安全、健康和环境2024，Vol.24Issue(12)：21-26,6.DOI:10.3969/j.issn.1672-7932.2024.12.004
Weibull分布下二乘N取K系统的剩余寿命预测研究
Research on Remaining Life Prediction of Two times N for K System under Weibull Distribution
王昊1
作者信息
- 1. 化学品安全全国重点实验室,山东青岛 266104||中石化安全工程研究院有限公司,山东青岛 266104
- 折叠
摘要
Abstract
In the safety instrument system of petro-chemical plants,instruments are often redundantly arranged to improve safety and reliability.However,there is currently limited research on the commonly used two times N-to-K redundant structure of instru-ment systems.A residual life prediction method for redundant systems with instruments following Weibull distribution was proposed to address this situation.The instrument life was described using a three pa-rameter Weibull distribution,and the relevant param-eters were solved using maximum likelihood method and genetic algorithm.Then,based on the failure characteristics of the two times N for K system,the remaining life distribution and expectation of the re-dundant system were derived.Finally,simulation ex-periments were conducted on the life of the two times 4 for 2 redundant instrument.The experimental re-sults showed that the proposed method had a MAPE of 18%for predicting the remaining life,which can provide support for the development of instrument ma-intenance plans.关键词
安全仪表系统/二乘N取K系统/剩余寿命预测/Weibull分布/数学期望Key words
safety instrumented system/two times N for K system/remaining life prediction,Weibull dis-tribution/mathematic expectation分类
能源科技引用本文复制引用
王昊..Weibull分布下二乘N取K系统的剩余寿命预测研究[J].安全、健康和环境,2024,24(12):21-26,6.
