关键词: 混合结构树, 故障诊断, 专家系统, 列车自动门

Abstract: Based on structure tree and fault tree of complex product, the concept of hybrid structure tree and the corresponding intelligent fault-diagnosis method were proposed. Some basic contents, which shared similar characteristics, were constructed as diagnosis kernel, and these contents were differentiated from concrete diagnosis objectives so as to make it suitable for different objects. Aimed at knowledge management in intelligent diagnosis, a set of coding rules was proposed to implement effective management and utilization of diagnosis knowledge by making use of existing advanced coding management methods. Finally, the corresponding inference algorithms of fault diagnosis were developed. All above-mentioned methods have been applied in research and development of the fault-diagnosis system for automatic door of high-speed train.

Key words: hybrid structure tree, fault diagnosis, expert system, train automatic door