Title :
Nonlinear large disturbance attenuation controller design based on backstepping method
Author :
Liu Ting ; Jiang Nan ; Jing Yuanwei
Author_Institution :
Inst. of Inf. Sci. & Eng., Northeastern Univ., Shenyang, China
Abstract :
In this paper, a novel robust nonlinear control strategy based on backstepping technology is investigated for a class of strongly nonlinear control problem via. The advantage of the proposed method lies on the use of the minimax optimal control theory during classical backstepping design procedure. Focus is given on the effect of unknown disturbances on the output of the system. Existing treatment of the disturbances is often characterized by conservativeness in the estimation of the upper bound of the disturbance or inequality scaling. While this paper applies the minimax method to estimate the highest degree of critical disturbance that can be endured by the system, which reduces effectively the conservativeness and ensures good robustness. Simulation results demonstrate the effectiveness of the proposed control methodology.
Keywords :
control nonlinearities; control system synthesis; estimation theory; minimax techniques; nonlinear control systems; optimal control; robust control; backstepping design procedure; conservativeness reduction; critical disturbance degree estimation; minimax optimal control theory; nonlinear large-disturbance attenuation controller design; robust nonlinear control strategy; strongly-nonlinear control problem; system output; unknown disturbances; Attenuation; Backstepping; Control systems; Educational institutions; Nonlinear systems; Robustness; Transient analysis; Backstepping; Large Disturbance Attenuation; Minimax;
Conference_Titel :
Control and Decision Conference (CCDC), 2013 25th Chinese
Conference_Location :
Guiyang
Print_ISBN :
978-1-4673-5533-9
DOI :
10.1109/CCDC.2013.6560925