摘要
论文课题是为唐山陶瓷集团设计实施CAD/CAM/CAE一体化方案,实现企业的信息流、物料流、资金流的集成,整个工作属于唐陶集团CIMS工程的一部分。相对于C~3p(CAD/CAM/CAE和PDM)的提法,我们提出C~3M(CAD/CAM/CAE和MIS)体系,这是一种针对于陶瓷企业的定制化的经济型C~3p方案,它是一套集设计、生产与管理为一体的集成系统。C~3M一方面寻求一种各CAx等单项计算机辅助技术的集成环境及其之间的数据逻辑,另一方面,则对基于面向对象技术的MIS系统软件设计方法进行了尝试与研究。
在本学位论文中,主要对以下几个问题进行了研究与讨论:
(1)通过考察陶瓷企业中产品的设计制造流程,提出应用集成的三维CAD/CAM&RPM技术,从技术手段上使得产品设计精度在制造过程中得到完全保证;为提高陶瓷产品研发效率,文中提出了一种在计算机支持的协同设计环境下的陶瓷产品的并行研发模式。
(2)考虑到中小企业的资金与技术实力相对较弱的实际情况,本文提出一种通过CAD/CAM软件的二次开发,实现产品设计信息与管理信息系统中BOM表的交互通信的方法。
(3)针对大型管理信息的设计,本文提出了扩展的信息系统的面向对象分析工具、策略与模型,并应用基于“统一建模语言”UML的Visual Modelor 2.0作为陶瓷管理信息系统的设计工具,实现了面向对象分析、面向对象设计与面向对象编程的高度集成。在设计阶段,通过将面向对象中的关系表用传统关系数据库的数据定义语言来描述,从而实现了面向对象数据模型向关系型数据模型的转换。
(4)系统安全是大型数据库系统设计中的一个重要问题。文中提出应用“双库技术”(即manage库和system库)的方法,通过设计一个安全保护层来隔离用户与系统数据,从而达到系统安全保护目的。
(5)在系统实施阶段,文中给出了网络规模计算公式,以此来分析计算网络流量负荷,并将结果作为选取计算机与网络设备的依据;同时应用系统工程的网络规划技术指导系统的实施。
The project of this dissertation is to design and construct the integrated CAD/CAM/CAE scheme for Tangshan Ceramics Group. The object is to realize the integration of information flow, material flow and financial flow within the group, and what we've done belongs to the group's CMIS project.
Corresponding to C3P(CAD/CAM/CAE & PDM), the C3M(CAD/CAM/CAE & MIS) system is presented, which is virtually an economic C3P scheme customed to ceramics enterprises. This scheme integrates the activities of design, manufacturing and production management. On one hand, C3M seeks a kind of integration environment of all items of CAx technology and the inner data logic among them, on the other it studies the object-oriented MIS development methodology.
In this thesis, the following questions are studied and discussed:
(1) Through the investigation of the product design and manufacturing process in ceramics enterprises, the integrated technology of 3D CAD/CAM&RPM is introduced to ensure the design accuracy to be transmitted into the manufacturing stage well and truly. Meanwhile a concurrent R&D model of ceramics is presented under the environment of Computer Supported Cooperative Design for the improvement of design efficiency.
(2) In view of the fact that medium and small enterprises are comparatively weak in finance and technology, a method is put forward that the product design information can be interactively transmitted to the BOM in MIS by means of the users' development of CAD/CAM software.
(3) The Extended-OOA tools, policies and model are put forward for the analysis of large-scale MIS, and the Visual Modelor 2.0 based on Unified Modeling Language is used to develop the Ceramics Products Management Information System, which integrates the OOA, OOD and OOP. The object-oriented data model is transformed to relationship data model by means of the translation of relationship tables in OODBMS to conventionally data definition language in RDBMS.
(4) System security is one of the chief problems in large-scale database design. The method
called "Double Bases"(manage database and system database) is presented to isolate the users from the system data, and thus the system security is guaranteed.
