Observations on solving discrete-event control problems: patterns and strategies
نویسنده
چکیده
An observational study of solving discrete-event supervisory control problems is described. Five graduate students with knowledge of discrete-event system control were asked to think aloud while solving two supervisory control problems. The problem-solving sessions were recorded using audio and video equipment, and subsequently analysed using protocol analysis. Patterns and strategies in solving discreteevent supervisory control problems are identified and described, such as the role of control specifications and supervisors, the selection of events and the significance of controllability, the representation of discreteevent system elements and relations in the interface of control software, the flexibility necessary for different styles of problem solving, and the techniques for verification of solutions. The implications for teaching discrete-event systems and for designing discrete-event software interfaces are discussed.
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