讨论了基于热力状态参数的循环流化床燃烧锅炉状态监测与故障诊断专家系统ＣＦＢＢＥＸ－ＰＴＳ的推理控制机制。它是数据驱动的前向推理链和目标驱动的后向推理链２种基本推理控制策略的有效组合。独具特色的是，其内核包含了候选生成、矛盾检测、局部诊断、约束隔离和约束传播等互相联系和支持的高级诊断技术。该文提出的故障判定原则适用于带反馈回路的热力对象。图７表４参６ The reasoning control mechanism of CFBBEX-PTS, which is based on the thermal state parameters, is discussed in the condition monitoring and fault diagnosis expert system of circulating fluidized bed combustion boiler. It is a valid combination of two basic reasoning control strategies for data-driven forward inference chains and goal-driven backward inference chains. Uniquely, its kernel includes advanced diagnostics that interrelate and support candidate generation, conflict detection, partial diagnostics, constraint isolation, and constraint propagation. The principle of fault decision proposed in this paper is suitable for the thermal object with feedback loop. Figure 7 Table 4 参 6