传统方法在进行变电站维护时,存在变电站运维工作量大,人工操作依赖较强等问题。为此,本文设计变电站运行自动化维护巡检机器人。依据VFH(Vector Field Histogram)算法完成机器人避障控制,以无线网络作为通信通道,利用自动化维护模块完...传统方法在进行变电站维护时,存在变电站运维工作量大,人工操作依赖较强等问题。为此,本文设计变电站运行自动化维护巡检机器人。依据VFH(Vector Field Histogram)算法完成机器人避障控制,以无线网络作为通信通道,利用自动化维护模块完成变电站运行自动化。结果表明,本文方法具有较高的准确性,处理效率高,能有效提升变电站使用寿命。展开更多
We investigate the two-pion interferometry in ultrarelativistic heavy ion collisions in the granular source model of quark-gluon plasma droplets.The pion transverse momentum spectra and HBT radii of the granular sourc...We investigate the two-pion interferometry in ultrarelativistic heavy ion collisions in the granular source model of quark-gluon plasma droplets.The pion transverse momentum spectra and HBT radii of the granular sources agree well with the experimental data of the most central Au-Au collisions at(sNN)1/2=200 GeV at the RHIC and Pb−Pb collisions at(sNN)1/2=2.76 TeV at the LHC.In the granular source model the larger initial system breakup time for the LHC collisions as compared to the RHIC collisions may lead to the larger HBT radii Rout,Rside and Rlong.However,the large droplet transverse expansion and limited average relative emitting time of particles in the granular source lead to slightly smaller ratios of the transverse Hanbury–Brown–Twiss radii Rout/Rside.展开更多
文摘传统方法在进行变电站维护时,存在变电站运维工作量大,人工操作依赖较强等问题。为此,本文设计变电站运行自动化维护巡检机器人。依据VFH(Vector Field Histogram)算法完成机器人避障控制,以无线网络作为通信通道,利用自动化维护模块完成变电站运行自动化。结果表明,本文方法具有较高的准确性,处理效率高,能有效提升变电站使用寿命。
基金Supported by the National Natural Science Foundation of China under Grant No 11075027.
文摘We investigate the two-pion interferometry in ultrarelativistic heavy ion collisions in the granular source model of quark-gluon plasma droplets.The pion transverse momentum spectra and HBT radii of the granular sources agree well with the experimental data of the most central Au-Au collisions at(sNN)1/2=200 GeV at the RHIC and Pb−Pb collisions at(sNN)1/2=2.76 TeV at the LHC.In the granular source model the larger initial system breakup time for the LHC collisions as compared to the RHIC collisions may lead to the larger HBT radii Rout,Rside and Rlong.However,the large droplet transverse expansion and limited average relative emitting time of particles in the granular source lead to slightly smaller ratios of the transverse Hanbury–Brown–Twiss radii Rout/Rside.