Structurally fixed modes in decentralised systems. Part 1: Two control stations

Structurally fixed modes in decentralised systems. Part 1: Two control stations

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By using a structural analysis based on a digraph representation, the conditions are examined for the existence of structural controllability and observability in decentralised control systems. These are related to the existence of structurally fixed modes in a system with two control stations. A generalisation to the case of N control stations is given in Part 2 of this paper.


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Structurally fixed modes in decentralised systems. Part 2: General case
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