Title :
A hybrid control of active suspension system using H∞ and nonlinear adaptive controls
Author :
Nguyen, Tan Tien ; Bui, Trong Hieu ; Tran, Thien Phuc ; Kim, Sang Bong
Author_Institution :
Dept. of Mech. Eng., Pukyong Nat. Univ., Pusan, South Korea
Abstract :
This paper presents a hybrid control of active suspension system for quarter-car model with two-degree-of-freedom by using H∞ and nonlinear adaptive control method. Suspension dynamics is linear and treated by H∞ method which guarantees the robustness of closed loop system under the presence of uncertainties and minimizes the effect of road disturbance to the system. The nonlinearity of the hydraulic actuator is treated by a nonlinear adaptive controller based on back-stepping control method. Simulation results are given both frequency and time domains to verify the effectiveness of the designed controllers
Keywords :
H∞ control; adaptive control; automobiles; closed loop systems; nonlinear control systems; robust control; transport control; vibration control; H∞ control; active suspension system; back-stepping control method; car suspension system; closed loop system robustness; frequency domain simulation; hybrid control; hydraulic actuator nonlinearity; nonlinear adaptive control; quarter-car model; suspension dynamics; time domain simulation; two-degree-of-freedom; Adaptive control; Closed loop systems; Control systems; Hydraulic actuators; Nonlinear control systems; Nonlinear dynamical systems; Programmable control; Roads; Robustness; Uncertainty;
Conference_Titel :
Industrial Electronics, 2001. Proceedings. ISIE 2001. IEEE International Symposium on
Conference_Location :
Pusan
Print_ISBN :
0-7803-7090-2
DOI :
10.1109/ISIE.2001.931577
