The Analysis of Research Status for Based-Constraint Parametric Design
基于约束参数化的设计技术研究现状分析

The analysis of research status for based-constraint parametric design is given. This article gives main limitations for early CAD system firstly, then reviews the development process of parametric design by main features in different phases. Parametric design methods are divided into program parametric design, on-line alternating parametric design and off-line parametric design. The principles and features are given for primary method, variational geometry method, artificial intelligence method and constructional process method, in the same time, some representative methods, such as geometry reasoning based on knowledge, constraint promulgation based on freedom analytical, are introduced in artificial intelligence method. Main processes and features for off-line parametric design are given. In the end, the article analyzes the current research situation, problems in different parametric methods and research direction in the future work.