DocumentCode :
1811020
Title :
Advanced nonlinear robust controller design for high-performance servo-systems in large radar antennas
Author :
Garcia-Sanz, Mario ; Ranka, Trupti ; Joshi, Bhal Chandra
Author_Institution :
EECS Dept., Case Western Reserve Univ., Cleveland, OH, USA
fYear :
2011
fDate :
20-22 July 2011
Firstpage :
177
Lastpage :
182
Abstract :
This paper explores a novel robust/nonlinear control system design methodology for high-performance servo-systems in large radar antennas. The dynamics of servo-systems of large radio antennas typically vary according to azimuth and elevation angles, temperature, friction, speed and acceleration, leading to nonlinearities and plant parameter uncertainty. The new controller design methodology combines robust QFT techniques with nonlinear switching strategies, going beyond the classical linear limitations of conventional controllers. As shown in the paper, high performance for robust reference tracking and robust disturbance rejection is achieved. The controller performance is demonstrated by using a realistic/simplified rigid body model of a large radar antenna.
Keywords :
acceleration; control system synthesis; friction; nonlinear control systems; radar antennas; robust control; servomechanisms; temperature; time-varying systems; acceleration; azimuth angle; controller performance; elevation angle; friction; high-performance servo-system; large radar antenna; large radio antenna; linear limitation; nonlinear robust controller design; nonlinear switching; plant parameter uncertainty; rigid body model; robust QFT technique; robust disturbance rejection; robust reference tracking; servo-system dynamics; speed; temperature; Load modeling; Radar antennas; Radar tracking; Robustness; Switches; QFT control; large radio antenna; nonlinear switching control; robust control; servo-systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Aerospace and Electronics Conference (NAECON), Proceedings of the 2011 IEEE National
Conference_Location :
Dayton, OH
ISSN :
0547-3578
Print_ISBN :
978-1-4577-1040-7
Type :
conf
DOI :
10.1109/NAECON.2011.6183098
Filename :
6183098
Link To Document :
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