专家系统在切割机故障诊断中的理论与应用

The Application of Expert System in Fault Diagnosis of Efflux Cutting Mach

本文介绍一个用于切割机电气故障的专家诊断系统。专家诊断系统与切割机控制系统通过信号联络线同步运行 ,能够实时地在线地检测和诊断步进电机的驱动电路。专家诊断系统以单片机 80 31为核心 ,采用产生式规则建立知识库 ,用广度优先搜索法进行向后推理 ,运用并行推理方式提高搜索速度。样机运行结果表明 ,专家诊断系统达到了设计要求。

In this paper, an expert diagnostic system (EDS) for detecting electrical system faults in a efflux cutting mach is introduced. The expert diagnostic system works in synchronism with the extra high-pressure control system by the handshaking signal line, which can, in real time and on-line, detect and diagnose the stepper motor drive circuit. The 8031 single-chip computer is the center of the expert diagnostic system in which knowledge base is set up by production rules, backward reasoning is made by the breadth-first search and the searching speed is increased by using the parallel search. The executing results of the prototype show that the expert diagnostic system meets all design requirements.