公差分析技术在雷达天线设计中的应用

零部件的设计精度对产品的性能和技术指标均会产生较大的影响。文中简述了公差分析方法及Pearson分布的确定原理，而后通过雷达天线的公差分析，展示了公差分析技术在数字样机环境下的应用。在CAD设计模型的基础上，进行了特征生成及公差分配，建立了装配树，确定了公差操作与测量，从而构建了公差分析模型。最后分析了公差分析模型的仿真结果，对零部件设计参数对产品最终性能参数的影响进行了预测。

Application of Tolerance Analysis Technology in Radar Antenna Design

Design parameters of parts can greatly impact the product performance. The method of tolerance analysis and the definition of Pearson contribution were briefly related, and then through the tolerance analysis of radar antenna, the tolerance analysis technology under environment of digital prototype is shown. On the basis of CAD Model, the tolerance analysis model, by creating features, assigning tolerances, constructing assembling tree and defining tolerance operation and measurement, was built. The simulating results of tolerance model are analyzed, assessing the impact of design parameters to final performance of product.