Use of Fuzzy Neural Network in Industrial Sorting of Apples

In this paper,an automated system and methodology for nondestructive sorting of apples are presented.Different from the traditional manual grading method,the au...     

专用计算机数控机床动态可靠性研究

基于专用数控机床和数控系统可靠性的研究,文章提出了动态可靠性研究方法.在一般工序能力指数等级划分的基础上,重新界定了专用数控机床工序能力指数等级,分析了专用数控机床可靠性分等级特性,讨论了动态可靠性分析评估方法,并进行了应用示范的研究.     

农产品自动分选控制系统的研制

本文阐述了类似圆形农产品分选机构的工作原理，并运用可编程控制器研制了一套适应于鸡蛋、苹果等类似于圆形农产品的自动分选系统，同时介绍了此系统的组成。     

Establishing a Demerit Count Reference Standard for the Classification and Grading of Leather Hides

Leather hide, as a natural material, may have many types of undesirable surface defects. No analytical method has been devised for classifying and grading wet blue hide surface defects. A high return rate and disputes between the customer and manufacturing company usually cause additional costs. This paper proposes a semi-automatic machine vision method to measure the unusable surface defect areas in wet blue hides and a clear reference standard for the demerit count for graders to classify and grade wet blue hides. A statistical comparative evaluation of the grade deviation rate and a practical demerit count method for tannery performance are given to show the usefulness of the proposed approach. a clear evaluation standard for leather surface quality usually causes much argument between the tanneries and the leather.       

基于机器视觉的机械零件测量技术

应用IMAQ Vision软件构建的机械零件测量系统将机器视觉技术和虚拟仪器技术结合在一起，对各种机械零件进行快速准确的在线测量。这里以齿轮为例介绍了测量的技术路线。测量系统综合应用LabVIEW和它的企业链接、信号处理等工具包，将被测对象的图像和数据直接融合到企业的信息流之中。     

Thermal performance of functionally graded parabolic annular fins having constant weight

The proposed work reports the performance of parabolic annular fins of constant weight made of functionally graded materials. The work involves computation of temperature gradient, efficiency and effectiveness of such fins and compares the performances for different functionally graded parabolic fin profiles obtained by varying grading parameters and profile parameters respectively keeping the weight of the fins constant. The functional grading of thermal conductivity is based on a power function of radial co-ordinate which consists of parameters, namely grading parameters, varying which different grading combinations are studied. A general second order ordinary differential equation has been derived for all the profiles and material grading. The efficiency and effectiveness of the annular fins of different profile and grading combinations have been calculated and plotted and the results reveal the dependence of fin performance on profile and grading parameter.     

数控机床垂向滚珠丝杠制动装置

数控机床垂向滚珠丝杠制动装置采用带失电制动器的伺服电动机,再在数控机床的铅垂轴上,增加一个外置失电制动器。外置失电制动器装在滚珠丝杠的上部,带失电制动器的伺服电动机,通过传动结构与滚珠丝杠相连接。该装置可以取代数控机床铅垂轴的平衡锤和平衡油缸,避免了平衡锤和平衡油缸的缺点,结构简单。     

光栅投影技术在织物平整度等级评定中的应用

织物的平整度等级是一个评价织物外观性能的重要指标。本文给出一种基于双目CCD光栅投影技术的织物平整度等级客观评价系统的研制方法,它利用双目CCD光栅测量中两幅图像相互补偿的方法较好地解决了反光和阴影的问题,减小了噪音的影响,获取了大量高精度的三维数据点。在此基础上,合理构建了反映织物平整程度的特征指标,客观评价了织物的平整度等级。     

高碳铬轴承钢退火缺陷组织及评级

在充分理解和领会标准评定原则的基础上,结合实际工作经验,对因原材料、热处理工艺及生产设备等因素造成的退火缺陷组织的检验及评级问题进行了深入的探讨,并对长期以来极容易引起争议的退火缺陷组织的识别及级别评定提出了建议。     

机器造型设计的美学法则

造型设计是影响机电产品市场竞争力的重要因素，文章叙述机器造型设计的组成要素，提出造型艺术设计的美学法则，强调色彩设计对造型的作用。最后给出机器2造型设计的评定条件。     

数控机床误差补偿研究的回顾及展望

近年来，提高数控机床精度的研究得到了极大的重视。在简述误差防止方法之后，着重对基于实时误差补偿提高数控机床精度的研究进行回顾。指出目前实时误差补偿研究中所存在的主要障碍，并介绍几个正在进行的以克服这些障碍为目的的研究项目。     

Coking and microcoking: Tools for evaluating and developing lubricant additives

Two tests for evaluating an engine lubricant's tendency to form deposits at high temperature have been developed by a working group of the GFC,

