基于弹性指标的可重构系统性能分析及优化

The research of this project focuses on the reconfigurable systems which is based on the resilience index and guided by the importance measures. The project puts forward the performance evaluation methods for reconfigurable systems based on the resilience index. Then, the reconfiguration process and corresponding resources configuration method of for reconfigurable systems are described. Thirdly, the importance measures of reconfigurable systems based on the resilience index is proposed. Finally, the performance optimization model for reconfigurable system is established. The performance optimization algorithm based on the resilience importance measure is also developed. The correctness and effectiveness of the proposed models and methods will be verified though some approaches, such as mathematical proof, numerical simulation, and engineering examples, etc. With the support of the performance parameters for reconfigurable system, the proposed method can be applied to the fields of power grid, aerospace, and railway transit engineering, etc..The main contributions and innovations of this project are shown as follows. (1) We combine the resilience index with system performance evaluation index while the accuracy and applicability of system performance analysis methods will be improved through analyzing the system performance in different stages. (2) By considering the system stage, the method of improving system performance and the parameters related to component performance synthetically, the calculation method of importance measure is more effective which enriches the theoretical system of important measure. (3) The optimization algorithm based on the resilience importance can apply the weaknesses information of reconfigurable system performance correctly, which provide the theory support for the performance optimization of the reconfigurable systems.

本项目以可重构系统为对象，以弹性指标为基础，以重要度方法为指导，提出一套基于弹性指标的可重构系统性能评估方法，分析可重构系统重构方式及资源配置方法，建立可重构系统弹性重要度分析方法，构建基于弹性的可重构系统性能优化模型，提出基于弹性重要度的可重构系统性能优化算法，并通过数学证明、算例仿真、实例分析等途径验证上述模型及方法的正确性和有效性，从而为电力网络、航空航天及轨道交通等领域可重构系统性能分析及优化提供理论与方法支持。.本项目特色与创新之处：（1）将弹性指标与系统评估指标相结合，对系统不同阶段的性能进行分析，提升系统性能分析方法的准确性和适用性；（2）将系统阶段、系统性能提升方式以及与组件性能相关的参数结合，提高了重要度计算的有效性，丰富了重要度理论体系；（3）基于弹性重要度分析方法的优化算法，可以科学和准确利用可重构系统性能薄弱环节信息，为可重构系统性能优化提供了理论支撑。

本项目以可重构系统为研究对象，以弹性指标为基础，以重要度方法为指导，以优化理论为依据，提出了一套基于弹性指标的可重构系统性能分析及优化方法。.首先，对系统所处的外界环境因素以及系统类型进行分析，将系统的弹性指标与可重构系统的性能评估指标相结合，开展基于弹性的可重构系统性能评估指标分析，进行基于弹性的可重构系统性能评估指标筛选，建立基于弹性指标的系统性能评估模型，突破了传统性能评估方法仅从系统可靠性的角度对系统性能进行衡量的限制；其次，对系统不同阶段的性能进行分析，进行可重构系统重构方式选择，开展可重构系统资源配置可行性分析，提出可重构系统资源配置方案，结合系统阶段分别确定出基于各个阶段的系统性能评估方法，提升系统性能分析方法的准确性和适用性，提升了可重构系统性能分析的准确性和适用性；第三，从系统性能的角度对组件参数变化引起的可重构系统性能影响进行具体分析，提出了弹性重要度分析方法，并分别对单目标优化问题和多目标优化问题分别建立不同的弹性重要度计算方法，最终确定影响系统性能的关键因素，提高了重要度计算的有效性，丰富了重要度理论体系；最后，综合分析实际可重构系统性优化决策过程中包含的决策变量、目标变量及约束条件，分别建立可重构系统单目标和多目标优化模型，并基于基础弹性重要度和综合弹性重要度建立一套基于弹性重要度的可重构系统性能优化算法，通过弹性重要度指导算法搜索方向，降低了搜索过程中的随机性，提高了优化效率。.本项目研究成果已在某型涡轴航空发动机检验试车过程中实现应用，其年产量从两位数提升到了三位数，解决了我国某型直升机批产缺“心”的“卡脖子”问题。项目研究成果后期还可以在航空装备系统、智能制造系统、疫情管控系统等国内外重大工程的可靠性优化、风险分析等领域进一步推广。