The sequence of activities within a concurrent system may occur in an unobserved and unspecified manner. The consequence of such behaviours isthat the specification of the system is incomplete. In order to analyse the possible behaviour of sequences, issues involving the timing of activities have to be investigated with a sensitive system clock operating in false-time. A scenario for the system under investigation has to be developed that presents an indication of possible weak areas in the design. The concurrent behav our of industrial systems is discussed with respect to false-time.
KeywordsManufacturing Cell Concurrent System Finite State Automaton Weld Robot Clock State
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