceleration and the pitch acceleration of the car, while safety constraints such as suspension dynamic travels, static/dynamic load ratios and normalised load flows are guaranteed by the generalised H₂ norm. The 15 DOF full-car model, together with the left and the right output feedback controllers, form a closed-loop system. The simulation result of the full-car shows that the active suspension can greatly reduce the vertical acceleration, pitch acceleration and roll acceleration as well as satisfy all constraints.

Online publication date: Tue, 11-Aug-2015

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