Capturing design intent is a key problem in the process of product design. A forklift parametric design system based on capturing design intent is proposed and established, which provides the method for the transformation from capturing design intent to driving parametric model. The process is composed of three modules, including capturing intent, optimization and parametric driving. The intent database formed by intent units is obtained via decomposing the design intent. The design intent model is produced according to the combination of the units in the intent database and those in the product structure database. This model is further solved by optimization module and the main parameters in parametric design are thus obtained. Then the complete driving parameters are acquired by parameter estimation and flexible control, and the parametric model is therefore obtained. Finally, the example of a forklift design process provided to validate the system and its advantage is also demonstrated.%设计意图捕捉是产品设计过程的关键问题.为实现从设计意图捕捉到参数化图形驱动的过程,提出并实现了基于意图捕捉的叉车参数化设计系统.系统由意图捕捉、最优化求解和参数化驱动三个模块组成,通过对设计意图的分解,构建由意图单元组成的意图库,并映射到产品结构库,并经意图单元和结构单元结合形成设计意图模型；基于最优化模块的优化求解将设计意图模型转化为参数化设计的主参数,并通过参数估计和柔性控制,得出完整驱动参数,最终生成叉车三维参数化模型.最后,以叉车设计过程为例验证了系统的有效性.
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