基于图论的无人机传动系统构型设计

Configuration Design of Unmanned Rotorcraft Based on Graph Theory

传动系统作为无人机的核心系统,一定程度上决定了无人机的性能。针对传统传动系统设计效率低下的问题,本文提出基于图论的传动系统构型设计方法。首先,介绍传动系统图论表示、网络流、最小费用网络流等图论相关理论;其次,提出一种针对无人机传动系统的功率流建模方法,建立数字化模型,通过计算机自动化传动比分配,进行功率流分析,得到最优的传动系统构型方案;最后,以单发动机双旋翼传动系统为例,利用本文提出的最小费用网络流分析方法对传动系统进行构型分析,从而检验所提出方法的合理性和采用约束条件的正确性,为后续无人机传动系统的计算机自动化设计建立基础。

The transmission system as the core system of unmanned aerial vehicles,to a certain extent,determines the performance of the aircraft.In order to solve the problem of low efficiency of traditional transmission system design,this paper proposes a transmission system configuration design method based on graph theory.Firstly,the graph theory,including graph-theoretic representation of transmission system,the theory of network flow,and minimum cost network flow,are introduced.Secondly,we propose a method for power flow modeling of unmanned rotorcraft transmission system.A digital model is established through computer automated transmission ratio distribution.Power flow is analyzed and the optimal transmission system configuration scheme is obtained.Finally,taking a single dual-engine rotor drive system as an example,the drive system configuration analysis is carried out by using the proposed method of minimum cost network flow analysis to verify the rationality of the method proposed and the correctness of using constraints.It establishes the foundation for the computer automation design of the subsequent unmanned rotorcraft transmission system.