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⊙第1篇⊙

制造业的一枝奇葩--高压水射流加工技术
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注意:本论文已在《机械设计与制造工程》(1999,3:1~2)杂志发表,
使用者请注明论文出处

大连理工大学   赵伟 刘晓冰 朱派龙

摘要 论述了高压水射流加工技术的起源、切割机理,并介绍了获得高压水射流的基本原理和应用范围。
关键词 高压 水射流 切割机理

A Exciting Flower of Manufacturing——High Pressure Water Jet Cutting Technology

Zhao Wei ,Liu Xiaobing ,Zhu Pailong

Abstract This paper tells the origin and cutting mechanism of water jet cutting technology, and introduces fundamental of getting high pressure water jet and its application .
Key words: high pressure; water jet; cutting mechanism


⊙第2篇⊙

面向对象的液压系统分析研究
(观看全文请点击上面的链接)
注意:本论文已在《机械科学与技术》(2000.19(1):146~149)杂志发表,
使用者请注明论文出处

董建华 刘晓冰
(大连理工大学CIMS中心 116023)

摘要:本文介绍了面向对象的分析方法,并给出了一种面向对象的分析模型的表达方法。以液压系统设计为工程应用背景,探讨了面向对象的分析方法在工程系统分析中的应用。按照类—对象层、结构层、主题层、属性层和服务层五个层次分析了液压系统的类层次构成及其连接与通信。
关键词:对象,面向对象的分析,液压系统。

Research on Hydraulic System Design with Object-Oriented Analysis Method

Dong Jianhua, Liu Xiaobing

CIMS Center of Dalian University of Technology 116023

Abstract:Object-Oriented Analysis (OOA) is introduced and a representation method of OOA is provided in this paper。Hydraulic system is selected as engineering application background.How to apply OOA method to engineering applications is discussed.According to Class-Object level、 Structure level、Subject level、Attribute level、Service level these five levels,we analysis the class hierarchy of hydraulic system ,their interrelation and their communication.
Keywords:Object,Object-Oriented Analysis (OOA),hydraulic system


⊙第3篇⊙

微机械元件和仪器新进展
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注意:本论文已在《光学精密工程》(1999,7(1):10~15)杂志发表,
使用者请注明论文出处

大连理工大学机械系 邵培革

长春光学精密机械研究所 王立鼎

 

摘要微机械元件和微机械仪器,适于大批量生产,具有成本低廉、性能优良和体积微小及集成度高的特点,近十年来,研制、开发及市场扩大方面取得了巨大的进展,展现了美好的前景。

New Progress of MEMS Component and Instrument

Dalian University of Science and Technology Shao Pei-ge
Changchun Institute of and Optics and Fine Mechanics Wang Li-ding Ren Yan-tong

Abstract:MEMS component and Instrument are suitable for batch manufacture and have the advantage of low price, high reliability, smaller volume and large-scale integration. In this decade a great progress has been made in the research, development and marketing of this field, which suggests a bright future.


⊙第4篇⊙

基于单义域邻接图的工程图纸扫描图象的字符提取
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注意:本论文已在《工程图学学报》(2000.21(2):90~95)杂志发表,
使用者请注明论文出处

张习文 欧宗瑛
(大连理工大学机械工程学院,CAD&CG研究所 大连 116024)

摘要:工程图纸扫描图象的图文分割是一个重要问题。本文在构建单义域邻接图基础上来提取字符及其特征。图文分离先从单义域中筛选字符笔划域,进行初步分离。然后,以字符笔划域为起点,遍历邻接图来搜索邻接字符笔划域,提取字符域,分析特性作进一步筛选。以字符域邻近与共线为判据来组合字符串域,字符域邻近是用其外接膨胀矩形相交来判定。利用共串字符域外接矩形中心及所附图形对字符域进行定向。对非水平字符域旋转至水平,并构建其单义域邻接图,以表达几何与拓扑特征,为后续识别作准备。实例表明,本算法可以较好地处理字符与图形的粘连问题,提取效果很好,且能够描述字符整体特征。
关键词: 单义域邻接图,图文分离,字符笔划域,字符提取,特征提取。

An Algorithm of Extracting Characters from Scanned Image of Engineering Drawings Using Primitive Region Adjacency Graph

Zhang Xiwen, Ou Zongying
(Institute of CAD&CG, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024)

