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Hybrid Systems in Process Control

Bengt Lennartson (Institutionen för reglerteknik) ; Michael Tittus (Institutionen för reglerteknik) ; Bo Egardt (Institutionen för reglerteknik) ; Stefan Pettersson (Institutionen för reglerteknik)
IEEE Control Systems Magazine (1066-033X). Vol. 16 (1996), 5, p. 45-56.
[Artikel, refereegranskad vetenskaplig]

Modeling and control of hybrid systems, with particular emphasis on process control applications, are considered in this article. Based on a number of observations on typical mixed discrete and continuous features for such applications, a fairly general model structure for hybrid systems is proposed. This model structure, which clearly separates the open-loop plant from the closed-loop system, is suitable for analysis and synthesis of hybrid control systems. To illustrate this, three different approaches for control-law synthesis based on continuous and discrete specifications are discussed. In the first one, the hybrid plant model is replaced by a purely discrete event model, related to the continuous specification, and a supervisor is synthesized applying supervisory control theory suggested by Wonham-Ramadge. The other two methods directly utilize the continuous specification for determination of a control event generator, where time-optimal aspects are introduced as an option in the last approach.



Denna post skapades 2006-09-19. Senast ändrad 2015-05-08.
CPL Pubid: 15789

 

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Institutioner (Chalmers)

Institutionen för reglerteknik (1971-1997)

Ämnesområden

Information Technology

Chalmers infrastruktur