Federated-learning-based active fault management(AFM)is devised to achieve real-time safety assurance for microgrids and the main grid during faults.AFM was originally formulated as a distributed optimization problem....Federated-learning-based active fault management(AFM)is devised to achieve real-time safety assurance for microgrids and the main grid during faults.AFM was originally formulated as a distributed optimization problem.Here,federated learning is used to train each microgrid’s network with training data achieved from distributed optimization.The main contribution of this work is to replace the optimization-based AFM control algorithm with a learning-based AFM control algorithm.The replacement transfers computation from online to offline.With this replacement,the control algorithm can meet real-time requirements for a system with dozens of microgrids.By contrast,distributed-optimization-based fault management can output reference values fast enough for a system with several microgrids.More microgrids,however,lead to more computation time with optimization-based method.Distributed-optimization-based fault management would fail real-time requirements for a system with dozens of microgrids.Controller hardware-in-the-loop real-time simulations demonstrate that learning-based AFM can output reference values within 10 ms irrespective of the number of microgrids.展开更多
The continuously deteriorating quality of source water is threatening the safety of drinking water in China.Various efforts have been made to update water treatment processes to decrease the pollution problems of drin...The continuously deteriorating quality of source water is threatening the safety of drinking water in China.Various efforts have been made to update water treatment processes to decrease the pollution problems of drinking water,such as protection of drinking water sources,enhance-ment of conventional treatment processes,and development of new or advanced treatment technologies.This paper reviews a variety of protection and remediation methods for drinking water sources,development and application of drinking water treatment technologies,new technologies for special pollutants removal from groundwater,and the latest research progress on water distribution systems in China.展开更多
Safety assurance of automated driving systems must consider uncertain environment perception.This paper reviews litera-ture addressing how perception testing is realized as part of safety assurance.The paper focuses o...Safety assurance of automated driving systems must consider uncertain environment perception.This paper reviews litera-ture addressing how perception testing is realized as part of safety assurance.The paper focuses on testing for verification and validation purposes at the interface between perception and planning,and structures the analysis along the three axes(1)test criteria and metrics,(2)test scenarios,and(3)reference data.Furthermore,the analyzed literature includes related safety standards,safety-independent perception algorithm benchmarking,and sensor modeling.It is found that the realiza-tion of safety-oriented perception testing remains an open issue since challenges concerning the three testing axes and their interdependencies currently do not appear to be sufficiently solved.展开更多
The society promotes the continuous development of science and technology,and people’s living materials have also gradually improved.At the same time,more attention is paid to the safety performance problems such as ...The society promotes the continuous development of science and technology,and people’s living materials have also gradually improved.At the same time,more attention is paid to the safety performance problems such as food inspection and inspection,which is related to the people’s food first,especially the safety and quality problems of food will cause safety risks to the body.Combined with the sampling inspection process of relevant food testing departments,we attach great importance to the sampling inspection and detection of food,effectively reduce the risk of food safety,avoid the risk of social life caused by the food safety problems and the credibility of essential quality of food,explore and research from a scientific point of view.The quality control process of physical and chemical inspection and other related technology and quality control process lay the foundation of food safety guarantee for people’s living and working in peace and contentment.展开更多
基金supported in part by the National Science Foundation under Grants No.OIA-2134840 and ECCS-1810108in part by Department of Energy under Grant No.DE-EE0009341Department of Navy award N00014-20-1-2858 issued by the Office of Naval Research.
文摘Federated-learning-based active fault management(AFM)is devised to achieve real-time safety assurance for microgrids and the main grid during faults.AFM was originally formulated as a distributed optimization problem.Here,federated learning is used to train each microgrid’s network with training data achieved from distributed optimization.The main contribution of this work is to replace the optimization-based AFM control algorithm with a learning-based AFM control algorithm.The replacement transfers computation from online to offline.With this replacement,the control algorithm can meet real-time requirements for a system with dozens of microgrids.By contrast,distributed-optimization-based fault management can output reference values fast enough for a system with several microgrids.More microgrids,however,lead to more computation time with optimization-based method.Distributed-optimization-based fault management would fail real-time requirements for a system with dozens of microgrids.Controller hardware-in-the-loop real-time simulations demonstrate that learning-based AFM can output reference values within 10 ms irrespective of the number of microgrids.
基金This work was supported by the National Natural Science Foundation of China(Grant No.50538090).
文摘The continuously deteriorating quality of source water is threatening the safety of drinking water in China.Various efforts have been made to update water treatment processes to decrease the pollution problems of drinking water,such as protection of drinking water sources,enhance-ment of conventional treatment processes,and development of new or advanced treatment technologies.This paper reviews a variety of protection and remediation methods for drinking water sources,development and application of drinking water treatment technologies,new technologies for special pollutants removal from groundwater,and the latest research progress on water distribution systems in China.
文摘Safety assurance of automated driving systems must consider uncertain environment perception.This paper reviews litera-ture addressing how perception testing is realized as part of safety assurance.The paper focuses on testing for verification and validation purposes at the interface between perception and planning,and structures the analysis along the three axes(1)test criteria and metrics,(2)test scenarios,and(3)reference data.Furthermore,the analyzed literature includes related safety standards,safety-independent perception algorithm benchmarking,and sensor modeling.It is found that the realiza-tion of safety-oriented perception testing remains an open issue since challenges concerning the three testing axes and their interdependencies currently do not appear to be sufficiently solved.
文摘The society promotes the continuous development of science and technology,and people’s living materials have also gradually improved.At the same time,more attention is paid to the safety performance problems such as food inspection and inspection,which is related to the people’s food first,especially the safety and quality problems of food will cause safety risks to the body.Combined with the sampling inspection process of relevant food testing departments,we attach great importance to the sampling inspection and detection of food,effectively reduce the risk of food safety,avoid the risk of social life caused by the food safety problems and the credibility of essential quality of food,explore and research from a scientific point of view.The quality control process of physical and chemical inspection and other related technology and quality control process lay the foundation of food safety guarantee for people’s living and working in peace and contentment.