Abstract:It is a important issue how to separate text from scanned image of engineering drawings. The paper presents an algorithm to extract characters and their features from images using Primitive Region Adjacency Graph. We can easily get character stroke regions from primitive regions. At start of a character stroke region, a character region grows by traversing the graph for adjacent character stroke regions. After analyzing features of character regions, we can get real character regions. A string can be got through combining those near and collinear character regions. If rectangles inflated of two character regions are intersected, they are near. The direction of a string region is attained by the center points of enclosed rectangles of characters shared by the string and figures attached. Then characters not horizontal are rotated to horizontal. A Primitive Region Adjacency Graph can represent geometrical and topological features of a character region, which is helpful to extract features of a character region. Some applications show that the algorithm can deal with adherence of characters to graphics, and is effective and robust.
Key words Primitive Region Adjacency Graph, text-graphics separation, character stroke regions, character extraction, feature extraction


⊙第5篇⊙

基于单义域邻接图的圆弧与圆识别
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注意:本论文已在《中国图像图形学报》(2000.5(1):70~74)杂志发表,
使用者请注明论文出处

张习文 欧宗瑛
(大连理工大学机械系CAD&CG研究所
大连 116024)  

摘要: 工程图纸扫描输入与识别理解是CAD推广和普及的关键步骤之一,主要解决已有大量图纸再利用问题。在工程图纸扫描图象识别研究中,圆弧识别是识别算法中的重点和难点。传统的圆弧识别多是基于线段逼近。本文提出一种基于单义域邻接图的圆弧及圆识别算法,可以直接提取圆弧。对二值图象作水平黑游程编码,相关游程基于线宽与拓扑的一致性构成条形域,对其中多义域进行分裂得单义域(线段域和圆弧域)。单义域邻接图可较好描述图象的几何属性与拓扑关系。单义域具有明显的形状意义(线段、圆弧、箭头等),提高了识别的整体性。圆弧及圆的识别先从邻接图顶点中抽取圆弧域,作为种子圆弧,然后从此出发遍历图,按照同圆来建立路径,进行整弧和整圆增长,最终获得圆弧和圆的几何表达。实例表明,本算法可以较好地处理圆弧与线段及圆弧的相交与相切,适应性较强、识别率较高。
关键词 工程图纸,矢量化,圆弧识别,条形域,单义域邻接图。

An Algorithm for Recognizing Circular Arcs and Circles Using Primitive Region Adjacency Graph

Zhang Xiwen ,Ou Zongying
(CAD&CG Institute, Dalian University of Technology, Dalian 116024)

Abstract: The scanning input and recognition of engineering drawings is a key step in CAD, and is to reuse lots of engineering drawings. In study on recognition of scanned image of engineering drawings, the recognition for circular arcs is an important and difficult problem. Recent algorithms of recognizing arcs are mainly about approximation with lines. This paper presents an algorithm for recognizing arcs and circles using Primitive Regions Adjacent Graph. The method can directly extract arc. The binary image is encoded with black horizontal runlength. A stripe region consists of correlative runlengths with the same width and topology. The stripe regions then can be segmented as some primitive regions (line and arc). The Graph is used to describe geometrical property and topological constraint. The primitive region supplies shape information (line, arc, arrow etc) improving integrality of recognition. After extraction of the arc region from regions, the seed for an arc is obtained. By traversals for the graph, the seed arc grows by constrains for the same circle. Some applications to recognize arcs and circles are finally provided, which show that the algorithm is effective and robust, can solve well intersection and tangency of between a arc and a line or a arc.
Key words engineering drawings, vectorization, recognition for circular arc, stripe region, Primitive Region Adjacency Graph


⊙第6篇⊙

制造产品智能集成报价系统研究
观看全文请点击上面的链接
注意:本论文已在《组合机床与自动化加工
》(1999,12:24~27)杂志发表,
使用者请注明论文出处

张暴暴 刘晓冰 陈晓川 冯辛安
(大连理工大学
CIMS中心)

摘 要:制造产品报价及其系统的研究与开发需要处理许多结构化和非结构化的因素,这些因素包括技术因素、财务因素和商务报价因素等。以往,由于专业的局限,报价系统的功能比较单一。本文提出了制造产品智能集成报价系统并对其进行研究。
关键词:制造产品;智能集成;报价系统;非结构化;自学习
中图分类号:TP182;TP311.1  文件标识码:B  文章编号:1001-2265(1999) 12-0024-04

Research on an intelligent integrated quoting-price system for manufacturing-products

Zhang Baobao Liu Xiaobing Chen Xiaochuan Feng Xinan

Abstract: Developing a quoted-price system for manufacturing productions is often in relation to many factors between construction and non-construction.Because of the professional limity,its functions was singleness.So this paper proposes a new conception and measure for it,an intelligent integrated quoting-price system for manufacturing-products to discuss.
Key words:manufacturing products;intelligent integrated;quoting-price system;non-construction;self-learning


