A fuzzy feedback scheduling algorithm for restraining resource-constrained systems jitter

Resource constraints and load variations cause the uncertainties of sampling and execution times of the tasks. The sampling jitter and input-output jitter are inevitable and affect system performance seriously. This paper proposes a fuzzy feedback scheduling algorithm for restraining jitters. The task periods are adjusted periodically with respect to resources allocation and timing jitters. Then the limited resources are allocated reasonably and the jitters are reduced effectively such that the quality of control is improved. The simulation experiments demonstrate the effectiveness of the proposed algorithm.