稀土铈添加对Ni-Co-P化学镀层组织及耐蚀性的影响

探讨了稀土元素铈对化学镀Ni—Co—P镀层组织及耐蚀性的影响．结果表明,在化学镀Ni—Co—P基础液中添加适量稀土元素,可以改善镀液稳定性,提高沉积速度,细化镀层晶粒,降低合金镀层在5%NaCl溶液中的腐蚀电流,从而提高镀层的耐蚀性。     

光纤参数对超连续频谱展宽影响的理论与实验研究

从理论上系统地研究了光纤参数对光纤中超连续（SC）谱展宽的影响,实验研究了光纤零色散波长对SC谱宽度的影响。利用非线性薛定谔方程对光纤中的超连续谱产生过程进行了数值模拟。研究结果表明,在超连续谱的展宽过程中,光纤长度、色散斜率、光纤非线性系数和损耗系数等参数对超连续谱有重要影响。为得到性能优良的超连续谱,必须对光纤参数进行优化。实验上采用三级压缩的增益开关DFB激光器作抽运源,色散位移光纤为非线性介质,获得了重复频率10GHz的SC超短光脉冲。研究结果为进一步优化超连续谱的性能奠定了基础。     

液滴分析仪器的小型化研究

在原有的光纤、电容液滴分析仪器的基础上,利用嵌入式系统实现信号的采集、显示与对比分析整个过程,无需计算机的参与。实现了便携式改进的目标。对硬件和软件分别进行了设计,并对系统进行了实验验证,取得了较好的效果。     

自动扫查爬壁机器人系统及调整运动

高压容器的焊缝常存在边界未熔合、未焊透、裂纹等问题,一般利用超声波串列扫查方法对焊缝进行无损检测．介绍一种用于化工容器在役检测的新型超声串列自动扫查爬壁机器人,并着重阐述了其机械结构及位置调整运动控制算法．该爬壁机器人采用磁轮吸附小车的行走方式、利用磁带进行导航和光纤传感器检测机器人状态,具有结构紧凑、导航性能好、位置调整方法可行和定位精度高等特点．实验证明该机器人方案可行,效果良好．     

Defect Detection Algorithm of Patterned Fabrics Based on Convolutional Neural Network

The background pattern of patterned fabrics is complex, which has a great interference in the extraction of defect features. Traditional machine vision algorithms rely on artificially designed features, which are greatly affected by background patterns and are difficult to effectively extract flaw features. Therefore, a convolutional neural network(CNN) with automatic feature extraction is proposed. On the basis of the two-stage detection model Faster R-CNN, Resnet-50 is used as the backbone network, and the problem of flaws with extreme aspect ratio is solved by improving the initialization algorithm of the prior frame aspect ratio, and the improved multi-scale model is designed to improve detection of small defects. The cascade R-CNN is introduced to improve the accuracy of defect detection, and the online hard example mining(OHEM) algorithm is used to strengthen the learning of hard samples to reduce the interference of complex backgrounds on the defect detection of patterned fabrics, and construct the focal loss as a loss function to reduce the impact of sample imbalance. In order to verify the effectiveness of the improved algorithm, a defect detection comparison experiment was set up. The experimental results show that the accuracy of the defect detection algorithm of patterned fabrics in this paper can reach 95.7%, and it can accurately locate the defect location and meet the actual needs of the factory.     

面向Agent交互合作的ODSS系统分析与设计

通过对面向Ａｇｅｎｔ（ＡＯ）思想的特点的研究,提出了大型系统中ＡＯ与ＯＯ（面对对象）相结合的系统分析与设计原则,指出了一条从ＯＯ方法学出发建立ＡＯ方法的可行途径;并以一实际ＯＤＳＳ的开发为背景,介绍了一种以责任和任务驱动下的Ａｇｅｎｔ交互合作为中心的本体论建模分析设计方法,给出了其基本步骤和策略.     

基于OCSP的域间证书验证的研究

介绍了PKI中两种证书撤销方式以及它们的特点,分析了交叉认证中证书验证存在的问题。根据在线证书状态协议（OCSP）的要求以及使用穿越NAT技术,提出了一个不同信任域之间证书撤销信息的验证机制。     

Hilbert空间下CAANA序列的完全矩收敛

用Hilbert空间下CAANA(coordinatewise asymptotically almost negatively associated)序列的性质及矩不等式考虑CAANA序列的一阶矩收敛性问题, 得到了Hilbert空间下不同分布的CAANA序列的完全矩收敛.