Introducing discrete-event control concepts and state-transition methodology into control system curricula

A significant academic concern is discussed in terms of introducing the study of methods of discrete-event control in hierarchical systems. This is an area with a blend of computer and control system concepts that is often avoided (or perhaps lost between areas) in undergraduate engineering programs. Applications to factory automation may involve very extensive and critical design considerations, and this area is often an important concern to practicing engineers. The techniques are applicable to a broad range of system design, including systems that provide both discrete and continuous actions such as robots and machine tools. Discrete-action concepts using state-transition techniques are readily assimilated into an undergraduate control systems program, and basic concepts are discussed in terms of introducing this type of program into both the classroom and laboratory. Several variations of state-transition techniques are described, and the various techniques are compared with examples utilizing state-transition diagrams, Petri nets, and state program tables. With the application of digital techniques expanding control concepts in various directions, this is an interdisciplinary area that should be considered to be a fundamentally important part of control system studies