The knowledge of the variant design process according to the characteristics of variant design was classified and the sub-knowledge bases consisting of knowledge instances were built. The concept of knowledge instances consisting of knowledge elements related to the variant design process was proposed, and the method for establishing common knowledge base of variant design was put forward. Last, an application example shows that the proposed method is validate.

variant design, knowledge element, knowledge base, requirement driven

根据变型设计特点对变型设计过程相关知识进行划分，提出了由与变型设计步骤相关的知识元组成的知识实例的概念,以及与变型设计过程紧密结合的通用性变型设计知识库的构建方法。针对每种类型的知识建立由知识元组成的子知识库和知识库。最后，以应用实例验证了本文方法的有效性。

变型设计, 知识元, 知识库, 需求驱动