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1、 Reference number ISO 10303-55:2005(E) ISO 2005 INTERNATIONAL STANDARD ISO 10303-55 First edition 2005-02-01 Industrial automation systems Product data representation and exchange Part 55: Integrated generic resource: Procedural and hybrid representation Systmes dautomatisation industrielle Reprsent
2、ation et change de donnes de produits Partie 55: Ressources gnriques intgres Reprsentation procdurale et hybride Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:54:02 MSTNo reproduction or
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6、, please inform the Central Secretariat at the address given below. ISO 2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in w
7、riting from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2005 All rights reserved Copyri
8、ght International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:54:02 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 10303-55:2005(E) ContentsPage 1Scope. . . . . . . . . . . . .
9、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 2Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 3 Terms, defi nitions and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 3.1 Terms defi ned in ISO 1
10、0303-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 3.2 Terms defi ned in ISO 10303-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3.3 Terms defi ned in ISO 10303-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3.4 Terms defi ned in ISO 10303-43. . . . . .
11、. . . . . . . . . . . . . . . . . . . . . . .3 3.5 Terms defi ned in ISO 10303-108 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 3.6 Other terms and defi nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3.7Abbreviations . . . . . . . . . . . . . . . . . . . . . .
12、 . . . . . . . . . . . . . . . . .5 4Procedural model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 4.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 4.2Fundamental concepts and assumptions . . . . . . . . . . . . .
13、. . . . . . . . . . . .6 4.2.1Procedural models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 4.2.2Hybrid models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 4.2.3Explicit selected elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 4.2.
14、4Dual models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 4.2.5Representation of constructional operations in procedural models. . . . . . . .10 4.2.6Implicit and explicit constraints . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.2.7Suppression of constructional
15、operations. . . . . . . . . . . . . . . . . . . . .12 4.2.8Exchange of procedural and hybrid models . . . . . . . . . . . . . . . . . . . .12 4.2.9Variational cases of procedural and hybrid models. . . . . . . . . . . . . . . .12 4.3 Procedural model entity defi nitions. . . . . . . . . . . . . . .
16、. . . . . . . . . . . .13 4.3.1explicit procedural representation relationship . . . . . . . . . . . . . . . . . .13 4.3.2explicit procedural representation item relationship. . . . . . . . . . . . . . .14 4.3.3procedural representation. . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 4.3.
17、4procedural representation sequence . . . . . . . . . . . . . . . . . . . . . . . .16 4.3.5user selected elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 4.3.6indirectly selected elements . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 5Procedural shape model . . .
18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 5.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 5.2Fundamental concepts and assumptions . . . . . . . . . . . . . . . . . . . . . . . . .20 5.2.1Procedural shape models . . . . .
19、 . . . . . . . . . . . . . . . . . . . . . . . . .21 5.2.2Hybrid shape models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 5.2.3Explicit selected elements in a shape model . . . . . . . . . . . . . . . . . . . .22 5.2.4Dual shape representations . . . . . . . . . . . . . . . . .
20、 . . . . . . . . . . . .22 5.2.5Design rationale for shape models . . . . . . . . . . . . . . . . . . . . . . . . .22 5.3 Procedural shape model type defi nitions . . . . . . . . . . . . . . . . . . . . . . . . .23 5.3.1shape representation item . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、. .23 5.4 Procedural shape model entity defi nitions . . . . . . . . . . . . . . . . . . . . . . . .23 5.4.1explicit procedural shape representation relationship . . . . . . . . . . . . . . .23 5.4.2explicit procedural geometric representation item relationship. . . . . . . . .24 5.4.3procedural sha
22、pe representation . . . . . . . . . . . . . . . . . . . . . . . . . .25 5.4.4procedural shape representation sequence. . . . . . . . . . . . . . . . . . . .25 5.4.5procedural solid representation sequence . . . . . . . . . . . . . . . . . . . . .26 c ?ISO 2005 All rights reservediii Copyright Intern
23、ational Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:54:02 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 10303-55:2005(E) 5.4.6procedural surface representation sequence . . . .
