Short Description
When an event occurs regularly following a repetitive pattern, one may want to allow occurrences to take place late according to the pattern but within a bounded time window, and without impact on the subsequent occurrences. This authorized delay is called jitter.
Links to TADL2 concepts
A bound on the jitter can be represented within a Repetition constraint as there is a specific parameter for it. It can also be defined for some constraints derived from Repetition, namely the Periodic, Sporadic and Pattern constraints.
· RepetitionConstraint
· PeriodicConstraint
· SporadicConstraint
· PatternConstraint
Abstraction level specific list of applicable events
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Context Specific Example
An acquisition of wheel sensors must be done every 10 ms with a jitter of at most 0.5 ms. Denote acq the event describing the acquisition. The constraint PERIODIC(acq, 10, 0.5, 0) would accept trace 1 but not trace 2.
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