H∞ Control of a Novel Low-Cost Roll-Plane Active Hydraulically Interconnected Suspension: An Experimental Investigation of Roll Control under Ground Excitation 2013-01-1238
In order to make the active suspension more affordable, a novel low-cost active hydraulically interconnected suspension is developed, assembled and tested onto a sport utility vehicle. H∞ roll control strategy is employed to control vehicle body's roll motion. The hydraulic suspension model used for deriving the H∞ controller is estimated experimentally from the testing data. The active suspension model is then combined with the half-car model through their mechanical-hydraulic interface in the cylinders. The weighting function design of the H∞ control is provided. On a 4-post-test rig, the active suspension with H∞ control is validated with several road excitations. The test rig and experimental setup are explained and the obtained results are compared. The effectiveness of the designed H∞ controller is verified by the test data, with a considerable roll angle reduction in the three tests presented.
Citation: Zhu, S., Wang, L., Zhang, N., and Du, H., "H∞ Control of a Novel Low-Cost Roll-Plane Active Hydraulically Interconnected Suspension: An Experimental Investigation of Roll Control under Ground Excitation," SAE Int. J. Passeng. Cars - Mech. Syst. 6(2):882-893, 2013, https://doi.org/10.4271/2013-01-1238. Download Citation
Sangzhi Zhu, Lifu Wang, Nong Zhang, Haiping Du
Univ. of Technology Sydney, Univ. of Wollongong
SAE 2013 World Congress & Exhibition
SAE International Journal of Passenger Cars - Mechanical Systems-V122-6EJ, SAE International Journal of Passenger Cars - Mechanical Systems-V122-6