“九五”期间仪器仪表科学技术重大进展

仪器仪表是人类对物质世界的信息进行测量、控制及有效利用的基本手段和设备,是信息产业的源头和重要组成部分。仪器仪表的发展水平是国家科技水平和综合国力的重要标志之一。 “九五”期间。

面对科学仪器 请别做“有钱的傻子”

离开了科学仪器，人类创新的历程将遭遇怎样的曲折？而有了科学仪器，我们就一定能收获创新的果实吗？

Risk Analysis Comparison between the Mission NANOSATC-BR1 and NANOSATC-BR2

The goal of this work is to perform the risks analysis of the mission NANOSATC-BR1 and NANOSATC-BR2 and then compare them linearly. The NANOSATC-BR1 and NANOSATC-BR2 are the first and the second satellite, respectively. They belonged to the project NANOSATC-BR-development of CubeSats, which is performed in the facilities built by the partnership between the National Institute of Space Research and the Technological Center from Federal University of Santa Maria. The project focuses on the development of a scientific instrumentation and, simultaneously, the design development, construction, qualification and launch of a national scientific nanosatellite, in a cube shape with 100 mm of edge and near to 1.33 kg of mass, per unit （U）. The risk analysis was held to identify and minimize the project＇s risks of failure, due to its complexity, assuring the mission success, preventing extra pays and rework. The software, CubeSat Mission Design Software Tool for Risk Estimating, which uses statistical regression methods, was used. So, we were capable to measure the project＇s most critical steps assuring its success. The NANOSATC-BR1 was launched in June 19 and it is orbiting the Earth in a nominal regime and the NANOSATC-BR2 has been scheduled to be launched in 2016.

基于单激光束旋转的深孔直线度测量方法

基于激光位移传感器旋转,以回转轴线为基准,提出和验证了一种测量深孔零件直线度的方法。实验结果表明,在选用的激光位移传感器精度为±2μm的情况下,该方法实现了圆孔直线度的在机测量,与三坐标测量机给出的相对真值对比,误差低于12%。该测量模型仅需机床主轴及其进给部件,易于实施。