Title :
Robustness analysis of feedback linearisation with robust state estimation for a nonlinear missile model
Author :
Norton, Peter ; Prempain, Emmanuel
Author_Institution :
Dept. of Eng., Univ. of Leicester, Leicester, UK
Abstract :
A nonlinear missile model with time-varying uncertain parameters is controlled with a simple feedback linearisation and time-scale separation design, with synthesis based on the nominal model and full state feedback. The closed-loop system is then represented as a linear fractional transformation (LFT). A robust H∞ filter is designed for the controlled plant, to estimate unknown states. Robust stability of the closed-loop system is then verified by using a scaled linear differential inclusion (LDI) technique.
Keywords :
H∞ filters; closed loop systems; control system synthesis; linearisation techniques; missile control; nonlinear control systems; robust control; state estimation; state feedback; LDI technique; LFT; closed-loop system; controlled plant; feedback linearisation; linear fractional transformation; nominal full state feedback model; nonlinear missile model; robust H∞ filter design; robust stability; robustness analysis; scaled linear differential inclusion technique; time-scale separation design; time-varying uncertain parameters; unknown state estimation; Actuators; Closed loop systems; Linear matrix inequalities; Robust stability; Robustness; Stability analysis; Uncertainty;
Conference_Titel :
Control Conference (ECC), 2013 European
Conference_Location :
Zurich