(5) At the stage of system implementation, several formulations are presented for the evaluation of flux charge of network, which is used as the reference to select equipment of computers and network. Finally, the network planning technology in system engineering is introduced to guide the implement and construction.
引文
[1] Delcam International. Delcam's Power Solution. http://www. delcam.com
[2] 窦万春,李东波,李坤宇,等.面向并行工程广义C~nP集成系统复合建模理论分析与研究.中国机械工程,1999,10(6):648~651
[3] J. Campbell. Opportunities for ceramics industry. British Ceramic Transaction, 1997, 96(6)
[4] Chee Kai Chua, Robert Gay, Wolfgang Hoheisel. Computer Aided Decoration of Ceramic Tableware. Part Ⅰ: 3-D Decoration. Computer & Graphics, 1997, 21(5): 641~653
[5] Paul E. Helgesen. Computer Aided Design for Ceramic Dinnerware. Ceramic Bulletin, 1990, 69(1): 77~79
[6] J. W. Halloran. Freeform fabrication of ceramics. British Ceramic Transaction, 1999, 98(6)
[7] Raija Siikamaki. CAD—Computer-Aided Design or Computer Against Designer? Ceramic Bulletin, 1992, 71(3)
[8] 张明,曾令可,李明.CAD技术在陶瓷工业中的应用.中国陶瓷,1997,33(4):36~38
[9] 侯炳辉.管理信息系统理论与教育.中国金融电脑,1997,1:4~6
[10] 王再云,武坤,王树文.论企业信息化过程中的几个问题.软件世界,1999,4:56~57
[11] 曾孜,贺继钢.工业企业CAD和MIS系统的一体化设计.工业工程,1998,1(1):47~51
[12] 向中文,陈云,方明伦.UG环境下CAD与MIS系统的集成——面向中小企业CMIS应用工程的一种信息集成方法.机械设计与制造工程,2000,29(4):24~26
[13] Pennell J P, Winner R I, Bertrand H E, et al. Concurrent engineering: an overview for autotestcon. Philadelphia, PA, USA: AUTOTESTCON'89: The Systems Readiness Technology Conference, 1989:88~99
[14] 赵象元,刘飞,余力,等.并行工程在陶瓷产品开发制造中的应用。重庆大学学报(自然科学版),2000,23(4):4~8
[15] P. W. Wormald. The applicatioin of Computer Aided Industrial Design(CAID) for Ceramic Sanitaryware. British Ceramic Transactions, 1993, 92(4): 172~175
[16] B. L. Griffiths. Compter aided design and surface pattern decoration in whiteware ceramics. British Ceramic Transactions, 1995, 94(4): 169~170
[17] Peter Dickin. CADCAM at Wedgwood. American Ceramic Society BullEtin, 1993, 72(12): 71~74
[18] Chee Kal Chua, Robert Gay, Wolfgang Hoheisel. Computer Aided Decoration of Ceramic Tableware. Part Ⅱ: Rapid Toling. Computer & Graphics, 1997, 21(5): 655~672
[19] Howard Sims. Computerized Design of Decals. Ceramic Bulletin, 1992, 71(3): 277~278
[20] P. Mclaughlin. Observations on the Use of Computers in the Ceramic Industries(Part 1). British Ceramic Transaction, 1988, 87:113~116
[21] P. Mclaughlin. Observations on the Use of Computers in the Ceramic Industries(Part 2). British Ceramic Transaction, 1988, 87:146~148
[22] Kochan. Solid Free-Form Manufacturing-Possibilities and Restrictions. Computers in Industry, 1992, 20(2): 133~140
