原子时自动测量及数据采集系统

介绍了普通的时间实验室的时频测量,实现自动测量和数据收集的基本系统方案,并以上海天文台原子时实验室为例介绍了实际可行的自动测量和数据收集系统,这个系统高性能、低价格,可应用于国内几乎所有的时间实验室。     

基于VB6．0数据库下的示波器自动检定系统实现

以9500示波器自动检定系统为例,介绍了在VB6.0开发环境下,引用其强大的数据库功能。通过建立9500程控代码数据库、仪器登记数据库、检定参数设置信息库、检定结果信息库,实现了各库之间的数据访问和存储,达到了对各种示波器的半自动和全自动检定。并将部分代码加以介绍,可以直接在其它自动测试中应用,因此具有广泛的应用和借鉴价值。     

复合材料锥壳0°铺层的自动铺放成型方法研究

研究了一种基于自动铺带技术的复合材料锥壳0°铺层成型方法：根据锥壳构件尺寸将等宽预浸带数控分切成预定尺寸的直角梯形预浸带片，按特定方式铺放到锥壳表面并使每两片拼成一个等腰梯形单元，多个等腰梯单元形构成锥壳的0°铺层；并针对这种成型方法设计了一种实现锥壳0°铺层自动成型的装置。采用该方法及其设备可以实现锥壳0°铺层的自动化制造，提高成型效率、降低废料率、稳定工艺质量，降低装备制造成本。     

复杂电磁环境下无线接收机电磁兼容快速测试技术应用CSCD

复杂射频电磁环境下,无线接收机作为主要的敏感设备,其电磁兼容性直接影响着整个武器装备的电磁兼容特性. 本文针对GJB 151B中对于接收机非线性测试方法的局限性,引入了一种利用自动双频测试系统对接收机干扰响应的快速测试方法;并搭建了实验室半实物仿真测试平台,检测了某接收机在（ 4-6 ） GHz组合频率干扰下的所有非线性的干扰响应通道. 测试结果对于评估接收机及其所在系统的外部电磁环境适应性具有重要参考价值.     

自动转移飞行器的轨控总体方案

介绍了欧空局的自动转移飞行器（ATV）的轨道控制方案和技术。给出了ATV的飞行方案、测量敏感器和执行机构的配置，以及在空间站调相段、寻的段、接近段和最终逼近段的轨控策略。     

Automated design architectures for co-orbiting spacecraft swarms for planetary moon mapping

This work describes the design and optimization of spacecraft swarm missions to meet spatial and temporal visual mapping requirements of missions to planetary moons, using resonant co-orbits. The algorithms described here are a part of Integrated Design Engineering and Automation of Swarms (IDEAS), a spacecraft swarm mission design software that automates the design trajectories, swarm, and spacecraft behaviors in the mission. In the current work, we focus on the swarm design and optimization features of IDEAS, while showing the interaction between the different design modules. In the design segment, we consider the coverage requirements of two general planetary moon mapping missions: global surface mapping and region of interest observation. The configuration of the swarm co-orbits for the two missions is described, where the participating spacecraft have resonant encounters with the moon on their orbital apoapsis. We relate the swarm design to trajectory design through the orbit insertion maneuver performed on the interplanetary trajectory using aero-braking. We then present algorithms to model visual coverage, and collision avoidance in the swarm. To demonstrate the interaction between different design modules, we relate the trajectory and swarm to spacecraft design through fuel mass, and mission cost estimations using preliminary models. In the optimization segment, we formulate the trajectory and swarm design optimizations for the two missions as Mixed Integer Nonlinear Programming (MINLP) problems. In the current work, we use Genetic Algorithm as the primary optimization solver. However, we also use the Particle Swarm Optimizer to compare the optimizer performance. Finally, the algorithms described here are demonstrated through numerical case studies, where the two visual mapping missions are designed to explore the Martian moon Deimos.     

Z-pin自动植入数控系统研制及性能研究

为实现Z-pin的数控自动植入,以可编程多轴控制器PMAC作为运动控制的核心、附卡控制辅助开关量,设计了基于开放式数控系统的X-cor芯材成型专用CNC硬件体系。试制了多种规格的X-cor夹层结构试样,分别研究了Pin直径、Pin植入角以及Pin分布密度等参数对X-cor夹层结构压缩性能、剪切性能的影响。结果表明,Pin可以大幅度提高X-cor夹层结构的压缩性能,同时提高了断裂韧性。     

Framing holes within a loop hierarchy

We investigate the relation between nontrivial spatial concepts such as holes and string loops from a qualitative spatial reasoning perspective. In particular, we concentrate on a family of puzzles dealing with this kind of objects and explain how a loop formed in a string shows a similar behavior to a hole in an object, at least regarding the qualitative constraints it imposes on the solution of the puzzle. Unlike regular holes, however, we describe how string loops can be dynamically created and destroyed depending on the actions on the string. Furthermore, under a Knowledge Representation point of view, we provide a formalization that allows the different puzzle states to be described in terms of string crossings and loops, together with the actions that can be executed for a state transition and the complex effects they cause on the state representation. This implies the consideration of a formal representation of the side effects of actions that create or destroy string loops and the soundness of this representation with respect to the more general representation of string states in knot theory.     

复合材料自动铺带技术研究(I)——“自然路径”特性分析及算法

分析了可展面上“自然路径”的几何本质,推演证明其在可展曲面上与测地线的等价性。应用和拓展可展面“自然路径”数值算法,在一般曲面上引入边界控制点调整预浸带中心点以减小预浸带变形、实现铺放,构造了一般曲面“自然路径”求解格式。     

复合材料自动铺带技术研究(Ⅱ)——柱面上沿"自然路径"铺带的压辊坐标生成

根据可展曲面上“自然路径”与测地线等价原理，应用沿弧长展开方法，研究了柱面上“自然路径”轨迹生成、铺带头轨迹坐标和姿态坐标计算模型与方法，讨论了简单边界的处理原则与方法，为实现柱面自动铺带CAD／CAM提供了依据。