H-infinity robust controller design and comparison with LQG, PID controllers for an expendable launch vehicle

1996 ◽  
Author(s):  
Guang Xing ◽  
Peter Bainum
Keyword(s):  
Controller Design ◽  
Launch Vehicle ◽  
Pid Controllers ◽  
Robust Controller ◽  
H Infinity ◽  
Robust Controller Design

H-Infinity Robust Control Methodology of Multi-Variable NCSs

2010 ◽  
Vol 97-101 ◽  
pp. 2373-2376
Author(s):  
Li Sheng Wei ◽  
Ming Jiang ◽  
Qi Gong Chen ◽  
Min Rui Fei
Keyword(s):  
Control Systems ◽  
Controller Design ◽  
Networked Control Systems ◽  
Lyapunov Stability Theory ◽  
Linear Matrix ◽  
Matrix Inequalities ◽  
Robust Controller ◽  
H Infinity ◽  
Control Methodology ◽  
Robust Controller Design

This note investigates H-infinity robust controller design for uncertain multi-variable networked control systems with disturbance. The complete mathematical model is derived. And the sufficient condition for asymptotical stability is analyzed by using 2nd Lyapunov stability theory combined with free-weighting matrices techniques. The existence of such a controller is given in terms of the solvability of linear matrix inequalities. The efficacy and feasibility of the proposed methods is shown by presenting simulation results.

Robust Control of Formation Dynamics for Autonomous Underwater Vehicles in Horizontal Plane

2012 ◽  
Vol 134 (3) ◽  
Author(s):  
Huizhen Yang ◽  
Fumin Zhang
Keyword(s):  
Formation Control ◽  
Controller Design ◽  
Autonomous Underwater Vehicles ◽  
Underwater Vehicles ◽  
Loop Formation ◽  
Robust Controller ◽  
H Infinity ◽  
Three Degree Of Freedom ◽  
Jacobi Transform ◽  
Robust Controller Design

This paper presents a novel robust controller design for formation control of autonomous underwater vehicles (AUVs). We consider a nonlinear three-degree-of-freedom dynamic model for the horizontal motion of each AUV. By using the Jacobi transform, the horizontal dynamics of AUVs are explicitly expressed as dynamics for formation shape and formation center, and are further decoupled by feedback control. We treat the coupling terms as perturbations to the decoupled system. An H-infinity state feedback controller is designed to achieve robust stability of the closed loop formation and translation dynamics. By incorporating an orientation controller, the formation shape under control converges and the formation center tracks a desired trajectory simultaneously. Simulation results demonstrate the effectiveness of the controllers.

QFT Based Robust Controller Design for Launch Vehicle Autopilot

2001 ◽  
Vol 34 (15) ◽  
pp. 531-535
Author(s):  
V.R. Lalithambika ◽  
S. Dasgupta ◽  
M. Laila Beebi
Keyword(s):  
Controller Design ◽  
Launch Vehicle ◽  
Robust Controller ◽  
Robust Controller Design

A Modified Homotopy Method and H∞ Robust Controller Design

2014 ◽  
Vol 39 (8) ◽  
pp. 1374-1380
Author(s):  
Bin LIU ◽  
Jiu-Qiang SUN ◽  
Zhi-Qiang ZHAI ◽  
Zhuo LI ◽  
Chang-Hong WANG
Keyword(s):  
Controller Design ◽  
Homotopy Method ◽  
Robust Controller ◽  
Robust Controller Design
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