Hybrid Systems in Process Control
Journal article, 1996

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.

Author

Bengt Lennartson

Department of Control Engineering

Michael Tittus

Department of Control Engineering

Bo Egardt

Department of Control Engineering

Stefan Pettersson

Department of Control Engineering

IEEE Control Systems

1066-033X (ISSN)

Vol. 16 5 45-56

Subject Categories

Computer and Information Science

DOI

10.1109/37.537208

More information

Latest update

3/23/2018