[23] Chua. C. K. Three-dimensional Rapid Prototyping Technologies and Key Development Areas. Computing and Control Engineering Journal. 1994, 5(4): 200~206
[24] Kochan, Chua. C. K. State-of-the-art and Future Trends in Rapid Protoping and Manufacturing. International Journal of Information Technology, 1995, 1 (2): 209~217
[25] T. J. Coole, D. G. Cheshire, D. Newman, et al. Excessive Tool Wear and Moisture Content in Ceramic Plaster Machining. British Ceramic Transactions, 1999, 98(3): 151~154
[26] 王珏,吴军。面向对象的软件工程在MIS开发中的应用。南京化工大学学报,2000,22(4):25~28
[27] 彭志忠.MIS开发方法的比较及其统一性研究。交通与计算机,1999,17(6):24~27
[28] Peter Coad, Edward Yourdon. Objected-Oriented Analysis. Englewood Cliffs, NJ: Prentice Hall, 1990
[29] Peter Coad, Edward Yourdon. Objected-Oriented Design. Englewood Cliffs, NJ: Prentice Hall, 1991
[30] 王涛.有关大型信息系统的面向对象开发方法研究.计算机系统应用,2000,2:19~22
[31] 牛德力,毛国苗.面向对象的分析模型及其应用,测绘学院学报,2000,17(2):111~113
[32] Zheng Xiaojun. Object Oriented Analysis [J]. IEEE Computer, 1990, 23(8): 126
[33] 梅姝娥,徐南荣,仲伟俊.面向对象系统分析方法研究.系统工程理论与实践,1977,11:1~6
[34] 王文玲,金茂忠.UML模型及其应用.计算机工程与应用,1999,11:47~50
[35] 鲁博,柴跃廷.关于统一建模语言——UML.计算机工程与科学,2000,22(4):57~61
[36] 经致远,林良明,朱宏擎.可视化建模工具的应用.武汉交通科技大学学报,1999,23(6):655~6659
[37] 王云,周伯生.标准建模语言UML简介.计算机应用研究,1999,12:44~49
[38] Rational Software Corp. Unified Modeling Language Notation Guide[EB/OL]. http://www. Rational. com, 1998
[39] 张泉,陈涵生.面向对象分析和涉及领域的统一建模语言UML.计算机工程,1998,24(10):42~44
[40] 杨丰萍.统一建模语言UML及其支持工具.华东交通大学学报,2000,17(3):25~29
[41] Microsoft Corporation. Miceosoft Visual Molder Version 2.0, 1998
[42] 廖永红,黄战.面向对象的分析、设计及实施直通车——面向对象的统一建模语言及工具.电脑与信息技术,2000(5):15~17
[43] 刘冬杰.面向对象管理信息系统的设计与实现.微型机与应用,1997,8:11~13
[44] 李子坚.传统RDBMS中加入OO机制方法研究.现代计算机,1998,60(1):6~8
[45] Jose A. Blakeley et al. Object- Oriented Database Design and Open System, Tutorial of Intl. Conf. On VLDB, 1994: 62~68
[46] 姚卿达,董祖明.数据模型的智能化扩充研究——面向对象的知识数据库模型.软件学报,1994,4:44~48
[47] 李琳,汪林林。面向对象数据库设计分析.重庆邮电学院学报,2000,12(1):51~54
[48] 司徒国强.关系数据库中规范化理论的应用研究.兰州铁道学院学报,1999,18(3):67~70
[49] 李建中,王珊.数据库系统原理.北京:电子工业出版社,1998.121~132
[50] 徐立新.大型管理信息系统安全模型.武钢技术,2000,38(1):31~34
[51] 彭永谦,柳旭.基于三层C/S结构MIS的权限设计.计算机工程与应用,2000,11:122~125
[52] Microsoft Transaction Server Help
[53] 愈鹤伟,牟艳华.CIS模式下MIS系统网络规模的分析.华南理工大学学报(自然科学版),2000,28(9):82~86
[54] Ron Soukup, Kalen Delaney. Microsoft SQLServer~(TM) 7.0技术内幕.北京:北京大学出版社,2000.101
[55] 周纳,陈娟.系统工程结构化思想在网络建设中的应用.湖南商学院学报,1999,6(5):56~58
[56] 谭文安,徐红,周伯生.集成化系统工程环境及其体系结构.计算机工程与应用,1995,5:37~39
[57] 肖捷.计算机网络综合布线系统工程方案的设计,计算机工程与应用,1999,7:114~117
[58] 但斌,刘飞,尹超.CIMS应用工程网络系统建设中的系统工程问题.工业工程,2000,3(3):34~37