failure rate calculation method of automation equipment based on fitting correlation

The invention discloses a failure rate calculation method of automation equipment based on fitting correlation, which solves the problem of lacking of original reliability data of secondary equipment.At first, that actual service age is calculate according to the state evaluation result, and the equivalent service age is calculate according to the estimated actual service age, then the failure rate function is fitted in sections, and the failure rate of the equipment is calculated by substituting the equivalent service age of the equipment into the failure rate function fitted in sections. This method has the characteristics of less sample data, clear physical concept and strong verifiability, which lays the foundation for building the accumulation mechanism of basic reliability data suchas secondary equipment defects. 本发明公开了种基于拟合关联的自动化设备故障率计算方法，解决了二次设备可靠性原始数据缺乏的问题。本发明首先根据状态评价结果推算实际役龄，并根据推算的实际役龄推算等效役龄，再对故障率函数进行分段拟合，将设备等效役龄代入分段拟合的故障率函数中计算出设备故障率。该方法具有要求样本数据少、物理概念清晰，可检验性强等特点，为构建二次设备缺陷等基础可靠性数据的积累机制奠定了基础。