Title :
Non-fragile sliding mode control for flexible air-breathing hypersonic vehicles
Author :
Hu, Xiaoxiang ; Karimi, Hamid Reza ; Zhang, Zehao ; Gao, Huijun
Author_Institution :
Harbin Inst. of Technol., Harbin, China
Abstract :
The non-fragile sliding mode tracking control design problem for a flexible air-breathing hypersonic vehicles (FAHVs) is investigated in this paper. A linearized model is constructed with respect to a trim point for the nonlinear, dynamically coupled simulation model of the FAHVs with external disturbance, then a reference model is designed and a tracking error model is proposed. An integral sliding surface is designed, and then the non-fragile H∞ controller design problem for the sliding mode dynamics is discussed. sufficient condition is derived for the existence of such a controller in the presence of unmatched disturbance. A SMC law is derived to guarantee the reachability of the specified sliding surface. Finally, An illustrative simulation on the nonlinear dynamics of FAHVs is given to show the effectiveness of the proposed control methods.
Keywords :
H∞ control; aircraft control; control system synthesis; nonlinear control systems; reachability analysis; tracking; variable structure systems; FAHV; SMC law; control methods; dynamically coupled simulation model; external disturbance; flexible air-breathing hypersonic vehicles; integral sliding surface design; linearized model; nonfragile H∞ controller design problem; nonfragile sliding mode control; nonfragile sliding mode tracking control design; nonlinear dynamics; nonlinear model; reachability; reference model design; sliding mode dynamics; sufficient condition; tracking error model; trim point; unmatched disturbance; Adaptation models; Aerodynamics; Atmospheric modeling; Mathematical model; Robustness; Vehicle dynamics; Vehicles;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2012 7th IEEE Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4577-2118-2
DOI :
10.1109/ICIEA.2012.6360853