平流层验证飞艇的建模与分析

描述了工作于平流层中的一类轻于空气(LTA)的飞艇运动及受力情况。在以体积中心为原点的机体坐标系中,建立了完整的六自由度非线性模型。在此基础上,采用小扰动方法将原始的非线性微分方程线性化,并将线性化后的方程分为纵向和横侧向两组。结合实验数据对飞艇纵向运动的开环响应进行仿真,结果表明,只有将舵面控制与发动机转速控制相结合才能达到良好的控制效果。

Stratospheric Verifying Airship Modeling and Analysis

Airships have wide applications in the fields of transportation, observation and telecommunication services, and LTA (Lighter than air) airship can also be used for the stratospheric platform. A comprehensive description of the physical principles of an LTA airship was provided. A six degree of freedom (DOF) nonlinear dynamic model of the airship was presented based on the body axes coordinate system with the origin at the center of the volume. Then, the nonlinear equation of motion(EOM) is linearized on the condition of little perturbation, and divided into longitudinal and lateral equations. Finally, the open loop response of the airship longitudinal motion was simulated.