Title : 
Extension of the inverse Nyquist method
         
        
        
            Author_Institution : 
University of Manchester Institute of Science & Technology, Control Systems Centre, Manchester, UK
         
        
        
        
        
        
        
            Abstract : 
Rosenbrock´s stability theorem for linear multivariable control systems is extended to include unstable plants and systems with dynamics in the feedback path.
         
        
            Keywords : 
Nyquist diagrams; linear systems; multivariable control systems; stability;
         
        
        
            Journal_Title : 
Electronics Letters
         
        
        
        
        
            DOI : 
10.1049/el:19700551