Title :
Comments on "Output feedback stabilization for uncertain systems: constrained Riccati approach"
Author_Institution :
Digital Media Res. Lab., LG Electron. Inc., Seoul, South Korea
Abstract :
For original paper, by Cheng, see ibid., vol.43, p.81-4 (1998). In the above paper, the constrained Riccati problem (CRP) has been proposed to deal with mismatched uncertainty by extending the concept of the constrained Lyapunov problem. In this note, we show the solvability condition for the CRP only gives a solution for the class of square systems not for the nonsquare systems.
Keywords :
Lyapunov methods; Riccati equations; feedback; stability; uncertain systems; CRP; constrained Lyapunov problem; constrained Riccati problem; mismatched uncertainty; nonsquare systems; output feedback stabilization; solvability condition; square systems; uncertain systems; Matrix decomposition; Output feedback; Riccati equations; Singular value decomposition; Sufficient conditions; Uncertain systems; Uncertainty;
Journal_Title :
Automatic Control, IEEE Transactions on
