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该文简要介绍了采用ＰＤＣｐｒｏｌｏｇ语言开发的一个高档微机故障诊断专家系统。该系统基于一种新的不确定推理模型，采用正反双向推理机制综合进行高效推理，不仅提供了智能的知识获取工具，而且还具有时推理过程的解释和帮助机制。该系统将推理机与知识库相分离，实现动态模块化的知识库管理与分层推理，并且具有清晰美观、便于操作的人机界面，可以方便地实现对两大故障类、八大故障部位进行有效合理的诊断。
This article briefly introduces a high-end microcomputer fault diagnosis expert system developed by PDCprolog. The system is based on a new model of uncertain reasoning, which uses both forward and reverse bidirectional reasoning mechanisms to synthesize high-efficiency reasoning. It not only provides intelligent knowledge acquisition tools, but also has the explanation and help mechanism of the inference process. The system separates the reasoning machine from the knowledge base to realize the dynamic and modular knowledge base management and layered reasoning. The system has a clear, beautiful and easy-to-operate man-machine interface, which can be conveniently implemented on two major fault categories and eight fault locations Effective and reasonable diagnosis.