基于最优形态学滤波的面料缝纫加工检测

为了对服装加工质量进行自动检测,提出了一种对针织面料缝纫加工的疵点进行自动检验的方法。该方法首先基于遗传算法进行结构元素的寻优,然后通过图像的数学形态学滤波处理来消除面料组织的正常纹理对图像分割的干扰;最后利用灰度阈值实现图像分割来得到表现缝线和加工疵点特征的二值图像。实验结果表明,该方法是有效的。     

提升芯片智能化生产的器件失效分析

智能化自动化生产是现代化芯片生产的主要发展趋势之一,通过失效分析手段进行芯片良率提升并将失效数据模型补充至智能化生产的监测管理是自动化芯片代工的重要手段。本文以60 V沟槽功率器件为研究对象,通过完成芯片制造全流程后电性测试得到的良率数据,从失效检测的电性、剖面形貌出发,利用结构形貌结果反推工艺失效节点,并建立失效数据库。结果表明,采用热点分析及高倍电镜观察可快速排查芯片的器件失效的结构,并根据工艺流程迅速判断失效工艺步骤。     

冷轧带肋钢筋预应力叠合板施工工艺

在现场试验的基础上,将冷轧带肋钢筋叠合板楼盖应用于几个实际工程,认为该种叠合板楼盖不仅在结构,抗震性能上有其优点。     

The role of topology in engineering design research

Aspects of the mathematical specialty of topology appear within several seemingly distinct areas of engineering design and engineering design theory. Indeed, the expression topology of a design is often used informally. In this article a primary intent is to demonstrate the diversity of applications of topology within engineering design. A complementary goal is to introduce the engineering design community to topology as a rich, formal, well-established mathematical discipline that may be of value for wider study. Upon reviewing some of these topological applications, it appears that topology holds promise as a basis for formalizing engineering design theory. This article considers topology as a basis for unifying design abstractions. The potential benefit may be the realization of commonalities between design aspects previously considered separately, where each now has its own attendant specialized, expensive analyses.     

产品制造过程信息控制管理系统的设计与开发

以作者所在单位产品制造过程信息控制管理系统为例,详细描述了系统的方案与设计,阐述了基于C/S结构的产品条码管理系统的设计及其实现的关键技术,介绍了该系统的各个功能模块及数据库的实现方法。     

The role of inorganic polymer technology in the development of ‘green concrete’

The potential position of and drivers for inorganic polymers (“geopolymers”) as an element of the push for a sustainable concrete industry are discussed. These materials are alkali-activated aluminosilicates, with a much smaller CO₂ footprint than traditional Portland cements, and display very good strength and chemical resistance properties as well as a variety of other potentially valuable characteristics. It is widely known that the widespread uptake of geopolymer technology is hindered by a number of factors, in particular issues to do with a lack of long-term (20+ years) durability data in this relatively young research field. There are also difficulties in compliance with some regulatory standards in Europe and North America, specifically those defining minimum clinker content levels or chemical compositions in cements. Work on resolving these issues is ongoing, with accelerated durability testing showing highly promising results with regard to salt scaling and freeze–thaw cycling. Geopolymer concrete compliance with performance-based standards is comparable to that of most other high-strength concretes. Issues to do with the distinction between geopolymers synthesised for cement replacement applications and those tailored for niche ceramic applications are also discussed. Particular attention is paid to the role of free alkali and silicate in poorly-formulated systems and its deleterious effects on concrete performance, which necessitates a more complete understanding of the chemistry of geopolymerisation for the technology to be successfully applied. The relationship between CO₂ footprint and composition in comparison with Portland-based cements is quantified.     

低密度、高强度DG型高变催化剂的研制

本文叙述了一种适合大型氨厂使用的、堆密度低到1.25 kg·L^-1、还原态侧压强度高达350 N·cm^-1以上、本体含硫＜500 ppm(wt)、低温活性好的高温变换催化剂的研制开发过程 还介绍了催化剂制备工艺特点和工业试用效果。     

基于组合给定曲线的复合控制器伺服控制

研究了实际应用中板材矫直工艺对液压缸响应过程的要求,提出了组合给定曲线,从而减轻了大质量、大惯性系统在响应阶跃、斜坡信号时的冲击以及对系统的危害。结合基于跟踪-微分器的非线性比例、积分和微分控制,提出了基于组合给定曲线的位移、速度及加速度的复合控制器,并通过仿真分析和其在全液压矫直机中的实际应用验证了本文算法的可行性和实用性。     

泽城溢洪道弧形闸门制作工艺及质量控制

弧形闸门是堤坝闸门中制作难度最大的一种闸门之一,从面板的排料,到每块面板的卷弧、弧形工作台的精细调整、每一道焊缝的施焊,再到整体组装,每一道工序的要求都极为严格。文中从细节入手,详细介绍了山西省泽城西安水电站（二期）工程溢洪道弧形闸门的制作工艺过程、质量控制关键点等内容。     

Ergonomics aspects of the automated factory

Abstract

The paper outlines some of the implications for ergonomics of the current trend towards ‘automated factories’; ones in which human functions will be largely supervisory and minute-by-minute control will be by computers. These implications are discussed under the headings: locus of control and accountability; organization, staffing and training issues; decision aids; the transfer of knowledge among multiple users; and knowledge capture. It is clear that much of ergonomics knowledge is relevant to these matters; nevertheless there are areas where more research is required. These are outlined at the end of the paper.