Statistical inference for a Wiener-based degradation model with imperfect maintenance actions under different observation schemes
APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY(2022)
摘要
This paper studies the statistical inference in a degradation model with imperfect maintenance. Technological or industrial devices subject to degradation undergo maintenance actions that reduce their degradation level. The underlying degradation process is a Wiener process with drift. Maintenance effects are assumed to be imperfect, described by an Arithmetic Reduction of Degradation (ARD1$$ AR{D}_1 $$) model. The system is regularly inspected and the degradation levels are measured. Four different observation schemes are considered so that degradation levels can be observed between maintenance actions as well as just before or just after maintenance times. The paper studies the estimation of the model parameters under the four observation schemes. Maximum likelihood estimators are derived for each scheme. The quality of the estimations is assessed and the observation schemes are compared through an extensive simulation and performance study.
更多查看译文
关键词
degradation modeling, imperfect maintenance, observation scheme, statistical inference
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要