项目名称: 基于协同设计的高速列车制动系统维护感知建模与嵌入诊断推理
项目编号: No.51205291
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 机械工程学科
项目作者: 牛刚
作者单位: 同济大学
项目金额: 25万元
中文摘要: 本项目以高速列车制动系统为研究对象,针对该类机电系统的功能与结构日趋复杂化,所导致的系统内部失效耦合机理分析难度增大,服役过程中监测与维护所需的信息量急剧增加,故障诊断与安全评估越来越需要对系统总体进行把握的情况,拟开展车载监测与诊断推理基础技术研究。以协同设计的研究思路针对该类复杂机电系统开展基于功能流的测试性分析、基于虚拟样机的设计与功能仿真、以及基于定性描述和定量描述混合建模的嵌入诊断推理技术研究,充分考虑系统服役过程中的维护感知与自诊断能力需求,将其融入到系统功能设计初期,研究适用于复杂机电系统详细概念研发阶段的一体化设计方法,在降低开发成本和周期的同时,赋予制动系统实时健康感知和故障隔离定位的最大潜能,进一步确保高速列车的运行安全性、可靠性和维修性,使"制动"这一关键系统具备最优的健康维护感知能力和快速准确的嵌入诊断推理能力。
中文关键词: 键合图;基于模型的故障诊断;基于模型的失效预测;机车电空制动;
英文摘要: High-speed train braking system is necessary to own maintenance aware and diagnosis performances because of its function importance and structure complexity which result in hard analysis about failure mechanisms of braking system. With the increasing number of information requirements on inservice monitoring and maintenance, fault diagnosis and safety assessment needs design in system-lever. The objective of this study is to develop methodology of onboard monitoring and diagnosis reasoning by integrative design that is based on function flow testability analysis, virtual prototyping modeling and onboard hybrid reasoning. As a result, safety, reliability and maintenablity of high-speed train can be improved with the design performances of health aware and fault isolation, so that endue the braking system with optimal health monitoring and accurate onboard diagnosis.
英文关键词: Bong Graph;Model-based Fault Diagnosis;Model-based Failure Prognostics;Locomotive Electro-Pneumatic Brake;