Title :
Comments on "Controllability and observability of composite systems"
Author :
Panda, Siddhartha ; Chen, Chi-tsong ; Desoer, C.
Author_Institution :
State University of New York, Stony Brook, NY, USA
fDate :
4/1/1970 12:00:00 AM
Abstract :
In a recent paper, a sufficient condition for controllability (observability) of two systems connected in tandem having the most general Jordan form of representation was given. In this correspondence, a counterexample to this sufficient condition is given and further assumptions under which this condition is necessary as well as sufficient are indicated.
Keywords :
Algebra; Automatic control; Control systems; Controllability; Eigenvalues and eigenfunctions; Interconnected systems; Observability; Read only memory; Sufficient conditions; Symmetric matrices;
Journal_Title :
Automatic Control, IEEE Transactions on
DOI :
10.1109/TAC.1970.1099403
