为了在虚拟环境下对复杂雷达结构进行装配过程仿真,验证雷达结构设计的合理性和适装性,提出了基于特征代理的虚拟装配方法。将虚拟零部件的几何约束信息用代理特征表示,用代理特征进行装配意图和装配约束识别。通过遍历代理特征集进行属性匹配,寻找存在装配关系的零件模型,将满足匹配条件的代理特征作用于装配件,通过运动定位求解,完成零部件的精确装配。该方法已应用于某大型相控阵雷达的虚拟装配仿真,实例表明它可以快速、精确地对雷达零部件进行装配引导和定位。

In order to simulate the assembly process of complex radar structures in virtual environment, and verify the rationality and assimilability of radar structure, a virtual assembly method based on feature proxy is presented. The geometry constraints of virtual models are replaced by a set of feature proxies. The feature proxy is used for the identification of geometry constraints and assembly relationship between assembly models. By matching the elements of feature proxy sets to find the features, the constraint relationship between assembly models are find out. The feature proxies satisfying the assembly requirements are applied to the assembled parts, and the precise assembly of a virtual model is conducted by motion calculation and position transformation. This algorithm has been applied to virtual assembly simulations of a large-scale phased array radar, and the experimental results demonstrate that this method provides a rapid and precise assembly guidance and positioning of radar parts.

TP391