基于机器视觉的多功能在线检测实验平台研制

本文提出了一种基于机器视觉的多功能在线检测实验平台的研制方案,介绍了基于Matrox公司Cor-noa2图像采集卡和PULNIX公司TM6703摄像机的视觉检测平台的软硬件结构和工作原理,详细阐述了图像采集卡和摄像机的配合应用和软件开发。     

显微投影仪数字图像处理技术的应用研究

在原有显微投影仪 ( CYG— 0 5 5 C型 )的基础上 ,使用 CCD作为接收器 ,利用 VC+ +开发平台设计 ,采用先进的计算数字图像处理技术 ,充分利用了计算机的软、硬件资源 ,实现投影仪的智能化纤维检测工作。     

机器视觉综合检测实验平台的研制

提出一种基于机器视觉的综合检测实验平台的研制方案,介绍基于CORECO公司的PC2-VISION图像采集卡和台湾NINTRON公司的1881EX摄像机的视觉检验平台软硬件结构和工作原理,详细阐述图像采集卡和摄像机的配合应用和软件开发。     

汽车起重机关键器件智能化检测

本文从智能化的角度出发,研制了1套智能化检测系统,对汽车起重机关键器件的性能实现及时、准确、成批量检测,提供了一体化检测平台,增强了检测系统的自动化,实现了操作的简便性和友好性,保证了检测系统的高效性和检测结果的可靠性。     

过程分析仪器智能化测控平台的研究及应用

分析了过程分析仪器的特点及其智能化的必要性。介绍了智能化测控平台的功能与组成，该研究为过程分析仪器在样品预处理的分析检测方面的数字化、智能化开发提供了技术支持。该平台已在厂家投产的系列分析仪器中应用，取得了较好的效果。     

基于VC++的光谱成像中药检测系统的控制软件设计

为了实验的方便快捷、提高实验的效率、降低出错概率,设计了光谱成像中药检测系统的操作控制界面。光谱成像中药检测系统的两个主要组成器件为多光谱液晶滤光器和CCD摄像机。现采用VC++开发平台设计了多光谱液晶滤光器、CCD摄像机的控制界面,并实现二者的联动控制。该操作控制界面使用方便、友好,实现了整个系统的自动控制。     

全自动模板机智能控制系统的设计与实现

该文提出了一种全自动模板机智能化控制系统实现方法,它是基于双ARM+FPGA双CPU方式的开放式平台。分析了全自动模板机的工作原理,详细阐述了该平台的总体设计方案,讨论了软硬件的实现方式。     

基于计算机视觉的苹果在线高效检测与分级系统

基于由计算机、摄像机、传感器为主体构建的硬平台和MATLAB为主的软平台,与企业合作研发出苹果在线自动检测、分级系统.推导出摄像机合理位姿参数计算式,建立了苹果从动态向稳态过渡的数学模型.提出一种检测果形和尺寸方法,使在线动态检测能够实现.依据苹果色泽特征比率规律,结合模糊聚类知识实现对缺陷域快速、准确的识别.提出一种缺陷面积的新算法,解决了表面曲率对合理换算面积的影响问题.试验表明所研发的系统能实现高效、准确的检测分级.     

基于HALCON的字符识别及缺陷检测

人类日常生活或生产中,利用字符来识别物体已成为主要的途径,因此字符印刷的正确性影响人类的认知及产品的质量.论文的实验针对这一问题,设计一个包括霍尔传感器元件及大恒摄像机的旋转的实验平台,霍尔开关传感器在固定的位置触发摄像机拍照,经过图像采集卡将图像传到计算机,然后利用HALCON软件和基于组件的模板匹配技术在旋转实验台上模拟对在线产品进行字符检测,剔徐废品,提高成品的合格率.结果表明该试验方法可以准确地进行字符识别及缺陷检测.     

机器视觉技术在电梯智能检测中的应用

将机器视觉技术应用于电梯中具有很强的优越性,可以实现电梯运行工况感知,便于系统作出智能化判断。以电梯超载检测为例,针对传统超载检测方法可靠性和智能化程度低的问题,将机器视觉技术应用于超载检测中,采用基于空间占有率检测的超载判定方法,通过在电梯环境中的实时测试和Simulink平台编程,结果证明了该方法的可行性,增加了电梯的输送效率,提高了电梯的智能化程度。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

On the Relation of Load to Average Gap in the Contact Between Surfaces with Longitudinal Roughness