24、 . . . . . . . . . . . . . . . .27 5.4.7procedural wireframe representation sequence . . . . . . . . . . . . . . . . . .28 5.4.8user selected shape elements. . . . . . . . . . . . . . . . . . . . . . . . . . .28 5.4.9indirectly selected shape elements. . . . . . . . . . . . . . . . . . . . . . . .29
25、 Annex A (normative)Short names of entities . . . . . . . . . . . . . . . . . . . . . . . . . .31 Annex B (normative)Information object registration. . . . . . . . . . . . . . . . . . . . .32 B.1 Document identifi cation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 B.2 Schema i
26、dentifi cation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 B.2.1 procedural model schema identifi cation . . . . . . . . . . . . . . . . . . . . . .32 B.2.2 procedural shape model schema identifi cation . . . . . . . . . . . . . . . . . .32 Annex C (informative)Computer i
27、nterpretable listings. . . . . . . . . . . . . . . . . . . . .33 Annex D (informative)EXPRESS-G diagrams. . . . . . . . . . . . . . . . . . . . . . . . .34 Annex E (informative)Examples of the use of this part of ISO 10303. . . . . . . . . . . . .38 E.1Example of non-geometric application of procedu
28、ral modelling. . . . . . . . . . . .38 E.2Example of intended usage of the procedural shape model schema. . . . . . . . .38 E.3Example of the use of variational (parameterization and constraint) information with a procedural model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、 . .40 E.4Example of the embedding of operation sequences and the recording of design rationale 45 Bibliography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30、. . .48 Figures Figure 1Schema level diagram of relationships among ISO 10303-55 schemas (inside the box) and other resource schemas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii Figure D.1procedural model schema EXPRESS-G diagram 1 of 1 . . . . . . . . . . . . . .35 Figure D.2p
31、rocedural shape model schema EXPRESS-G diagram 1 of 2 . . . . . . . . . . .36 Figure D.3procedural shape model schema EXPRESS-G diagram 2 of 2 . . . . . . . . . . .37 Figure E.1Relationships between instances of procedural, variational and explicit models for the cases of (a) no variational model, (
32、b) no procedural model, and (c) all three models. . .42 Table A.1Short names of entities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 ivc?ISO 2005 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=H
33、P Monitoring/1111111164 Not for Resale, 12/04/2007 20:54:02 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 10303-55:2005(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The
34、 work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical com- mittee has been established has the right to be represented on that committee. International organizations, governmental and non-go
35、vernmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical stan- dardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part
36、2. The main task of technical committees is to prepare International Standards. Draft International Stan- dards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75% of the member bodies casting
37、a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 10303 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10303-55 was prepared by Technical Committee ISO/TC 184/SC 4, Industrial automat
38、ion systems and integration, Subcommittee SC 4, Industrial data. ISO 10303 consists of a series of parts, under the general title Industrial automation systems and integration Product data representation and exchange. The structure of ISO 10303 is described in ISO 10303-1. Each part of ISO 10303 is
39、a member of one of the following series: description methods, implementation methods,conformancetestingmethodologyandframework,integratedgeneric resources, integrated application resources, application protocols, abstract test suites, application interpreted constructs, and application modules.This
40、part is a member of the integrated generic resources series. The integrated generic resources and the integrated application resources specify a single conceptual product data model. A complete list of parts of ISO 10303 is available from the Internet: Should further parts of ISO 10303 be published,
41、 they will follow the same numbering pattern. c ?ISO 2005 All rights reservedv Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:54:02 MSTNo reproduction or networking permitted without lice
42、nse from IHS -,-,- ISO 10303-55:2005(E) Introduction ISO 10303 is an International Standard for the computer-interpretable representation of product infor- mation and for the exchange of product data. The objective is to provide a neutral mechanism capable of describing products throughout their lif
43、e cycle. This mechanism is suitable not only for neutral fi le ex- change, but also as a basis for implementing and sharing product databases, and as a basis for archiving. This part of ISO 10303 is a member of the integrated resources series. Major subdivisions of this part of ISO 10303 are: Proced
44、ural model schema; Procedural shape model schema. This part of ISO 10303 provides general mechanisms for the representation of models defi ned in terms of the operations used to construct them. The constructional operations themselves are represented by entity data types defi ned in other parts of I
45、SO 10303, interpreted as constructors. Procedural models have the advantage of being easy to edit, simply by changing values of parameters used as arguments of their constructional operations. Such models are said to embody design intent information, in the sense that modifi cations to them conform
46、to the scheme of parameterization imposed by their original creator, and also comply with any constraints implied by the particular constructional operations used. Thus the transfer of a procedural model into a receiving system carries with it information as to how the model will behave when edited
47、following the transfer. However, procedural models also have the disadvantage of containing (in their purest form) little or no explicit information about the result of actually performing the sequence of operations. This fact makes them unsuitable as a basis for the automation of many engineering p
48、rocesses that depend on the use of explicit geometric information, for example numerically controlled machining or inspection. Systems for engineering purposes commonly achieve the advantages of both modelling approaches through the use of a dual representation, comprising a primary representation o
49、f the procedural or con- struction history type together with a secondary explicit representation. Other ISO 10303 resources pro- vide the elements needed for explicit representions. This part of the standard not only specifi es resources for procedural representations but also provides a dual model capability by enabling