基于系统内随机性和确定性故障诊断系统理论体系的架构

摘要

对于任何一个故障诊断系统来说，其数学模型只有考虑时变性、强耦合性、系统的内随机性和确定性才能与物理模型符合得较好。提出了将参数描述成时间序列函数，构建全新的以混沌理论为基础的理论模型，并就模型的时变映射及参量解耦进行分析，在分析的基础上给出了模型的求解方法和步骤，并进行了实例分析。拓展了故障诊断理论体系，为考虑故障诊断系统的内随机性和确定性提供了可能。%To any of fault diagnosis system,when considering time-varying,strong coupling,randomness and cer-tainty,it is beneficial that its mathematical model conforms to physical model. In the paper,the parameter func-tions are described as time sequence,and a new theoretical model based on chaotic theory is built. The model-va-rying mapping and decoupling are analyzed,and the analysis methods and solving steps of the model given. A case analysis is carried out. The innovation work effectively expands the theoretical system of fault diagnosis,and that makes it possible for the randomness and deterministic for fault diagnosis.