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⊙第1篇⊙

制造業的一枝奇葩--高壓水射流加工技術
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注意:本論文已在《機械設計與制造工程》(1999,3:1~2)雜志發表,
使用者請注明論文出處

大連理工大學   趙偉 劉曉冰 朱派龍

摘要 論述了高壓水射流加工技術的起源、切割機理,并介紹了獲得高壓水射流的基本原理和應用范圍。
關鍵詞 高壓 水射流 切割機理

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⊙

面向對象的液壓系統分析研究
(觀看全文請點擊上面的鏈接)
注意:本論文已在《機械科學與技術》(2000.19(1):146~149)雜志發表,
使用者請注明論文出處

董建華 劉曉冰
(大連理工大學CIMS中心 116023)

摘要:本文介紹了面向對象的分析方法,并給出了一種面向對象的分析模型的表達方法。以液壓系統設計為工程應用背景,探討了面向對象的分析方法在工程系統分析中的應用。按照類—對象層、結構層、主題層、屬性層和服務層五個層次分析了液壓系統的類層次構成及其連接與通信。
關鍵詞:對象,面向對象的分析,液壓系統。

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⊙

微機械元件和儀器新進展
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注意:本論文已在《光學精密工程》(1999,7(1):10~15)雜志發表,
使用者請注明論文出處

大連理工大學機械系 邵培革

長春光學精密機械研究所 王立鼎

 

摘要微機械元件和微機械儀器,適于大批量生產,具有成本低廉、性能優良和體積微小及集成度高的特點,近十年來,研制、開發及市場擴大方面取得了巨大的進展,展現了美好的前景。

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⊙

基于單義域鄰接圖的工程圖紙掃描圖象的字符提取
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注意:本論文已在《工程圖學學報》(2000.21(2):90~95)雜志發表,
使用者請注明論文出處

張習文 歐宗瑛
(大連理工大學機械工程學院,CAD&CG研究所 大連 116024)

摘要:工程圖紙掃描圖象的圖文分割是一個重要問題。本文在構建單義域鄰接圖基礎上來提取字符及其特征。圖文分離先從單義域中篩選字符筆劃域,進行初步分離。然后,以字符筆劃域為起點,遍歷鄰接圖來搜索鄰接字符筆劃域,提取字符域,分析特性作進一步篩選。以字符域鄰近與共線為判據來組合字符串域,字符域鄰近是用其外接膨脹矩形相交來判定。利用共串字符域外接矩形中心及所附圖形對字符域進行定向。對非水平字符域旋轉至水平,并構建其單義域鄰接圖,以表達幾何與拓撲特征,為后續識別作準備。實例表明,本算法可以較好地處理字符與圖形的粘連問題,提取效果很好,且能夠描述字符整體特征。
關鍵詞: 單義域鄰接圖,圖文分離,字符筆劃域,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⊙

基于單義域鄰接圖的圓弧與圓識別
觀看全文請點擊上面的鏈接
注意:本論文已在《中國圖像圖形學報》(2000.5(1):70~74)雜志發表,
使用者請注明論文出處

張習文 歐宗瑛
(大連理工大學機械系CAD&CG研究所
大連 116024)  

摘要: 工程圖紙掃描輸入與識別理解是CAD推廣和普及的關鍵步驟之一,主要解決已有大量圖紙再利用問題。在工程圖紙掃描圖象識別研究中,圓弧識別是識別算法中的重點和難點。傳統的圓弧識別多是基于線段逼近。本文提出一種基于單義域鄰接圖的圓弧及圓識別算法,可以直接提取圓弧。對二值圖象作水平黑游程編碼,相關游程基于線寬與拓撲的一致性構成條形域,對其中多義域進行分裂得單義域(線段域和圓弧域)。單義域鄰接圖可較好描述圖象的幾何屬性與拓撲關系。單義域具有明顯的形狀意義(線段、圓弧、箭頭等),提高了識別的整體性。圓弧及圓的識別先從鄰接圖頂點中抽取圓弧域,作為種子圓弧,然后從此出發遍歷圖,按照同圓來建立路徑,進行整弧和整圓增長,最終獲得圓弧和圓的幾何表達。實例表明,本算法可以較好地處理圓弧與線段及圓弧的相交與相切,適應性較強、識別率較高。
關鍵詞 工程圖紙,矢量化,圓弧識別,條形域,單義域鄰接圖。

