Title :
Nonlinear active suspension with preview
Author :
Karlsson, NiMas ; Dahleh, Mohammed ; Hrovat, Davor
Author_Institution :
Dept. of Mech. & Environ. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
Optimal control with preview is investigated for a quarter-car, two-degree-of-freedom vehicle model, with a quadratic and quartic cost function. By solving a set of Euler-Lagrange equations, an optimization algorithm is derived to find the optimal control assuming complete knowledge of the disturbance (infinite time preview). The results give us merely an upper bound on the performance when using preview control, but suggest that nonlinear finite time preview controllers can contribute to substantial improvements in vehicle ride and/or handling performance
Keywords :
automobiles; damping; nonlinear control systems; optimal control; predictive control; stability; vibration control; Euler-Lagrange equations; nonlinear active suspension; nonlinear finite time preview controllers; optimal control; optimization; quadratic cost function; quarter-car 2-DOF vehicle model; quartic cost function; Acceleration; Axles; Nonlinear equations; Optimal control; Performance analysis; Road vehicles; Sensor systems; Springs; Tires; Wheels;
Conference_Titel :
American Control Conference, 2001. Proceedings of the 2001
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-6495-3
DOI :
10.1109/ACC.2001.946273
