Enforcing model validity by automatic adjustment

作     者：Noort, Alex Bronsvoort, Willem F. 

作者机构：Computer Graphics and CAD/CAM Group Faculty of Information Technology and Systems Delft University of Technology Delft 2628 CD Mekelweg 4 Netherlands 

出 版 物：《Journal of Computing and Information Science in Engineering》 (J. Comput. Inf. Sci. Eng.)

年 卷 期：2001年第1卷第4期

页      面：311-319页

学科分类：0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0802[工学-机械工程] 0835[工学-软件工程] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：constraint theory design engineering Dimensions Design Modeling Shapes Algebra solid modelling 

摘      要：In current modeling systems, all dimensions in a model have to be fully specified by the user. It is desirable that systems become more flexible in this respect, i.e. that non-critical dimensions in a model can be declared variant, and that the model can be automatically adjusted to enforce its validity when it is invalid. A method to realize this in feature modeling systems is described. The underlying feature model definition and validation approach are introduced. Validation is done by a collection of constraint solvers. An overview of invalid situations in which automatic model adjustment can be applied is given. The constraint solving scheme and, in particular, the automatic model adjustment strategies for different types of constraints are elaborated. Applications to enforce model validity are given for the areas of design by features, creating a member of a family of products, and feature conversion. These illustrate that automatic model adjustment is a very useful concept. © 2001 by ASME.