基于观察坐标与混合包围盒的装配碰撞检测方法  

Assembly Collision Detection Method Based on Observation Coordinates and Hybrid Bounding Box

作　　者：卢江 钱德英 周伟中 周密[1] 徐仁桐 陈宁[1] LU Jiang;QIAN Deying;ZHOU Weizhong;ZHOU Mi;XU Rentong;CHEN Ning(School of Energy and Power Engineering,Jiangsu University of Science and Technology,Jiangsu Zhenjiang,212003,China;Hudong Heavy Machinery Co.,Ltd.,Shanghai 200129,China;Shanghai Ship Craft Research Institute,Shanghai 200032,China)

机构地区：[1]江苏科技大学能动学院,江苏镇江212003 [2]沪东重机有限公司,上海200129 [3]上海船舶工艺研究所,上海200032

出　　处：《船舶工程》2019年第9期12-16,51,共6页Ship Engineering

摘　　要：观察坐标系和碰撞检测是虚拟装配系统中的重要环节,观察坐标系的建立为用户提供更加真实的沉浸感和合理的观察位置,而精确的碰撞检测对提高装配仿真的精度和效率至关重要。文章利用四元数法设计以观察物体虚拟装配模型间干涉的鹰眼观察坐标系,建立系统中物体模型的对应关系函数,提出AABB和K-DOPs混合包围盒的碰撞检测方法,对相交的物体进行干涉检测和干涉剔除。将该方法应用于船用柴油机维护保障虚拟装配系统的开发中,仿真分析对比结果表明,该方法具有较好的精确性和实时性,能够满足虚拟装配系统开发中对沉浸感和碰撞检测的要求。Observing the coordinate system and collision detection is an important part of the virtual assembly system. The establishment of the observation coordinate system provides users with more realistic immersion and reasonable observation position, and the accurate collision detection is essential to improve the accuracy and efficiency of assembly simulation. In the paper, the quaternion method is used to observe the eagle-eye observation coordinate system of the interference between the virtual assembly models of objects, and the corresponding relationship function of the object model in the system is established. The collision detection method of AABB and K-DOPs hybrid bounding box is proposed. The object is subjected to interference detection and interference rejection. The method is applied to the development of marine diesel engine maintenance support virtual assembly system. The simulation analysis and comparison show that the method has good accuracy and real-time, and can meet the requirements of immersion and collision detection in the development of virtual assembly system.

关 键 词：观察坐标系 虚拟装配系统 混合包围盒 碰撞检测 

分 类 号：U664.121[交通运输工程—船舶及航道工程] TP391[交通运输工程—船舶与海洋工程]