OMG的数据发布服务(Data Delivery Service)-实时发布-订阅已经成为一个标准,它提供了一个以数据为中心的网络中间件,使得实时环境下以数据为中心的分布式应用更加高效、易于编程。作为一个比较成熟的产品,RTI的NDDS(Network Data Deliv...OMG的数据发布服务(Data Delivery Service)-实时发布-订阅已经成为一个标准,它提供了一个以数据为中心的网络中间件,使得实时环境下以数据为中心的分布式应用更加高效、易于编程。作为一个比较成熟的产品,RTI的NDDS(Network Data Delivery Service)目前已经广泛应用到了美国海、陆、空、天各个领域,并发挥了作用,证明了DDS的可靠性和稳定性。结合NDDS,研究阐述了DDS的通信机制,提出了DDS中间件的设计构想。展开更多
Neutronics measurement system provides neutron fluxes and spectra at the locations of beryllium multiplier and tritium breeder during the operation of the NT-TBM （D-D and D-T phase in ITER）. This is important for st...Neutronics measurement system provides neutron fluxes and spectra at the locations of beryllium multiplier and tritium breeder during the operation of the NT-TBM （D-D and D-T phase in ITER）. This is important for studying and assessing capabilities of beryllium multiplier and tritium breeder in the China helium cooled solid breeder （CNHCSB）. A special neutron diagnostic system has been proposed that allows to measure neutron fluxes and spectra without interrupt the operation of ITER. This system includes encapsulated foil activation analysis, micro-fission chamber detectors （MFC）, and a compact neutron spectrometer using natural diamond detector （NDD）.展开更多
In this study,an innovative dynamics model of LFS(longitudinal vehicle full-speed cruise system)is developed by lumping the dynamics of a controlled vehicle and an inter-vehicles together.On account of the external di...In this study,an innovative dynamics model of LFS(longitudinal vehicle full-speed cruise system)is developed by lumping the dynamics of a controlled vehicle and an inter-vehicles together.On account of the external disturbance,parameters uncertainty and the nonlinearity within LFS,a DDRC(disturbance decoupling robust control)method is proposed.For this method,the theory of NDD(nonlinear disturbance decoupling)is utilized firstly to separate the external disturbance from certain part of the proposed dynamics model.Then,the invariance over the sliding mode of VSC(variable structure control)is used to eliminate the influence of remaining uncertain part.Finally,the DDRC method is adopted to design an LFS ACC(adaptive cruise control)system,and some numerical simulations are carried out to validate its performance.The simulation results demonstrate that the proposed control system not only exhibits an expected dynamic response,high tracking accuracy and a strong robustness,but also achieves a global optimization by means of a simplified control structure.展开更多
如果你是一位从DOS时代走过来的DIYer，那么一定听说过NDD(Norton Disk Doctor)的大名，它除了有与Windows自带的磁盘扫描相似的功能外，还可用于检测和修复磁盘经常出现的文件碎片丢失、交叉链接文件、文件分配表损坏等。可以说是诺顿...如果你是一位从DOS时代走过来的DIYer，那么一定听说过NDD(Norton Disk Doctor)的大名，它除了有与Windows自带的磁盘扫描相似的功能外，还可用于检测和修复磁盘经常出现的文件碎片丢失、交叉链接文件、文件分配表损坏等。可以说是诺顿工具包中一位非常专业的磁盘医生。正因为这个原因，虽然操作系统早已由DOS进入Windows时代，但NDD一直被收入Norton Utillities工具包，在Norton System Works 2004中也可以找到它的踪影，因此我们现在也可以在Windows界面下轻松使用上它。展开更多
文摘Neutronics measurement system provides neutron fluxes and spectra at the locations of beryllium multiplier and tritium breeder during the operation of the NT-TBM （D-D and D-T phase in ITER）. This is important for studying and assessing capabilities of beryllium multiplier and tritium breeder in the China helium cooled solid breeder （CNHCSB）. A special neutron diagnostic system has been proposed that allows to measure neutron fluxes and spectra without interrupt the operation of ITER. This system includes encapsulated foil activation analysis, micro-fission chamber detectors （MFC）, and a compact neutron spectrometer using natural diamond detector （NDD）.
文摘In this study,an innovative dynamics model of LFS(longitudinal vehicle full-speed cruise system)is developed by lumping the dynamics of a controlled vehicle and an inter-vehicles together.On account of the external disturbance,parameters uncertainty and the nonlinearity within LFS,a DDRC(disturbance decoupling robust control)method is proposed.For this method,the theory of NDD(nonlinear disturbance decoupling)is utilized firstly to separate the external disturbance from certain part of the proposed dynamics model.Then,the invariance over the sliding mode of VSC(variable structure control)is used to eliminate the influence of remaining uncertain part.Finally,the DDRC method is adopted to design an LFS ACC(adaptive cruise control)system,and some numerical simulations are carried out to validate its performance.The simulation results demonstrate that the proposed control system not only exhibits an expected dynamic response,high tracking accuracy and a strong robustness,but also achieves a global optimization by means of a simplified control structure.
文摘如果你是一位从DOS时代走过来的DIYer，那么一定听说过NDD(Norton Disk Doctor)的大名，它除了有与Windows自带的磁盘扫描相似的功能外，还可用于检测和修复磁盘经常出现的文件碎片丢失、交叉链接文件、文件分配表损坏等。可以说是诺顿工具包中一位非常专业的磁盘医生。正因为这个原因，虽然操作系统早已由DOS进入Windows时代，但NDD一直被收入Norton Utillities工具包，在Norton System Works 2004中也可以找到它的踪影，因此我们现在也可以在Windows界面下轻松使用上它。
