基于粒子群算法的航空发动机管路布局方法

PSO-Based Pipe Routing Approach for Aircraft Engine

针对航空发动机的内机匣表面为近似柱面的特点,建立了布管模型坐标系,将三维布管问题简化为二维问题,以栅格法和粒子群算法为基础,提出了基于粒子群算法的航空发动机管路布局方法.该方法采用栅格法对环境进行建模,设计了一种基于栅格的定长度粒子编码机制以解决变长度编码的不足,建立了路径寻优的目标函数,应用粒子群算法在环境模型中搜索最优粒子.最后给出了仿真结果与UG视图,证明了该方法的可行性和有效性.

According to the characteristic of inside surface of aircraft engine, a coordinate system was framed for the pipe routing, by which the 3D space is reduced to be 2D space since the surface of the inner cabinet of aero engine is approximately a plane surface through expansion. A new method based on grid method and particle swarm optimization （PSO） is therefore proposed for pipe routing, where the grid theory is used to establish the free space model and a fixed-length encoding mechanism is designed instead of the variable-length one to overcome its shortcomings. And an objective function is given to optimize pipe routing, thus applying the PSO algorithm to searching optimum particles in the free space. With the simulation results and UG view provided, the feasibility and validity of the proposed method is verified.