VFSM Execution Model
A subset of all defined input names, which can exist only in a certain situation, is called virtual input (VI). For instance temperature can be either "too low", "good" or "too high". Although there are three input names defined, only one of them can exist in a real situation. This one builds the VI.
A subset of all defined output names, which can exist only in a certain situation is called virtual output (VO). VO is built by the current action(s) of the VFSM.
The behaviour specification is built by a state table which describes all details of a single state of the VFSM.
The VFSM executor is triggered by VI and the current state of the VFSM. In consideration of the behaviour specification of the current state, the VO is set.
Figure 2 shows one possible implementation of a VFSM executor. Based on this implementation a typical behaviour characteristics must be considered.
Read more about this topic: Virtual Finite-state Machine
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