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故障诊断知识表示是知识处理中最基本的一个问题，其目的在于把领域诊断专家的知识以一定的表达范式表示出来。针对电站锅炉的故障诊断问题，提出了面向对象基于框架、规则、模型与过程集成的广义故障树知识表示方法。它是在故障树的基础上，以诊断对象为中心，应用面向对象技术将多种单一的知识表示方法集成一种混合的表示形式，并给出电站锅炉系统广义故障树诊断对象描述实例。这种知识表示方法具有简洁、灵活、透明，且易于诊断推理的特点。
Fault diagnosis knowledge representation is the most basic problem in knowledge processing. The purpose of fault diagnosis knowledge representation is to express the knowledge of domain diagnosis experts in a certain expression paradigm. Aiming at the fault diagnosis of power station boiler, a generalized fault tree knowledge representation method based on object-oriented framework, rule, model and process integration is proposed. Based on the fault tree, the object of diagnosis is the center, and a variety of single representation methods are integrated into a hybrid representation using object-oriented technique. An example is given to describe the diagnostic object of generalized fault tree in power plant boiler system. This method of knowledge representation is characterized by simplicity, flexibility, transparency and easy diagnosis and reasoning.