Abstract
A four step method is presented for the formal specification and synthesis of procedural controllers. These controllers are used in the process industries for safety and alarm operations, interlocking, batch sequencing, etc. The procedural controller is based on a process model that takes the form of a labelled finite state machine, termed a-machine. Desired process behaviour specifications are constructed using Predicate (PL) and Linear Temporal Logic (LTL) formalisms. The resulting controller structure can then be translated into a target sequential control language for implementation. The method is demonstrated with a small example.
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