This article has selected useful diagnostic parameters according to the running condition of PZ12V190B diesel, and built fuzzy vectors of this parameter by using the subjection function to establish a technological co...This article has selected useful diagnostic parameters according to the running condition of PZ12V190B diesel, and built fuzzy vectors of this parameter by using the subjection function to establish a technological condition. By using a statistical method the standard vector has been obtained, so the diesel technological level can be determined by calculating the closing degree between the fuzzy vector and the standard fuzzy vector.展开更多
So many potential risks can be identifed for application of trenchless technology especially using microtunneling methods.Unexpected changes in ground conditions,such as encountering boulders,tree roots,ground water a...So many potential risks can be identifed for application of trenchless technology especially using microtunneling methods.Unexpected changes in ground conditions,such as encountering boulders,tree roots,ground water and man-made structures such as old foundations are the principal geotechnical risks,which affect the selection of an appropriate microtunnel boring machine.On the other hand,the performance of each microtunneling technique will differ while encountering such conditions.Hence,predicting the potential hazards provides a better safety and risk management plan.In this study,a couple of potentially hazardous situation,which are commonly associated with ground conditions,were identifed and investigated.A decision tree aid methodology was proposed based on geotechnical risk assessment for selection of proper microtunneling technique.Based on the approach the most appropriate microtunneling technique has the minimum risk level either before or after hazards mitigation measures.In order to check the effciency of the approach in practice,selection of microtunnel boring machine for Hamadan sewerage pipeline project was evaluated.Accordingly,an earth pressure balance(EPB)MTBM was selected for the project.展开更多
综述了航空电子设备故障预测与健康管理(Prognostic and Health Management,PHM)技术的发展、应用价值与系统结构,探讨了航空电子设备故障检测、故障诊断和故障预测等关键技术的研究现状,分析了PHM关键技术在航空电子设备应用中面临的挑...综述了航空电子设备故障预测与健康管理(Prognostic and Health Management,PHM)技术的发展、应用价值与系统结构,探讨了航空电子设备故障检测、故障诊断和故障预测等关键技术的研究现状,分析了PHM关键技术在航空电子设备应用中面临的挑战,并对未来发展方向进行了展望。通过综合运用传感器技术、数据分析和人工智能等现代科技手段,PHM技术能够实现对航空电子设备健康状态的实时监控和预测,进行预防性维护,为提高航空装备安全和减少维护费用提供有力支持。展开更多
文摘This article has selected useful diagnostic parameters according to the running condition of PZ12V190B diesel, and built fuzzy vectors of this parameter by using the subjection function to establish a technological condition. By using a statistical method the standard vector has been obtained, so the diesel technological level can be determined by calculating the closing degree between the fuzzy vector and the standard fuzzy vector.
文摘So many potential risks can be identifed for application of trenchless technology especially using microtunneling methods.Unexpected changes in ground conditions,such as encountering boulders,tree roots,ground water and man-made structures such as old foundations are the principal geotechnical risks,which affect the selection of an appropriate microtunnel boring machine.On the other hand,the performance of each microtunneling technique will differ while encountering such conditions.Hence,predicting the potential hazards provides a better safety and risk management plan.In this study,a couple of potentially hazardous situation,which are commonly associated with ground conditions,were identifed and investigated.A decision tree aid methodology was proposed based on geotechnical risk assessment for selection of proper microtunneling technique.Based on the approach the most appropriate microtunneling technique has the minimum risk level either before or after hazards mitigation measures.In order to check the effciency of the approach in practice,selection of microtunnel boring machine for Hamadan sewerage pipeline project was evaluated.Accordingly,an earth pressure balance(EPB)MTBM was selected for the project.
文摘综述了航空电子设备故障预测与健康管理(Prognostic and Health Management,PHM)技术的发展、应用价值与系统结构,探讨了航空电子设备故障检测、故障诊断和故障预测等关键技术的研究现状,分析了PHM关键技术在航空电子设备应用中面临的挑战,并对未来发展方向进行了展望。通过综合运用传感器技术、数据分析和人工智能等现代科技手段,PHM技术能够实现对航空电子设备健康状态的实时监控和预测,进行预防性维护,为提高航空装备安全和减少维护费用提供有力支持。
