New results on the controllability and observability of general composite systems
- 1 February 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Automatic Control
- Vol. 20 (1) , 123-128
- https://doi.org/10.1109/tac.1975.1100857
Abstract
Using Rosenbrock's frequency domain approach [1], necessary and sufficient conditions are obtained for a general series-parallel or feedback composite system to be controllable or/and observable. The conditions are given in terms of the state equations of the composite system and are very simple to compute. Using these results, it is shown that a general series-parallel feedback cascade system is controllable or/and observable for "almost all" interconnection matrices, provided some mild conditions on the subsystems are imposed.Keywords
This publication has 7 references indexed in Scilit:
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