Title :
Use of Frequency-Dependent RGA for Control Structure Selection
Author :
Skogestad, Sigurd ; Hovd, Morten
Author_Institution :
Chemical Engineering, Norwegian Institute of Technology (NTH), N-7034 Trondheim, Norway
Abstract :
The paper reviews existing and presents some new results for the frequency-dependent RGA. It is shown how frequency-dependent plots of the relative gains, ¿, and the closed-loop disturbance gains, ¿, can be used to evaluate the achievable performance (controllability) of a plant under decentralized control. These controller-independent measures give constraints on the design of the individual loops.
Keywords :
Chemical engineering; Chemical technology; Controllability; Distributed control; Frequency; Gain measurement; Open loop systems; Paper technology; Performance gain; Steady-state;
Conference_Titel :
American Control Conference, 1990
Conference_Location :
San Diego, CA, USA
