遥感图像分类技术研究

目的　探讨遥感图像分类技术 ,研究不同工作要求的分类方法 .方法　比较了目前流行的几种像分类算法 ,讨论了这些算法的特点 .结果　对实际遥感图像分析研究提供了工作方法 .结论　对快速遥感数据分析场合 ,基于一阶灰度统计的方法的结果是可以接受的 ;非实时和较高分类精度要求的场合 ,应考虑采用神经网络、马尔可夫场等方法     

机器人多指操作的抓取力分析和实时优化

在非线性摩擦锥约束转换为对称矩阵正定线性约束的基础上,首先将抓取力摩擦锥约束进一步转换为线性矩阵不等式约束,使抓取力封闭判别问题转化为带线性矩阵不等式约束的可行解问题,完成抓取的力封闭条件判别,然后根据摩擦锥的正定线性约束矩阵和抓取力平衡约束矩阵的分块特性和稀疏特性,实现多指滚动操作实时抓取力优化计算.最后在多指手实验平台上实现并验证了算法.     

基于能量迭代运算提取汽车轮廓

图像轮廓提取是图像处理中一项较复杂技术之一。由于受到硬件水平和软件技术的限制,目前主要还是依靠手工与自动相结合的方法来解决一些实际问题,低效果并不理想,尤其是对某些特殊情况,如“尖锐角”现象等。通过对Maar变换后图像特征的深入分析,设置新的判断准则,提出了种针对复杂物体边缘检测的算法流私,可以对具有“尖锐角”的物体轮廓进行快速准确地提取,同时利用矢量化方法消除毛刺,使跟踪获得的边界更符合物体的实际轮廓特征。     

HIT/DLR多指手抓取操作研究

研究了HIT／DLR多指手在抓取操作过程中,其手指关节与被抓物体间的位姿对应关系,并基于多指平面抓取建立了HIT／DLR多指手完整的运动学方程．该算法通过自上而下的层次化结构算法简化了多指运动学的求解过程,避免了传统算法中抓取矩阵和手雅克比矩阵的高维矩阵计算．HIT／DLR多指手的抓取实验表明,该运动学算法能够满足抓取操作中的位置控制要求．     

用关联维构建和操作在群体决策中的应用

为了解决传统数据仓库无法支持群体决策的问题,提出了一个支持群体决策的数据仓库中建立关联维的算法以及对于关联维的实际操作.通过在电力营销数据仓库系统中的实际应用,证明了算法的正确性和操作的可行性.表明,该方法可以得到更加高效的查询,提高与群体决策相关的辅助企业决策水平.     

自动纱线综合测试仪的研制

阐述了自动纱线综合测试仪的研究和制造,介绍了该仪器组成及设计,并应用该仪器试验结果与美国EIB－S试验结果对比表明：该仪器技术先进,测试精度高,仪器性能可靠,操作方便,其相关技术指标与EIB－S等同,具有较高的性能价格比。     

模块化机器人双臂协调操作的实验研究

提出了利用optotrak3020三维测量系统获得精确位置信息来进行双臂机器人协调操作的方法。通过对双臂协调操作的运动约束进行分析,确定双臂协调运动的约束条件,同时将三维测量系统获得的空间三维坐标信息反馈到控制计算机,调整机器人末端的位置和姿态,以装配螺栓为例从运动学角度完成协调操作的实验。实验证明,利用optotrak3020三维测量系统获得精确位置信息对双臂机器人进行协调操作是有效的。     

Rapid,Controllable Fabrication of Regular Complex Microarchitectures by Capillary Assembly of Micropillars and Their Application in Selectively Trapping/Releasing Microparticles

A simple strategy to realize new controllable 3D microstructures and a novel method to reversibly trapping and releasing microparticles are reported. This technique controls the height, shape, width, and arrangement of pillar arrays and realizes a series of special microstructures from 2‐pillar‐cell to 12 cell arrays, S‐shape, chain‐shape and triangle 3‐cell arrays by a combined top down/bottom up method: laser interference lithography and capillary force‐induced assembly. Due to the inherent features of this method, the whole time is less than 3 min and the fabricated area determined by the size of the laser beam can reach as much as 1 cm², which shows this method is very simple, rapid, and high‐throughput. It is further demonstrated that the ‘mechanical hand’‐like 4‐cell arrays could be used to selectively trap/release microparticles with different sizes, e.g., 1.5, 2, or 3.5 μm, which are controlled by the period of the microstructures from 2.5 to 4 μm, and 6 μm. Finally, the ‘mechanical hand’‐like 4‐cell arrays are integrated into 100 μm‐width microfluidic channels prepared by ultraviolet photolithography, which shows that this technique is compatible with conventional microfabrication methods for on‐chip applications.     

小型制冷装置毛细管可视化实验研究

设计并搭建了一套小型制冷装置毛细管可视化实验台以及计算机图像采集系统,改变实验工况,得到了透明毛细管管长方向上不同距离处的管内流动状态图,通过开发的图像处理程序对其进行处理,获得流动状态处理图,并以此分析了小型制冷装置毛细管内的两相流特性.     

Printable Skin‐Driven Mechanoluminescence Devices via Nanodoped Matrix Modification

Mechanically driven light generation is an exciting and under‐exploited phenomenon with a variety of possible practical applications. However, the current driving mode of mechanoluminescence (ML) devices needs strong stimuli. Here, a flexible sensitive ML device via nanodopant elasticity modulus modification is introduced. Rigid ZnS:M²⁺(Mn/Cu)@Al₂O₃ microparticles are dispersed into soft poly(dimethylsiloxane) (PDMS) film and printed out to form flexible devices. For various flexible and sensitive scenes, SiO₂ nanoparticles are adopted to adjust the elasticity modulus of the PDMS matrix. The doped nanoparticles can concentrate stress to ZnS:M²⁺(Mn/Cu)@Al₂O₃ microparticles and achieve intense ML under weak stimuli of the moving skin. The printed nano‐/microparticle‐doped matrix film can achieve skin‐driven ML, which can be adopted to present fetching augmented animations expressions. The printable ML film, amenable to large areas, low‐cost manufacturing, and mechanical softness will be versatile on stress visualization, luminescent sensors, and open definitely new functional skin with novel augmented animations expressions, the photonic skin.