DocumentCode :
3570482
Title :
LQR and Fuzzy Gain-Scheduling based attitude controller for RLV within large operating envelope
Author :
Ang Li ; Lingyu Yang ; Jing Zhang ; Chaofan He
Author_Institution :
Sch. of Autom. Sci. & Electr. Eng., Beihang Univ., Beijing, China
fYear :
2014
Firstpage :
51
Lastpage :
56
Abstract :
Considering the strong uncertainties of aerodynamic parameters and atmospheric environment and the large dynamic variation during the Reusable Launch Vehicle (RLV) reentry process, this paper introduces an attitude controller design method which combines Linear Quadratic Regulator (LQR) with Fuzzy Gain-Scheduling (FGS). The whole operating envelope is divided into several design points firstly. And then, control state deviation based LQR controllers are designed for design points respectively. Thereafter the FGS controller is obtained by the use of Takagi-Sugeno (TS) fuzzy model. In the next step, the 6-DoF nonlinear simulation conveys that the stability of off-design points is guaranteed and the proposed controller is capable of maintaining a satisfactory tracking performance under uncertainties among the operating envelope.
Keywords :
attitude control; control system synthesis; entry, descent and landing (spacecraft); fuzzy control; linear quadratic control; scheduling; stability; 6-DoF nonlinear simulation; FGS controller; RLV reentry process; TS fuzzy model; Takagi-Sugeno fuzzy model; aerodynamic parameters; control state deviation based LQR controllers; fuzzy gain-scheduling based attitude controller design; linear quadratic regulator; off-design point stability; reusable launch vehicle; Aerodynamics; Atmospheric modeling; Attitude control; Earth; Force; Mathematical model; Uncertainty; Fuzzy Gain-Scheduling; LQR; RLV reentry; large operating envelope;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Science and Systems Engineering (CCSSE), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-6396-6
Type :
conf
DOI :
10.1109/CCSSE.2014.7224507
Filename :
7224507
Link To Document :
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