Title :
Calculation of the stability ball for discrete-time control systems
Author :
Aguirre, Gabriel ; Chapellat, Hervé ; Bhattacharyya, S.P.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
The stability of a discrete-time control system subject to structured perturbations is studied. The coefficients of the closed-loop characteristic polynomial of the system are assumed to be affine functions of a set of real plant parameters. The closed-loop characteristic polynomial is rewritten as a linear combination of polynomials, and, using these polynomials, the minimum l/sub 2/ variation of parameter values before the characteristic polynomial becomes unstable is calculated.<>
Keywords :
closed loop systems; discrete time systems; polynomials; stability; closed-loop characteristic polynomial; discrete-time control systems; real plant parameters; stability ball; structured perturbations; Closed loop systems; Discrete time systems; Polynomials; Stability;
Conference_Titel :
Systems Engineering, 1989., IEEE International Conference on
Conference_Location :
Fairborn, OH, USA
DOI :
10.1109/ICSYSE.1989.48724
