基于工程规则的航空发动机管路敷设算法  

Engineering Rules-based Pipe Routing Algorithm for Aero-engines

作　　者：柳强[1,2] 王成恩[1,2] 白晓兰[1,2] 

机构地区：[1]东北大学辽宁省复杂装备多学科设计优化技术重点实验室,沈阳110819 [2]东北大学教育部流程工业综合自动化重点实验室,沈阳110819

出　　处：《机械工程学报》2011年第5期163-169,共7页Journal of Mechanical Engineering

基　　金：中国人民解放军总装备部预研重点基金资助项目(9140A18010207-LN0101)

摘　　要：复杂装备如航空发动机通常包含大量的对产品性能与可靠性有着重要影响的管线,管线敷设需要考虑空间限制与规则约束,手工敷设会导致反复修改且效率低下。提出一种基于工程规则的航空发动机管线自动敷设算法。该方法将航空发动机布管问题描述为求取满足一定规则的扫掠圆运动轨迹问题,采用柱坐标系对航空发动机的回转布管空间进行描述,构建轨道线框用于限定扫掠圆的运动轨迹。提出基于工程规则的布管算法引导扫掠圆接近目标,并提出障碍轮廓扩张法使得扫掠圆绕过形状复杂的管路附件。算法存储空间小、搜索速度快,且不局限于柱面或锥面,因此更具一般性。通过若干航空发动机管路敷设的数值算例,验证了算法的可行性与高效性。Complex equipment such as aero-engines,usually contain a good deal of pipes and cables which have important influence on product performance and reliability.Pipe routing has to consider space constraints and engineering rules,and manual routing usually results in repeated modifications.A pipe routing algorithm for automatic generation of pipe routes in a rotational space of an aero-engine is proposed.It formulates the aero-engine pipe routing problem as searching for a scanning circle＇s moving trajectories while meeting certain engineering rules.According to the routing space,the cylindrical coordinate system is adopted to describe the routing space,and trajectory framework is constructed to restrict the scanning circle＇s movements.Subsequently,an engineering rule-based pipe routing algorithm is developed to lead the scanning circle to targets,and an obstacle contour-expansion method is further proposed for the scanning circle to bypass obstacles.The algorithm requires less memory space and has fast search speed.And,it is more general since it is designed for the rotational spaces.Finally,numerical computations of pipe routing examples demonstrate the feasibility and efficiency of the algorithm.

关 键 词：航空发动机 管线 敷设 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程]