The STEP Modular Architecture

2002 ◽  
Vol 2 (2) ◽  
pp. 132-135 ◽  
Author(s):  
Allison Barnard Feeney
Keyword(s):  
Initial Step ◽  
Technical Note ◽  
Model Data ◽  
Modular Architecture ◽  
Product Model ◽  
International Standard ◽  
Iso 10303 ◽  
Protocol Architecture ◽  
Step Standard

The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP (STandard for the Exchange of Product model data). Subsequent Technical Notes discussed various issues faced by users of STEP and how the ISO TC184/SC4 committee is addressing these issues. This paper presents the current move to modularize the STEP application protocol architecture. This paper describes the initial STEP architecture, requirements for improvements to the architecture, features of the new modular architecture, status and issues.

XML Representation of STEP Schemas and Data

2002 ◽  
Vol 2 (1) ◽  
pp. 69-71 ◽  
Author(s):  
Joshua Lubell ◽  
Simon Frechette
Keyword(s):  
Technical Note ◽  
Exchange Mechanism ◽  
Extensible Markup Language ◽  
Markup Language ◽  
Model Data ◽  
Product Model ◽  
International Standard ◽  
Extensible Markup ◽  
Exchange Medium ◽  
Step Standard

The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP (Standard for the Exchange of Product Model Data). Subsequent Technical Notes discussed various issues faced by users of STEP and how the ISO TC184/SC4 committee is addressing these issues. This article discusses the representation of STEP data using the Extensible Markup Language (XML). We begin by presenting XML’s advantages as an exchange medium for STEP. We then discuss some of the issues involved in designing an XML exchange mechanism for STEP and conclude with an update of SC4’s STEP/XML activities.

The NIDDESC Ship Product Model: The STEP Solution

1994 ◽  
Vol 10 (01) ◽  
pp. 39-50
Author(s):  
Richard H. Lovdahl ◽  
Douglas J. Martin ◽  
Michael A. Polini ◽  
Ron W. Wood ◽  
Michael L. Gerardi ◽  
...  
Keyword(s):  
Data Exchange ◽  
Digital Data ◽  
Model Data ◽  
Product Model ◽  
International Standard ◽  
Layered Architecture ◽  
Approach Goals ◽  
Step Standard

This paper presents the purpose, approach, goals and progress of the tasks that make up the standard for a digital Ship Product Model. The Navy/Industry Digital Data Exchange Standards Committee (NIDDESC) Standards will be a part of the Standard for the Exchange of Product Model Data (STEP) International Standard. The STEP standard has a layered architecture in which basic core definitions are used by many industry and product specific standards such as the NIDDESC Standards.

Extension of the STEP Standard for Parametric CAD Models

2001 ◽  
Vol 1 (3) ◽  
pp. 269-275 ◽  
Author(s):  
Michael J. Pratt
Keyword(s):  
Technical Note ◽  
Present Contribution ◽  
International Standard ◽  
Cad Models ◽  
Parametric Cad ◽  
Iso 10303 ◽  
Step Standard

The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP, and the second [2] dealt with some practical aspects of using the standard for the exchange of CAD models. It was noted in [1] that the current published parts of the standard are restricted to the representation and exchange of non-parameterized models. The present contribution discusses the implications of that restriction and describes the progress of the ISO TC184/SC4 committee towards its removal. As will be shown, this extension of the STEP standard will lead to considerable benefits for industry.

PDES/STEP: A Status Report

1992 ◽  
Author(s):  
Steven A. Ryan
Keyword(s):  
Data Exchange ◽  
Status Report ◽  
Model Data ◽  
Product Model ◽  
Basic Premise ◽  
Strong Basis ◽  
International Standard ◽  
Current State ◽  
Step Step ◽  
Product Definition

Abstract This status report provides a current overview of the work that is progressing toward the development of an international Standard for the Exchange of Product model data (STEP). STEP has the potential for revolutionizing the exchange of product definition data. The current state of the art in product data exchange requires knowledge of both the sending and receiving system in order to expect a reliable exchange to occur. The basic premise that STEP is built upon is to support the exchange and sharing of product model data without the need to know the sending or receiving system. The first release of STEP as a Draft International Standard will occur in 1992. The capability of that release will provide a strong basis for system designers and integrators to develop STEP compliant products that can support a significant portion of the product definition data that is exchanged today between and within businesses.

A new implementation of OntoSTEP: Toward flexible generation of ontology and knowledge graphs of EXPRESS-driven data

2021 ◽  
pp. 1-8
Author(s):  
Soonjo Kwon ◽  
Laetitia Monnier ◽  
Raphael Barbau ◽  
William Bernstein
Keyword(s):  
Web Ontology Language ◽  
Model Data ◽  
Product Model ◽  
Ontology Language ◽  
Current Implementation ◽  
Knowledge Graphs ◽  
Iso 10303 ◽  
Flexible Generation ◽  
Representation Types ◽  
The Web

Abstract Barbau et al. (2012) proposed OntoSTEP that translates the STandard for the Exchange of Product Model Data (STEP) schema and its instances to an ontology and knowledge graphs represented in the Web Ontology Language (OWL). OntoSTEP models can be integrated with any OWL models to enrich their semantics. However, the current implementation has several limitations, mainly in (1) supporting the latest ISO 10303 schemas and (2) generating various representation types depending on the purpose of use. We present an improved implementation of OntoSTEP to overcome these limitations. In this paper, we demonstrate that the new implementation can successfully translate STEP schemas and instances in a faster and more flexible way, thus furthering the adoption of the full capabilities of ISO 10303. By encoding STEP entities in OWL, we facilitate integration with other standards through knowledge graphs.

