Aiming at the industry cyber-physical system(ICPS)where Denial-of-Service(DoS)attacks and actuator failure coexist,the integrated security control problem of ICPS under multi-objective constraints was studied.First,fr...Aiming at the industry cyber-physical system(ICPS)where Denial-of-Service(DoS)attacks and actuator failure coexist,the integrated security control problem of ICPS under multi-objective constraints was studied.First,from the perspective of the defender,according to the differential impact of the system under DoS attacks of different energies,the DoS attacks energy grading detection standard was formulated,and the ICPS comprehensive security control framework was constructed.Secondly,a security transmission strategy based on event triggering was designed.Under the DoS attack energy classification detection mechanism,for large-energy attacks,the method based on time series analysis was considered to predict and compensate for lost data.Therefore,on the basis of passive and elastic response to small energy attacks,the active defense capability against DoS attacks was increased.Then by introducing the conecomplement linearization algorithm,the calculation methods of the state and fault estimation observer and the integrated safety controller were deduced,the goal of DoS attack active and passive hybrid intrusion tolerance and actuator failure active fault tolerance were realized.Finally,a simulation example of a four-capacity water tank system was given to verify the validity of the obtained conclusions.展开更多
一、背景政治与社会研究校际联盟(The Interuniversity Consortium for Political and Social Research,ICPSR)①的历史可追溯至1962年,其最初名称为政治研究校际联盟(The Interuniversity Consortium for Political Research,ICPR)...一、背景政治与社会研究校际联盟(The Interuniversity Consortium for Political and Social Research,ICPSR)①的历史可追溯至1962年,其最初名称为政治研究校际联盟(The Interuniversity Consortium for Political Research,ICPR),由美国政治科学家Warren E.Miller等人发起创立,以作为美国全国选举研究的数据散播工具。其意义很快便超越了这一初衷,虽然其发展过程经历过一些波折(如就数据共享方面的问题),但在密歇根大学社会研究所(Institute for Social Research,ISR)及其相关人员的努力下,该联盟组织及其数据共享机制获得了较大的发展和壮大,目前该组织拥有世界上最大的用于政治与社会研究的数据库。展开更多
Spatial distributions of plasma parameters such as electron density, electron temperature and electric potential were investigated using a commercial simulation software （COMSOLTM） to predict the effects of antenna ...Spatial distributions of plasma parameters such as electron density, electron temperature and electric potential were investigated using a commercial simulation software （COMSOLTM） to predict the effects of antenna configuration in a large area inductively cou- pled plasma （ICP） system for flat panel displays. Nine planar antenna sets were evenly placed above a ceramic window. While the electron density was influenced by both the input current and gas pressure, the electron temperature and electric potential were dominantly affected by the gas pressure.展开更多
基金supported by Gansu Higher Education Innovation Fund Project(No.2023B-439)。
文摘Aiming at the industry cyber-physical system(ICPS)where Denial-of-Service(DoS)attacks and actuator failure coexist,the integrated security control problem of ICPS under multi-objective constraints was studied.First,from the perspective of the defender,according to the differential impact of the system under DoS attacks of different energies,the DoS attacks energy grading detection standard was formulated,and the ICPS comprehensive security control framework was constructed.Secondly,a security transmission strategy based on event triggering was designed.Under the DoS attack energy classification detection mechanism,for large-energy attacks,the method based on time series analysis was considered to predict and compensate for lost data.Therefore,on the basis of passive and elastic response to small energy attacks,the active defense capability against DoS attacks was increased.Then by introducing the conecomplement linearization algorithm,the calculation methods of the state and fault estimation observer and the integrated safety controller were deduced,the goal of DoS attack active and passive hybrid intrusion tolerance and actuator failure active fault tolerance were realized.Finally,a simulation example of a four-capacity water tank system was given to verify the validity of the obtained conclusions.
文摘一、背景政治与社会研究校际联盟(The Interuniversity Consortium for Political and Social Research,ICPSR)①的历史可追溯至1962年,其最初名称为政治研究校际联盟(The Interuniversity Consortium for Political Research,ICPR),由美国政治科学家Warren E.Miller等人发起创立,以作为美国全国选举研究的数据散播工具。其意义很快便超越了这一初衷,虽然其发展过程经历过一些波折(如就数据共享方面的问题),但在密歇根大学社会研究所(Institute for Social Research,ISR)及其相关人员的努力下,该联盟组织及其数据共享机制获得了较大的发展和壮大,目前该组织拥有世界上最大的用于政治与社会研究的数据库。
基金supported in part by the International Collaborative R&D Program (N0000678)the Industrial Strategic Technology Development Program (10041681) funded by the Ministry of Trade, Industry and Energy of Korea
文摘Spatial distributions of plasma parameters such as electron density, electron temperature and electric potential were investigated using a commercial simulation software （COMSOLTM） to predict the effects of antenna configuration in a large area inductively cou- pled plasma （ICP） system for flat panel displays. Nine planar antenna sets were evenly placed above a ceramic window. While the electron density was influenced by both the input current and gas pressure, the electron temperature and electric potential were dominantly affected by the gas pressure.
