Title :
Directional stability radius-a stability analysis tool for uncertain polynomial systems
Author :
Kawabata, Keishi ; Mori, Takehiro ; Kuroe, Yasuaki
Author_Institution :
Kyoto Inst. of Technol., Japan
Abstract :
Coefficients of characteristic polynomials for parametrically uncertain systems are allowed to perturb to some extent. Stability radius is a useful tool to analyze the stability for the systems. To enhance its usefulness, we modify stability radius so that it takes into account of given restricted perturbations, which we call directional stability radius. For an application, we show shifted-Hurwitz stability conditions and an analysis method for interval polynomial systems using the directional stability radii.
Keywords :
control system analysis; polynomials; stability criteria; uncertain systems; characteristic polynomial coefficients; directional stability radius; interval polynomial systems; parametrically uncertain systems; shifted-Hurwitz stability conditions; stability analysis tool; uncertain polynomial systems; Costs; Polynomials; Proposals; Stability analysis; Testing; Uncertain systems; Uncertainty;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1195488
