针对建筑自动化系统(BAS)故障诊断日趋困难的问题,将专家系统与故障树分析法相结合,提出一种基于专家系统的BAS故障诊断方法。采用框架和规则相结合的知识表示法,建立相应的知识库。设计基于“框架规则+不确定性推理”的推理模式,给出专家诊断系统的实现方法。实验结果表明,该系统能提高推理结果的可用性。 In view of the increasingly difficult problems of building automation system (BAS) fault diagnosis, a fault diagnosis method based on expert system is proposed by combining expert system with fault tree analysis. Using the combination of framework and rules of knowledge representation, the establishment of the corresponding knowledge base. The design is based on the reasoning mode of “frame rule + uncertainty reasoning ”, and gives the realization method of expert diagnosis system. Experimental results show that the system can improve the usability of inference results.