基于仿真的无人机设计

Simulation Based Design of Unmanned Aerial Vehicle

随着计算能力的增强,各种仿真工具广泛应用于飞行器的概念设计。本文为固定翼无人机提出了一个基于仿真的包括气动、飞行动力学与控制的设计过程。它采用CFD进行气动特性分析和流场模拟,六自由度运动方程进行无人机数学建模,多目标遗传算法进行控制器优化设计。通过开环无人机运动分析和非线性闭环数学仿真实现对无人机气动布局和飞行控制系统的协同设计,并为飞行稳定性与控制问题提出解决方案。

With inreasing computational ablity, various simulation tools have been used extensively for the design of various flight vehicles in conceptual phase. This paper proposed a simulation based design process encompassing aerodynamics, flight dynamics and control for fixed wing Unmanned Aerial Vehicles （UAVs）. The authors used CFD to calculate aerodynamics and simulate flow-field, six degree of freedom （DoF） equation to model the UAV, and multi-objective genetic algorithm（MOGA） to design multi-loop simultaneously. Open loop linear simulation and closed loop nonlinear digital simulation is performed respectively to evaluate the aerodynamic configuration and flight control systems of the UAV, and solutions for the flight stability and control problems are proposed via this simulation.