⊙第7篇⊙

薄膜型超磁致伸缩微执行器的研究现状
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注意:本论文已在《
压电与声光》(2000,22(3):157~159,167)杂志发表,
使用者请注明论文出处

贾振元  武丹  杨兴  郭东明  郭丽莎
(
大连理工大学机械工程学院  116024)

摘要:超磁致伸缩薄膜是一种性能优良的新型微驱动元件,在查阅大量文献的基础上,介绍了超磁致伸缩薄膜驱动的原理,综述了薄膜型超磁致伸缩微执行器的开发和最新研究成果,重点介绍了薄膜型超磁致伸缩微执行器在微流体控制系统中的应用,在线性超声微马达中的应用和在微小型行走机械中的应用,并对超磁致伸缩薄膜在微执行器中的发展提出了展望。
关键词 超磁致伸缩 微执行器 薄膜

Current Study on Giant Magnetostrictive Thin Film Microactuators

Jia Zhenyuan, Wu Dan , Yang Xing,Guo Dongming,Guo Lisha

(School. of Mechanical Engineering,Dalian University of Technology ,Dalian,116024)

Abstract: Giant Magnetostictive thin film is a new type of actuating components with high property.Based on many references,the article introduces the actuating principle of Giant magnetostictive thin film,dicusses the late research results of giant magnetostrictive thin film microactuators.Emphasis on the apply to microfluid control system,linear ultrasonic micromotor and micro walking mechanism.Put forward the progress of giant magnetostictive thin film in microactuators.
Key words:giant magnetostictive ; microactuator ; thin film


⊙第8篇⊙

超磁致伸缩执行器及其在流体控制元件中的应用
观看全文请点击上面的链接
注意:本论文已在《
机床与液压》(2000,2:1~4,27)杂志发表,
使用者请注明论文出处

贾振元 杨兴 武丹 郭东明
(大连理工大学机械工程学院  116024)

摘 要:超磁致伸缩材料是一种新型的功能材料,在查阅大量文献的基础上,介绍了超磁致伸缩执行器的原理和分类及其在流体控制元件中的应用研究现状,并对超磁致伸缩执行器在流体机械中的应用前景进行了展望。
关键词:超磁致伸缩 执行器 流体控制元件

Abstract: Giang magnetostictive material is a new type of functional materials.Based on so many references,introduce the principle and classification of giant magnetostictive actuators,current study on fluid control components.Put forward the future of giant magnetostictive actuators in fluid mechanism.
Key word:giant magnetostictive actuator fluid control components


⊙第9篇⊙

基于知识的刀具CAD模式研究
下载论文全文请点击上面的链接
注意:本论文已在《
机械科学与技术》(1999,18(3):506~508)杂志发表,
使用者请注明论文出处
孙玉文 何芳 刘健
(大连理工大学先进制造技术研究所, 116024

摘 要:在分析刀具设计过程和知识特点的基础上,结合齿轮滚刀CAD系统--GHES的研制,对刀具CAD系统的框架结构、知识表示、工作图绘制等关键技术进行了探讨。利用本文给出的模式,可以提高刀具CAD系统的柔性与智能性。
关键词:复杂刀具 计算机辅助设计 知识表示
中图号:TG 702

Research on Knowledge-Based CAD Model for Cutting Tool

Sun Yuwen, He Fang, Liu jian
(Dalian University of Technology,Dalian, 116024)


⊙第10篇⊙

合理化工程系统结构的探讨
下载论文全文请点击上面的链接
注意:本论文已在《
机械科学与技术》(1998,17(3):480~482)杂志发表,
使用者请注明论文出处

李龙梅 张暴暴 刘晓冰
(大连理工大学CIMS中心 大连 116024

摘要:简要介绍了合理化工程的目标和基本原理,提出计算机辅助合理化工程完整体系结构,并根据作者对工厂实施的经验,给也了合理化的实施方法。
关键词:合理化工程 产品结构重组 设计过程合理化
中图号:TB 21

Discussion System Construction of Ratio Engineering
Li Longmei, Zhang Baobao, Liu Xiaobing
(Dalian University of Technology, Dalian, 116024)

ABSTRACT: In this paper, the principle and the aims of Ratio Engineering(RE) are introduced briefly. A complete system construction of computer aided RE is built, and steps of implementation are described according to our practical experience.
Keywords:Ratio engineeirng,Product structure reengineering, Process engineering reengineering


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