船舶柴油机故障诊断系统知识库柔性设计  

Flexible Design of Knowledge Base in Fault Diagnosis System for Marine Diesel Engine

作　　者：陈锋[1] 郑元璋[1] 

机构地区：[1]上海船舶运输科学研究所航运技术与安全国家重点实验室,上海200135

出　　处：《中国航海》2011年第1期26-29,43,共5页Navigation of China

摘　　要：介绍了船舶柴油机故障诊断系统实现知识库柔性设计的一种解决方案。系统采用船舶综合监控系统服务器基础数据库上的热工参数,通过神经网络技术实现对柴油机的运行状态进行自动实时诊断。诊断所用的故障知识保存在客户端知识库上,对用户开放,当故障模型发生变化时,只需做简单的知识库更新,而无需对主程序做任何修改,便于系统功能扩展。另外,诊断软件提供了灵活的界面用于处理神经网络的权值阈值。实际应用表明,诊断系统具有很大柔性,能处理不同的故障模型,针对不同诊断对象适应性强。The flexible design of knowledge base in fault diagnosis system for marine diesel engine is introduced.The system analyzes the real-time thermal parameters in the server database of a ship integrated monitoring system and determines the operation status of the diesel engine with a neural network.In the system,the knowledge for fault diagnosis is stored in the knowledge base at the client station and open to users.The system can conveniently adapt to variation of fault models through changing the knowledge base without reprogramming.Besides,a user friendly interface is provided to set values of weights and biases of the neural network.Practical operation proves that the system has great flexibility in dealing with different fault models and suites a variety of diagnostic targets.

关 键 词：船舶、舰船工程 柴油机 故障诊断 柔性设计 数据库 知识库 神经网络 

分 类 号：U664.121[交通运输工程—船舶及航道工程]