The Implementation of STEP Schemas

1993 ◽  
Author(s):  
William C. Burkett
Keyword(s):  
Design Process ◽  
Development Process ◽  
Product Information ◽  
Database Design ◽  
Model Data ◽  
Product Model ◽  
Current Step ◽  
International Standard ◽  
Conflicting Objectives ◽  
Technical Architecture

Abstract The Standard for the Exchange of Product model data (STEP - ISO 10303) is an international standard for the communication of product information between heterogenous systems. In this presentation, the question of how STEP should be implemented is examined. The objectives of the STEP Development process are presented and the resulting effect that these objectives had on the structure of the standard is explained. However, conflicting objectives resulted in a structure that lacked appropriate mechanisms for dealing efficiently with implementation considerations. The STEP Development Process is compared/contrasted with a database design process to discern where implementation considerations (i.e., tuning, optimization) should take place within the process. A technical architecture for the standard is presented and a missing component of the standard is identified and explained: the Implementation Schema. Current STEP efforts with respect to Implementation Schemas are then presented.

PDQ (Product Data Quality): Representation of Data Quality for Product Data and Specifically for Shape Data

2010 ◽  
Vol 10 (2) ◽  
Author(s):  
Yoshihito Kikuchi ◽  
Hiroyuki Hiraoka ◽  
Akihiko Otaka ◽  
Fumiki Tanaka ◽  
Kazuya G. Kobayashi ◽  
...  
Keyword(s):  
Data Quality ◽  
Manufacturing Process ◽  
Point Of View ◽  
International Standard Organization ◽  
Quality Data ◽  
Model Data ◽  
Product Model ◽  
Product Data ◽  
Iso 10303 ◽  
Shape Data

In the communication and sharing of product data, if the difference of the required data quality and the data quality actually incorporated into data is significant, it causes various problems. It is often the case that a creator of low quality data does not realize it unless it is harmful for his job. In most cases, low quality data passed to subsequent processes, such as manufacturing process, cause problems since these are not appropriate from the machining precision point of view or the detailed shape modeling point of view. In these cases, rework or repair of data is necessitated before commencing the target process, which results in significant economy loss and delay of product development. Today’s product model data are dumb data because design intents and data quality incorporated are not explicitly represented. Receiving systems cannot know whether the data passed possess sufficient quality for the target job or not. Another problem is that engineers in later processes, such as the manufacturing process, cannot issue data quality related request beforehand in a commonly agreed manner. The problems mentioned above are caused by the lack of a commonly agreed representation of product data quality (PDQ) information. Our proposed solution is designed to enable the communication and sharing of data quality information. This paper reports the development of a PDQ standard (ISO 10303-59), which is a resource part of ISO 10303 Standard for the Exchange of Product Model Data (STEP) (2008, “ISO 10303-59, Industrial Automation Systems and Integration. Product Data Representation and Exchange. Part 59 Integrated Generic Resource: Quality of Product Shape Data,” International Standard Organization, Geneva). The objective of ISO 10303-59 is to establish a PDQ model and to enable the use of PDQ data independently or in combination with product data. The developed PDQ information model represents concepts such as data quality criteria, measurement requirements, and measured results. Based on the PDQ model, the PDQ for shape data model, which is a specialization of the PDQ model to 3D shape data quality, is also developed.

Development of STEP Ship Model Database and Translators for Data Exchange Between Shipyards

1997 ◽  
Vol 13 (02) ◽  
pp. 111-124
Author(s):  
Jeff Wyman ◽  
Dan Wooley ◽  
Burt Gischner ◽  
Joyce Howell
Keyword(s):  
Data Exchange ◽  
Transfer Mechanism ◽  
Model Data ◽  
Product Model ◽  
Global Marketplace ◽  
Shipbuilding Industry ◽  
International Standard ◽  
Ship Model ◽  
Model Database ◽  
Application Protocols

Effective data exchange of product model data is essential for future competition in the global marketplace. Many efforts have been undertaken in recent years to establish a transfer mechanism for product model data in the Shipbuilding industry. These include the development of the STEP Standard, creation of the NIDDESC Application Protocols, and efforts of the European NEUTRABAS and MARITIME Projects. The ARPA/MARITECH Project for "Development of STEP Ship Product Model Database and Translators for Data Exchange Between Shipyards" provides a unique opportunity to attempt to implement the still developing Standards for Product Model Exchange and to enable their use for data exchange between the major US Shipyards. The project will create and populate a prototype product model database, develop translators for exchange of product model data between Shipyards, and facilitate adoption of the Shipbuilding Application Protocols as part of the emerging International Standard (STEP). These ambitious goals are being undertaken by a consortium of US Shipbuilders, their CAD vendors, and STEP experts. The participants will help develop a product model data exchange capability for the entire Shipbuilding industry, while they enhance their own ability to compete in the global marketplace.

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