Title :
Comments on ´Controllability of periodic systems: continuous and discrete´
Author_Institution :
Sch. of Sci., Northeastern Univ., Shenyang, China
Abstract :
This note shows that necessities of Theorems 1 and 3-5 in the above study cannot be derived by the proof method presented by the authors. Two counterexamples are given to validate the conclusion.
Keywords :
continuous systems; controllability; discrete systems; periodic control; continuous system; discrete system; periodic systems controllability;
Journal_Title :
Control Theory & Applications, IET
DOI :
10.1049/iet-cta.2011.0299
