Title :
Partial eigenstructure assignment algorithm in flight control system design
Author :
Kim, Hee-Seob ; Kim, Youdan
Author_Institution :
Dept. of Aerosp. Eng., Seoul Nat. Univ., South Korea
fDate :
10/1/1999 12:00:00 AM
Abstract :
A new algorithm is proposed for assigning some of the eigenvalues to the desired places while guaranteeing the stability of the closed-loop system. For partial eigenstructure assignment, the null space approach is utilized, and additional feedback is used to stabilize the remaining eigenvalues. The quadratic type performance index is chosen to determine the additional feedback gain lying on the constrained vector space, and the problem in computing the additional feedback gain is formulated as the linear quadratic regulator problem with output feedback. To demonstrate the effectiveness of the proposed method, a design methodology is illustrated through application on the aircraft
Keywords :
aircraft control; closed loop systems; control system synthesis; eigenstructure assignment; feedback; gradient methods; linear quadratic control; linear systems; performance index; robust control; state-space methods; additional feedback; aircraft application; closed-loop system stability; constrained vector space; design methodology; eigenvalues stabilization; flight control system design; gradient-based optimization; linear quadratic regulator problem; linear time-invariant system; nonlinear matrix equations; null space approach; optimality conditions; output feedback; partial eigenstructure assignment algorithm; quadratic type performance index; robustness; state space form; Aerospace control; Design methodology; Eigenvalues and eigenfunctions; Null space; Output feedback; Performance analysis; Performance gain; Regulators; Stability; Vectors;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
