Title : 
Structurally fixed modes in decentralised systems. Part 1: Two control stations
         
        
            Author : 
Momen, S. ; Evans, F.J.
         
        
            Author_Institution : 
University of London, Queen Mary College, Department of Electrical & Electronic Engineering, London, UK
         
        
        
        
        
            fDate : 
11/1/1983 12:00:00 AM
         
        
        
        
            Abstract : 
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.
         
        
            Keywords : 
control system analysis; controllability; directed graphs; linear systems; multivariable control systems; observability; control system analysis; decentralised systems; digraph representation; linear systems; multivariable control systems; observability; structural analysis; structural controllability; structurally fixed modes;
         
        
        
            Journal_Title : 
Control Theory and Applications, IEE Proceedings D
         
        
        
        
        
            DOI : 
10.1049/ip-d.1983.0052