1 Groupement Français de Coordination (French Coordination Group).

set up to establish laboratory pre-selection tests. The first is a new static microcoking test where the oil is deposited on an aluminium alloy plate and submitted to thermal conditions similar to those found in the piston ring zone of an IC engine. The results are analysed to determine the temperature at the oil's thermal stability limit and to evaluate the quantity and nature of the deposits in the form of varnish, according to a grading system based on the CEC M-02-A-78 method of gauging engine cleanliness. The second is an improved panel coking test in which a thin film of oil of a given volume is fed on to a stainless steel panel, at high temperature, and the deposits formed at the end of the test are evaluated, again using the CEC rating method, in terms of quantity and type (carbon or varnish). In addition, a video system has been designed to grade the micro-coking panels through colour recognition. This not only allows visual grading to be faithfully reproduced but also eliminates the subjective element of colour grading. The results obtained with the ‘Video-Rater’ constitute a first step towards computer-assisted grading of engine parts.     

双频激光干涉仪在机床检定中的应用

介绍了双频激光干涉仪胡机床检定中检定数控机床位置精度，检定直线度，垂直度和平面度的方法，还介绍了影响测量精度的因素。     

抓取箱形物品的机械手的优化设计

应用复合型优化设计方法,对抓取箱形物体机械手的平行四边形连杆机构进行了优化设计。优化设计的结论应用于机械手的总体设计。     

Three-dimensional analysis of thermal stresses in four-parameter continuous grading fiber reinforced cylindrical panels

In this paper, three-dimensional analysis of thermal stresses in four-parameter continuous grading fiber reinforced cylindrical panel subjected to thermal load is studied. The cylindrical panel is assumed to be made of an orthotropic material. The continuous grading fiber reinforced panel has a smooth variation in matrix volume fraction in the radial direction. A generalization of the power-law distribution presented in literature is proposed. Symmetric and asymmetric volume fraction profiles are presented in this paper. Suitable temperature and displacement functions that identically satisfy the boundary conditions at the simply supported edges are used to reduce the thermoelastic equilibrium equations to a set of coupled ordinary differential equations with variable coefficients, which can be solved by generalized differential quadrature method. The fast rate of convergence of the method is demonstrated and to validate the results, comparisons are made with the available solutions for orthotropic shells. The main contribution of this work is to illustrate the influence of the power-law exponent, of the power-law distribution choice and of the choice of the four parameters on the thermal behaviour of continuous grading fiber reinforced cylindrical panels.     

微机控制电刷镀机床的研制

讨论了微机控制电刷镀机床的工作原理及其控制原理，介绍了一种新型微机控制电刷镀机床，该机床能在工件表面自动镀上一层厚度均匀的耐磨耐蚀层。     

Application of confocal scanning laser microscopy for an automated nuclear grading of prostate lesions in three dimensions

Confocal scanning laser microscopy provides the opportunity to obtain three-dimensional (3-D) images by piling up consecutive confocal planes. This technique was applied to capture 3-D images from 100-μm-thick tissue blocks from prostate lesions (hyperplasia, dysplasia, adenocarcinomas). Automated methods were implemented to perform a nuclear grading of 3-D cell nuclei from these specimens. Special attention was focused on the development of a new approach to 3-D chromatin texture analysis. This method uses mathematical morphology operations to tessellate the chromatin into homogeneous domains. The nuclear features (volume, shape, texture) were subjected to a discriminant analysis. Using a set of five features, the classification of cell nuclei yielded an accuracy of 963%. The results indicate the potential of 3-D imaging and analysis techniques for an automated nuclear grading of prostate lesions.     

一种加工长锥度的新方法

介绍了一种加工长锥度的方法,成功突破了锥面加工长度受小拖板长度限制的要求。     

基于人工神经网络控制的自适应电机轴出轴端校直机的研究

针对某汽车电机生产企业的电机轴出轴端校直需求,综合运用控制理论、人工神经网络、机电一体化原理,构建一套具有多品种自适应、高精度、高效率、高可靠性、低成本特点的电机轴出轴端校直装置,能显著改善产品质量和提高效率。     

禽蛋检测与分级智能机器人系统的设计

为了实现禽蛋检测与分级的自动化,建立一种轻型自动化系统,即禽蛋检测与分级智能机器人系统(System of intelligentrobot detecting and grading eggs,SmDGE).SIRDGE将禽蛋的破损检测、内部品质检测以及检测和分级时的搬运工作联系起来,统一由一个关节型机器人来完成,能实现禽蛋检测和分级的全程自动化.介绍该系统的组成结构和工作原理,对系统关键的硬件设备和软件实现过程作了必要的说明,包括场景图像的采集和摄像机的标定,图像处理和特征值的提取,机器人运动控制和轨迹规划,真空吸盘的单片机控制,敲击声音的处理与破损检测,彩色图像处理与内部品质检测等内容,并对SIRDGE系统进行性能测试,测试结果证明,SIRDGE能够实现禽蛋检测和分级的全程自动化.