Title :
Combined LPV and nonlinear control of an active suspension system
Author :
Gáspár, Péter ; Szederkenyi, Gabor
Author_Institution :
Hungarian Acad. of Sci., Budapest
Abstract :
In this paper, the design of a two-level controller is proposed for active suspension systems. The required control force is computed by applying a high-level controller, which is designed using a linear parameter varying (LPV) method. The suspension structure contains nonlinear components, i.e., the dynamics of the dampings and the springs and the actuator dynamics. The model is augmented with weighting functions specified by the performance demands and the uncertainty assumptions. The actuator generating the necessary control force is a nonlinear state-dependent switching system, for which a low-level backstepping-based force-tracking controller is designed.
Keywords :
automotive components; damping; force control; linear systems; nonlinear control systems; springs (mechanical); suspensions (mechanical components); time-varying systems; tracking; active suspension system; actuator dynamics; control force; dampings; high-level controller; linear parameter varying method; low-level backstepping-based force-tracking controller; nonlinear control; nonlinear state-dependent switching system; springs; two-level controller; Actuators; Automatic control; Control design; Control systems; Damping; Force control; Nonlinear control systems; Nonlinear dynamical systems; Robust stability; Vehicle dynamics;
Conference_Titel :
Industrial Electronics, 2007. ISIE 2007. IEEE International Symposium on
Conference_Location :
Vigo
Print_ISBN :
978-1-4244-0754-5
Electronic_ISBN :
978-1-4244-0755-2
DOI :
10.1109/ISIE.2007.4374601
