A Method of Conflict Resolution for Product Configuration
Date Issued
2011
Date
2011
Author(s)
Wu, Yu-Hsuan
Abstract
In the product design process, the design configuration step integrates objects and constraints that are defined in the early design stage. With increasing complexity, conflicts between design objects increase. As a result, research concerning techniques for resolving conflicts between design components is becoming more important. Most prior design methods only focus on design constraints. In this study, the relationships between design objects and different design environments are considered to produce better product design configurations.
In this study, Zeng''s axiomatic theories of design modeling and environment-based design problem formulation are used as a theoretical foundation to create a model for product configuration design. Creating the model consists of three steps：environment analysis, conflict identification, and concept generation. Environment analysis consists of determining the boundary of the design environment, characteristics of the environment, the design objects, and the relationships between the objects. Conflict identification involves organizing and examining relationships between objects and between the objects and the environment, to find conflicts. Finally, concept generation consists of completing trade-off analyses to eliminate conflicts and generate new design concepts.
In addition, this study introduces the concepts of object and object relationship importance measures. Object importance is defined as the sum of all object relationship importance measures between the object and all other objects. Object relationship importance measures are determined based upon potential and direct impacts. Potential impacts that relate to contact relationships between objects are evaluated using atomic theory. Direct impacts that relate to the product are evaluated by designers. Potential and direct impacts are incorporated into a Mamdani fuzzy model to determine object relationship importance measures. The resulting object and object relationship importance measures are used to resolve conflicts during configuration design.
A forklift system and a controller assembly are used as case studies to examine the object relationship importance measures that impact trade-off analyses. By resolving conflicts, the method successfully meets design requirements and creates new design configurations.
Subjects
axiomatic theory of design modeling
environment-based formulation of design problem
product configuration
conflict resolution
Type
thesis
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