一种水文缆道主索保护装置

一种水文缆道主索保护装置程进豪，安连华，张广海（黄河水利委员会山东水文水资源局）１问题的提出水文缆道是一种重要的测量过河设备。目前，我国已有各种水文缆道（包括吊船过河缆道、自动化缆道、水文缆车等）近３０００座，在水文测验中起了重大作用，它不仅减轻了劳...

新型盘扣式脚手架跨越系统在输电线路中的应用

跨越放线施工工艺不断改进和创新,使用杉杆或抱杆改装跨越架立柱为常用的跨越架架体,封顶网多采用主索道封网的方法。该方案具有方便高效、安全系数高、易于施工、成本低的特点。文章主要对采用承插型盘扣式钢管架、主索道封网跨越系统在电气化铁路中的应用进行了研究。

Autonomous determination of orbit for probe around asteroids using unscented Kalman filter

The observed images of the asteroid and the asteroid reference images are used to obtain the probe-to-asteroid direction and the location of the limb features of the asteroid in the inertial coordinate. These informa-tion in combination with the shape model of the asteroid and attitude information of the probe are utilized to ob-tain the position of the probe. The position information is then input to the UKF which determines the real-timeorbit of the probe. Finally, the autonomous orbit determination algorithm is validated using digital simulation.The determination of orbit using UKF is compared with that using extended Kalman filter (EKF), and the resultshows that UKF is superior to EKF.