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⊙

制造產品智能集成報價系統研究
觀看全文請點擊上面的鏈接
注意:本論文已在《組合機床與自動化加工
》(1999,12:24~27)雜志發表,
使用者請注明論文出處

張暴暴 劉曉冰 陳曉川 馮辛安
(大連理工大學
CIMS中心)

摘 要:制造產品報價及其系統的研究與開發需要處理許多結構化和非結構化的因素,這些因素包括技術因素、財務因素和商務報價因素等。以往,由于專業的局限,報價系統的功能比較單一。本文提出了制造產品智能集成報價系統并對其進行研究。
關鍵詞:制造產品;智能集成;報價系統;非結構化;自學習
中圖分類號:TP182;TP311.1  文件標識碼:B  文章編號: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⊙

薄膜型超磁致伸縮微執行器的研究現狀
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注意:本論文已在《
壓電與聲光》(2000,22(3):157~159,167)雜志發表,
使用者請注明論文出處

賈振元  武丹  楊興  郭東明  郭麗莎
(
大連理工大學機械工程學院  116024)

摘要:超磁致伸縮薄膜是一種性能優良的新型微驅動元件,在查閱大量文獻的基礎上,介紹了超磁致伸縮薄膜驅動的原理,綜述了薄膜型超磁致伸縮微執行器的開發和最新研究成果,重點介紹了薄膜型超磁致伸縮微執行器在微流體控制系統中的應用,在線性超聲微馬達中的應用和在微小型行走機械中的應用,并對超磁致伸縮薄膜在微執行器中的發展提出了展望。
關鍵詞 超磁致伸縮 微執行器 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⊙

超磁致伸縮執行器及其在流體控制元件中的應用
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注意:本論文已在《
機床與液壓》(2000,2:1~4,27)雜志發表,
使用者請注明論文出處

賈振元 楊興 武丹 郭東明
(大連理工大學機械工程學院  116024)

摘 要:超磁致伸縮材料是一種新型的功能材料,在查閱大量文獻的基礎上,介紹了超磁致伸縮執行器的原理和分類及其在流體控制元件中的應用研究現狀,并對超磁致伸縮執行器在流體機械中的應用前景進行了展望。
關鍵詞:超磁致伸縮 執行器 流體控制元件

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⊙

基于知識的刀具CAD模式研究
下載論文全文請點擊上面的鏈接
注意:本論文已在《
機械科學與技術》(1999,18(3):506~508)雜志發表,
使用者請注明論文出處
孫玉文 何芳 劉健
(大連理工大學先進制造技術研究所, 116024

摘 要:在分析刀具設計過程和知識特點的基礎上,結合齒輪滾刀CAD系統--GHES的研制,對刀具CAD系統的框架結構、知識表示、工作圖繪制等關鍵技術進行了探討。利用本文給出的模式,可以提高刀具CAD系統的柔性與智能性。
關鍵詞:復雜刀具 計算機輔助設計 知識表示
中圖號: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⊙

合理化工程系統結構的探討
下載論文全文請點擊上面的鏈接
注意:本論文已在《
機械科學與技術》(1998,17(3):480~482)雜志發表,
使用者請注明論文出處

李龍梅 張暴暴 劉曉冰
(大連理工大學CIMS中心 大連 116024

摘要:簡要介紹了合理化工程的目標和基本原理,提出計算機輔助合理化工程完整體系結構,并根據作者對工廠實施的經驗,給也了合理化的實施方法。
關鍵詞:合理化工程 產品結構重組 設計過程合理化
中圖號: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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