Title :
Robust two-degree-of-freedom H∞ control of a seeker scan loop system
Author :
Lee, H.-P. ; Schmidt, D.K.
Author_Institution :
Agency for Defense Dev., Taejon, South Korea
fDate :
3/1/2002 12:00:00 AM
Abstract :
A parameter-dependent model of a seeker scan loop system is introduced. A new approach to modelling real-valued parameter uncertainties and designing H∞ robust controllers is presented, considering the effect of parameter uncertainties on closed-loop stability and performance, which is formulated within the framework of the standard H∞ optimisation problem by combining the conventional mixed sensitivity and model-matching problems with the robust stability problem. The proposed design procedure is applied to a seeker scan loop system with uncertainties in three parameter values. It is shown that the designed two-degree-of-freedom H ∞ controller offers good performance and robustness properties, and that the proposed design scheme is very effective for the robust control of a seeker scan loop system
Keywords :
H∞ control; H∞ optimisation; closed loop systems; control system synthesis; feedback; missile guidance; performance index; robust control; sensitivity; target tracking; uncertain systems; H∞ optimisation problem; H∞ robust controller design; closed-loop stability; controller performance; feedback control system design; gyroscope; missile guidance; mixed sensitivity problem; model-matching problem; parameter-dependent model; real-valued parameter uncertainties; robust 2-DOF H∞ control; robust stability problem; seeker scan loop system; target tracking;
Journal_Title :
Control Theory and Applications, IEE Proceedings -
DOI :
10.1049/ip-cta:20020097
