Title :
Decentralized variable structure control for active suspensions based on a full-car model
Author :
Park, Jong H. ; Kim, Young S.
Author_Institution :
Sch. of Mech. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
A decentralized variable structure controller (DVSC) is designed for active suspensions of vehicles based on a 7-degree-of-freedom full-car model. Its nominal stability and stability robustness to parameter variations are assured through stability analysis. The performance of the DVSC is compared with that of a LQR controller in computer simulations. From the simulations, it is found that active suspensions with the DVSC reduce the acceleration of the sprung mass in the heaving, rolling, and pitching directions when the car is driven on a normal road or through an unequal bump. The suspension stroke and road holding capability are also compared under the assumption of equal power consumption
Keywords :
automobiles; control system analysis; decentralised control; robust control; variable structure systems; vibration control; 7-degree-of-freedom full-car model; LQR controller; active suspensions; decentralized variable structure control; full-car model; heaving; nominal stability; pitching; road holding capability; rolling; stability analysis; stability robustness; suspension stroke; Acceleration; Actuators; Computer simulation; Mechanical variables control; Roads; Robust stability; Sliding mode control; Stability analysis; Suspensions; Vehicles;
Conference_Titel :
Control Applications, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Trieste
Print_ISBN :
0-7803-4104-X
DOI :
10.1109/CCA.1998.728460
