Most of the maintenance optimization models in condition-based maintenance(CBM) consider the cost-optimal criterion, but few papers have dealt with availability maximization for maintenance applications. A novel optim...Most of the maintenance optimization models in condition-based maintenance(CBM) consider the cost-optimal criterion, but few papers have dealt with availability maximization for maintenance applications. A novel optimal Bayesian control approach is presented for maintenance decision making. The system deterioration evolves as a three-state continuous time hidden semi-Markov process. Considering the optimal maintenance policy, the multivariate Bayesian control scheme based on the hidden semi-Markov model(HSMM) is developed, the objective is to maximize the long-run expected average availability per unit time. The proposed approach can optimize the sampling interval and control limit jointly. A case study using Markov chain Monte Carlo(MCMC)simulation is provided and a comparison with the Bayesian control scheme based on hidden Markov model(HMM), the age-based replacement policy, Hotelling’s T2, multivariate exponentially weihted moving average(MEWMA) and multivariate cumulative sum(MCUSUM) control charts is given, which illustrates the effectiveness of the proposed method.展开更多
随着故障预测与健康管理(prognostics and health management,PHM)技术的快速发展和实际应用的不断深入,PHM相关标准的建立就显得非常重要。首先给出了PHM的概念和技术内涵,指明PHM标准应该规范的内容,并介绍了国内外的研究现状;其次综...随着故障预测与健康管理(prognostics and health management,PHM)技术的快速发展和实际应用的不断深入,PHM相关标准的建立就显得非常重要。首先给出了PHM的概念和技术内涵,指明PHM标准应该规范的内容,并介绍了国内外的研究现状;其次综述了现有国外标准化组织和机构中与相关的标准,并按照视情维修(CBM),故障预测与健康管理(PHM),综合航天器健康管理(IVHM)和状态使用和管理系统(HUMS)对PHM相关标准进行了深入分析;最后对我国PHM标准开发提出了几点建议,并指明了下一步工作的重点和研究方向。展开更多
在分析各种传统维修方式优缺点的基础上,引入了基于状态的维修(Condition Based Maintenance,CBM)中现行的几个技术标准IEEE Std1451、IEEE Std1232和ISO13373—1和CBM开放系统体系结构OSA-CBM的七大组成模块,指出了未来CBM的发展应集中...在分析各种传统维修方式优缺点的基础上,引入了基于状态的维修(Condition Based Maintenance,CBM)中现行的几个技术标准IEEE Std1451、IEEE Std1232和ISO13373—1和CBM开放系统体系结构OSA-CBM的七大组成模块,指出了未来CBM的发展应集中于OSA-CBM的第五、六模块的研究。并针对这两模块给出了一种利用建立数学模型进行设备健康预测及维修决策支持的、可行的研究思路和结构框架。展开更多
基金supported by the National Natural Science Foundation of China(51705221)the China Scholarship Council(201606830028)+1 种基金the Fundamental Research Funds for the Central Universities(NS2015072)the Funding of Jiangsu Innovation Program for Graduate Education(KYLX15 0313)
文摘Most of the maintenance optimization models in condition-based maintenance(CBM) consider the cost-optimal criterion, but few papers have dealt with availability maximization for maintenance applications. A novel optimal Bayesian control approach is presented for maintenance decision making. The system deterioration evolves as a three-state continuous time hidden semi-Markov process. Considering the optimal maintenance policy, the multivariate Bayesian control scheme based on the hidden semi-Markov model(HSMM) is developed, the objective is to maximize the long-run expected average availability per unit time. The proposed approach can optimize the sampling interval and control limit jointly. A case study using Markov chain Monte Carlo(MCMC)simulation is provided and a comparison with the Bayesian control scheme based on hidden Markov model(HMM), the age-based replacement policy, Hotelling’s T2, multivariate exponentially weihted moving average(MEWMA) and multivariate cumulative sum(MCUSUM) control charts is given, which illustrates the effectiveness of the proposed method.
文摘随着故障预测与健康管理(prognostics and health management,PHM)技术的快速发展和实际应用的不断深入,PHM相关标准的建立就显得非常重要。首先给出了PHM的概念和技术内涵,指明PHM标准应该规范的内容,并介绍了国内外的研究现状;其次综述了现有国外标准化组织和机构中与相关的标准,并按照视情维修(CBM),故障预测与健康管理(PHM),综合航天器健康管理(IVHM)和状态使用和管理系统(HUMS)对PHM相关标准进行了深入分析;最后对我国PHM标准开发提出了几点建议,并指明了下一步工作的重点和研究方向。
文摘在分析各种传统维修方式优缺点的基础上,引入了基于状态的维修(Condition Based Maintenance,CBM)中现行的几个技术标准IEEE Std1451、IEEE Std1232和ISO13373—1和CBM开放系统体系结构OSA-CBM的七大组成模块,指出了未来CBM的发展应集中于OSA-CBM的第五、六模块的研究。并针对这两模块给出了一种利用建立数学模型进行设备健康预测及维修决策支持的、可行的研究思路和结构框架。
