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Beschreibung:
Engine control applications include tasks with variable rate dependent behaviour (VRB-tasks) that adapt their behavior as a function of the engine speed. For such tasks, the frequency of activation, execution times and deadlines depend on the rotation speed of the engine. In recent years exact methods for the analysis of such VRB-tasks have been introduced, where the task is represented by the accumulated execution requirement in relation to the time interval. In this paper we identify the periodic behaviour of this curve and determine the recurrent term. The result is the first method to have precise knowledge of the exact execution requirement of VRB-tasks for arbitrary high intervals.