基于Petri网的四性综合建模与评价方法研究

发布时间：2018-05-24 13:55

本文选题：复杂系统 + 四性　；参考：《南京航空航天大学》2015年硕士论文

【摘要】：随着科学技术快速发展,高可靠、好维修、易测试、保安全他已成为民用飞机研制、生产和使用中的普遍要求。然而,现有的四性设计技术之间是割裂和相互孤立的,造成工程实际中提出了大量重复的设计要求,且要求不统一,给系统设计增加了很多重复工作,而且相互独立开展的四性工作得出的数据不能很好的相互协调和支持,优化、整合、综合权衡困难,难于满足型号研制对功能、性能设计评价的需要。对四性工作关联关系和四性技术参数进行研究。首先对可靠性、安全性、维修性、测试性的工作项目、输入输出情况进行分析,得出可靠性、安全性、测试性、维修性之间的异同点。其次,梳理可靠性、安全性、维修性、测试性的基本参数,并根据参数的选取给出数据的传递关系。其中,可靠性以工作项目为基础,通过梳理工作项目之间的关系给出可靠性参数的选取及数据传递关系;安全性以安全性评估作为主要的评估方法,以故障率作为基本参数,梳理相关的安全性参数及数据传递关系;维修性以常用的参数作为选取对象,梳理维修性内部的数据传递关系以及与可靠性和测试性之间的数据传递关系;测试性参数的选取以要反映对装备故障或异常的可测试和易测试能力为目的,通过所选取的参数梳理了相关参数间数据传递关系。建立复杂系统的四性一体化模型和最优方案寻找算法。通过对问题的深入研究,引入了可行性的概念,建立了四性一体化模型,解决了现有技术中存在四性无法综合权衡、多种设计方案选取难的问题,最终寻得的最优设计方案使整个复杂系统同时具备可靠性高、维修性好、测试性高和安全性高等优点。建立复杂系统的四性综合评估模型和评价方法。基于前面三章的分析,将可靠性、维修性、测试性和安全性等四性评估引入评估体系,从而建立了完整的四性一体化综合评估模型,利用有色Petri网的强大描述能力,将复杂系统的四性状态分为三类,同时给这三类状态进行分别染色。最终,完成整个四性一体化综合评估工作。提出的复杂系统四性建模与评价方法可以实时了解系统所处的四性状态,完成了对整个系统进行综合权衡设计与评估的工作,提高了系统评估的准确性和实时性。
[Abstract]:With the rapid development of science and technology, high reliability, good maintenance, easy testing and safety, he has become a common requirement in the development, production and use of civil aircraft. However, the existing four-sex design techniques are fragmented and isolated each other, resulting in a large number of repeated design requirements in engineering practice, and the requirements are not uniform, adding a lot of repetitive work to the system design. Moreover, the data obtained from the four-sex work which is independent of each other can not coordinate and support each other well. It is difficult to optimize, integrate and weigh the difficulties. It is difficult to meet the needs of the functional and performance design evaluation of the model development. The relationship and technical parameters of four sex work were studied. First of all, the reliability, safety, maintainability, testability of the work items, input and output analysis, the reliability, security, testability, maintainability of the similarities and differences between. Secondly, the basic parameters of reliability, safety, maintainability and testability are combed, and the data transfer relations are given according to the selection of parameters. Among them, reliability is based on work items, through combing the relationship between work items, the selection of reliability parameters and data transfer relationship are given, and the safety evaluation is the main evaluation method, and the failure rate is the basic parameter. The maintainability chooses the commonly used parameters as the selection object, combs the data transfer relations within the maintainability and the data transfer relations with reliability and testability. In order to reflect the testability and testability of equipment faults or anomalies, the data transfer relationship between the selected parameters is combed out through the selection of testability parameters for the purpose of reflecting the testability and testability of equipment faults or anomalies. The four-sex integration model and the optimal scheme searching algorithm for complex systems are established. Through the in-depth study of the problem, the concept of feasibility is introduced, and the four-sex integration model is established, which solves the problem that the four properties cannot be comprehensively weighed in the existing technology, and many design schemes are difficult to select. The optimal design scheme obtained finally makes the whole complex system have the advantages of high reliability, good maintainability, high testability and high security at the same time. The four-sex comprehensive evaluation model and evaluation method of complex system are established. Based on the analysis of the previous three chapters, the reliability, maintainability, testability and safety are introduced into the evaluation system, and a complete integrated comprehensive evaluation model of four properties is established, which utilizes the powerful description ability of colored Petri nets. The four trait states of the complex system were divided into three groups, and the three kinds of states were dyed separately at the same time. Finally, the four-sex integration comprehensive evaluation work is completed. The proposed four-property modeling and evaluation method for complex systems can understand the four states of the system in real time, and complete the design and evaluation of the whole system, and improve the accuracy and real-time performance of the system evaluation.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V221

【相似文献】