MBSE模式下可靠性安全性测试性一体化建模与评估技术方法

Integration of modeling and evaluation techniques of reliability, safety, testability in MBSE mode

摘要:

随着智能保障、PHM等技术不断深入应用，可靠性、安全性、测试性（以下简称“三性”）的重要性日益凸显，工程中迫切需要解决“三性”重复工作、专业孤岛以及“两张皮”现象。从系统工程出发，首先分析了“三性”主线工作内容，均紧紧围绕功能故障逻辑关系开展，统一建模，实现模型复用。其次，在功能模型基础上映射出故障逻辑关系，更接近故障传递的真实情况，解决“两张皮”现象。然后，全面分析“三性”建模要素和评估内容，对专用部分的信息进行处理，使得“三性”工作不再是孤岛。最后，以燃油系统为例展开了建模评估，基于功能故障逻辑模型，分别进行了可靠性、安全性、测试性建模与评估，实现了模型复用，减少重复工作；专业协同工作，提高了工作效率；紧密结合功能，有效解决“两张皮”现象。

Abstract:

With the in-depth application of intelligent support, PHM and other technologies, the importance of reliability, safety and testability (hereinafter referred to as "three characteristics") is becoming increasingly prominent. It is urgent to solve the "three characteristics" of repetitive work, professional island and "two skin" phenomenon in engineering. From the perspective of system engineering, this paper first analyzes the main work contents of "three characteristics", which are all carried out closely around the logical relationship of function failure, unified modeling and model reuse. Secondly, based on the function model, the logical relationship of fault is projected, which is closer to the real situation of fault transmission and solves the "two skin" phenomenon. Then, the modeling elements and evaluation contents of the "three properties" are comprehensively analyzed, and the information of the special part is processed, so that the "three properties" work is no longer an island. Finally, the fuel system is taken as an example to carry out the modeling and evaluation. Based on the functional fault logic model, the reliability, safety and testability of the fuel system are modeled and evaluated respectively to achieve model reuse and reduce duplication of work; Professional collaboration improves work efficiency; Close combination of functions, solve the "two skin" phenomenon.