A computer simulation model for the contact between longitudinally-oriented rough surfaces has been formulated. This model closely duplicates the actual surf ace contact deformation behavior by taking into account the elastic interactions between the asperities. There were no assumptions made about the shapes, or any deformation behavior of the asperities, except for their obeying the laws of elasticity. The plastic deformations on the high asperity peaks were taken into account by setting a ceiling on their contact pressures at the material hardness value. The simulations used real surface profiles which were digitized from unworn circumferentially ground steel surfaces. Each pair of these profiles was mathematically combined to form an equivalent rough profile pressing against an infinitely rigid flat and having the appropriately adjusted elastic modulus. A total of 28 different pairs of profiles were used in the simulations. Each contacting pair was subjected to 30 different load levels and the local contact pressures and deformations were calculated. The contact simulations yielded some important mathematical relationships between parameters, such as the real area of contact, average gap, and average asperity load through statistical curve fitting. Two analytical functions were generated to relate the average load to average gap and the real area of contact to load.     

三绕组变压器的双绕组等效建模及在Matpower中的应用

针对实际电网存在着大量的三绕组变压器,但国际上一些著名商业软件,如BPA仿真软件、Matpower这一权威潮流计算开源软件,均只提供双绕组变压器模型,限制了其在具有三绕组变压器的电力系统中的应用的问题,潮流计算是自主开发的电力系统各种应用软件的核心模块,因此依托国际权威开源程序进行二次开发,是一种较好的选择。对Matpower要求的数据格式进行了归纳,对变压器的一般的等值电路及带理想变压器的等值电路和带标幺值的等值电路进行了分析研究,提出了三绕组变压器转换为双绕组等效模型的建模方法,使得原先只适应双绕组变压器的潮流计算软件可以适用于三绕组变压器电网的潮流计算;最后以Matpower软件为例进行了案例计算,并用PSASP仿真软件进行对比验证。研究结果证明,所提出的建模方法是有效的。     

Quantum Cooperative Robotics and Autonomy

The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...     

电站锅炉模糊风险评价方法研究与应用

针对电站锅炉风险等级评价问题,将模糊综合评价技术应用到电站锅炉风险等级评价中。开展了电站锅炉失效影响因素及模糊评价因素的重要程度分析,建立了一套科学合理适于在线评价的电站锅炉风险评价体系,提出了模糊综合评价技术与改进的模糊层次分析法相结合的模糊风险评价方法,利用改进的模糊层次分析法计算了指标体系中各层指标权重。对某一台电站锅炉的实际运行工况影响子因素进行了模糊风险评价,采用模糊合成算子进行模糊综合运算得到电了站锅炉运行工况影响子因素的评价向量。研究结果表明:电站锅炉的运行工况影响子因素的风险评价等级为第6级,失效可能性等级为小,该电站锅炉运行工况良好。     

考虑进油孔有限长滑动轴承油膜力的近似解析解

针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。     

Fifth International Summer School on Screw-Theory Based Methods in Robotics

正3-11 September,2014University of Bologna,Bologna,Italy www.summerscrews.org summerscrews2014.ing.unibo.it SUMMER 20SCREWS 14In 2014,our screw-theory school comes to the world's oldest university.In early September,Summer Screws'14 will gather six experts in the application of screw theory in robotics and up to 40 participants at the University of Bologna,Bologna,Italy.The school will teach attendees how to apply existing methods and empower them to develop new ones in their own research.The basic theoretical notions will be introduced in a rigorous manner,emphasizing examples,applications,and exercises.Scholarships are available.     

交通荷载作用下桥梁结构参数识别方法

应用动力节点加载法,将作用在桥梁上的交通荷载转化为等效节点荷载,再用两步构造法识别结构物理参数.第1步,用Newmark-β方法变换结构运动方程,并用结构的加速度响应求得变换空间内的位移、速度和加速度响应;第2步,基于最小二乘原理,构造出变换空间内求解结构参数的递推式,进行结构物理参数识别.数值模拟结果表明,在交通荷载作用下,该方法能够快速、准确地进行桥梁结构参数识别.     

INDUSTRIAL ENGINEERING AND VISUALISATION-A PRODUCT DEVELOPMENT PERSPECTIVE

Taking the actual project of teaching and researching process for example, the relationship between the industrial engineering and product development is discussed. And use the novel visualization technology to support the industrial engineering and product development. How to use the new computer modeling and simulating technologies to support the product development and industrial engineering, is introduced especially. The support includes both domestic products and industrial systems. The visualization and computer technologies take a very important role in some system or multi-direction modeling, those technologies mentioned above can help the industrial engineers study the effect of design on the whole life circle, including the producing steps. So the engineers can avoid making the wrong decision which may cause bad effects on the whole industrial engineering.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.