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二元决策图(binary decision diagram,BDD)方法和直接仿真法在评估测控资源规模大、阶段任务多的测控任务的可靠性时都存在局限性。从分析单个阶段任务的可靠性损失量出发,提出一种测控任务可靠性分析的解析模型,并基于强制法快速获取解析模型所需的输入数据。通过案例,验证了混合式分析法相对BDD方法和直接仿真法在时效性上的优势。这种结合解析模型与快速仿真法的混合式分析方法为解决测控资源规模大、阶段任务数量多的测控任务可靠性的评估问题提供了可行的手段。
The binary decision diagram (BDD) method and the direct simulation method have limitations in evaluating the reliability of the measurement and control tasks with large scale of measurement and control resources and many phase tasks. Based on the analysis of the reliability loss of a single phase task, this paper proposes an analytical model of the reliability analysis of the measurement and control task and quickly obtains the input data required for the analytical model based on the mandatory method. Through case studies, we verify the timeliness of the hybrid analysis method relative to the BDD method and the direct simulation method. The hybrid analysis method combining the analytic model and the rapid simulation method provides a feasible method for evaluating the reliability of the measurement and control tasks with large scale of measurement and control resources and large number of phase tasks.