A Hierarchical Category Model for Geometrical Product Specifications (GPS)

Geometrical product specifications - model for product life cycle

As technology increases and performance requirements continually tighten, the cost and required precision of assemblies increase as well. There exists a strong need for increased attention to tolerance design to enable high-precision assemblies to be manufactured at lower cost. For automotive and aircraft industries, the tolerancing process has become an important issue in product and process d...

A Discrete Geometry Framework for Geometrical Product Specifications

GeoSpelling as the basis of the Geometrical Product Specifications (GPS) standard [1] enables a comprehensive modeling framework and an unambiguous language to describe geometrical variations during the overall product life cycle. This is accomplished by providing a set of concepts and operations based on the fundamental concept of the “Skin Model”. However, the definition of GeoSpelling has no...

Estimating Primary Demand for a Heterogeneous- Groups Product Category under Hierarchical Consumer Choice Model

The exploration of a category theory-based virtual geometrical product specification system for design and manufacturing

ions such as inheritance are more naturally represented by graphs than as sets (Levene and Poulovassilis, 1991 [33]; Poulovassilis and Levene, 1994 [34]). (4) Data modellings in object-relational DBMSs still have weaknesses in semantic supports. For example, because the functional data model is the “lowest common denominator” of data models (refer to Section 2.2.3.1), there is lack of semantic ...

Developing a knowledge-based system for complex geometrical product specification (GPS) data manipulation

Geometrical product specification and verification (GPS) matrix system is a universal tool for expressing geometrical requirements on product design drawings. It benefits product designers through providing detailed description of functional requirements for geometrical products, and through referring to corresponding manufacturing and verification processes. In order to overcome current implem...