平流层演示验证飞艇实时仿真平台设计

摘要

在平流层飞艇的设计和研究中,飞行仿真可以有效验证飞艇的动力学模型、控制器设计,检验飞艇的操纵性、飞行稳定性.同时,实时仿真技术可以提高飞艇性能,缩短研制周期.为解决上述问题,提出通过搭建飞艇的实时仿真平台,实现飞行仿真和实时仿真技术的统一.针对上海交通大学“致远一号”平流层演示验证飞艇,使用xPC target搭建了飞艇的实时仿真平台,完成了利用Simulink软件的动力学建模和控制系统设计,同时利用Flightgear飞行模拟器为仿真系统设计开发了视景仿真系统.进行仿真的结果显示,系统较好的实现了飞艇从上升到返回全过程飞行任务,视景系统直观准确地显示了飞艇在仿真过程中的状态变化,并可以为后续研究工作提供了依据.%For design and research of stratospheric airship,flight simulation can effectively assist dynamic model construction,controller design,and verify controllability and flight stability.Meanwhile,the real-time simulation technology can improve the quality of airship hardware development,and shorten the development cycle.Through constructing real-time simulation platform,the flight simulation and real-time simulation technology can be united.Based on ‘ZY-01" stratospheric demonstration airship from Shanghai Jiao Tong University,xPC target was used to build the airship real-time simulation platform and a simulink-based dynamic modeling was completed.Also,a widely used flight simulator Flightgear was applied to the development of visual simulation systems.The simulation results show that this system can intuitively and correctly fulfill the tasks such as maintaining desired speed and trajectory tracking,and the visualization system clearly reflect the state change of the airship under simulation.As a result,this platform can be used as an important tool during the follow-up researches.