DocumentCode :
3572446
Title :
Attitude control law design for moving mass control reentry vehicle based on sliding mode
Author :
ShengZe Chen ; Xuan Zhang ; Ying Hao ; Hua Zhou
Author_Institution :
Res. & Design Center, China Acad. of Launch Vehicle Technol., Beijing, China
fYear :
2014
Firstpage :
627
Lastpage :
632
Abstract :
Due to issues of aerodynamic ablation, complicated mechanical environment and serious nonlinear dynamics, the control system is difficult to achieve high accuracy. For nonlinear dynamics of moving mass control reentry vehicle, a design method based on sliding mode for pitch-yaw channel attitude control is proposed, which improves control accuracy and anti-disturbance capability. According to a reentry vehicle attitude control system, the pitch-yaw channel dynamic model of the nonlinear system is firstly given. Secondly, designed by using backstepping theory, a sliding mode controller with approach law is proposed. Besides, in order to reduce chattering of sliding mode control, an improved sliding mode controller is presented, in which relay characteristics is replaced with continuous functions. Finally, simulation results demonstrate the validity and feasibility.
Keywords :
aerodynamics; attitude control; control system synthesis; nonlinear dynamical systems; space vehicles; variable structure systems; aerodynamic ablation; anti-disturbance capability; attitude control law design; backstepping theory; complicated mechanical environment; control accuracy; design method; moving mass control reentry vehicle; nonlinear dynamics; pitch-yaw channel attitude control; pitch-yaw channel dynamic model; reduce chattering; reentry vehicle attitude control system; sliding mode controller; Accuracy; Aerodynamics; Attitude control; Control systems; Design methodology; Nonlinear dynamical systems; Vehicles; Backstepping design; Moving mass control; Sliding mode control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Intelligent Control and Automation (WCICA), 2014 11th World Congress on
Type :
conf
DOI :
10.1109/WCICA.2014.7052787
Filename :
7052787
Link To Document :
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