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基于纵向小扰动运动方程的飞行系统数值模拟研究 被引量:1
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作者 王立文 郑宇 唐华 《液压与气动》 北大核心 2009年第6期35-37,共3页
飞行系统仿真是飞行模拟器仿真的重要组成部分。飞行系统数学模型中常用的运动方程模型为小扰动模型。在小扰动模型下,飞机运动分为短周期运动和长周期运动。介绍小扰动方程并且分析了小扰动模型下升降舵偏转后引起的过渡过程,通过对飞... 飞行系统仿真是飞行模拟器仿真的重要组成部分。飞行系统数学模型中常用的运动方程模型为小扰动模型。在小扰动模型下,飞机运动分为短周期运动和长周期运动。介绍小扰动方程并且分析了小扰动模型下升降舵偏转后引起的过渡过程,通过对飞机进行定直平飞无操纵小扰动情况下的仿真,证明短周期模态主要是Δα和Δ的变化,而长周期模态主要对应ΔV的变化。 展开更多
关键词 飞机小扰动微分方程 飞行系统仿真 飞行过渡过程 短周期运动 长周期运动
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Transition Stage Control of Tail Sitter Aircraft Based on Guardian Maps
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作者 ZHANG Yong CHEN Xinyi 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2020年第2期322-331,共10页
To deal with the high nonlinearities and strong couplings in the transition stage of tailsitter aircraft,an adaptive gainscheduling controller is proposed by combining the guardian maps theory and H∞control theory.Th... To deal with the high nonlinearities and strong couplings in the transition stage of tailsitter aircraft,an adaptive gainscheduling controller is proposed by combining the guardian maps theory and H∞control theory.This method is applied to track the flightpath angle of the transition stage of tailsitter aircraft,and compared with the linear quadratic regulator(LQR)method based on traditional gain scheduling.Simulation results show that the controller based on the guardian maps theory can autonomously schedule the appropriate control parameters and accomplish the stable transition.Besides,the proposed method shows better tracking performance than the LQR method based on traditional gain scheduling. 展开更多
关键词 tailsitter aircraft transition stage guardian maps adaptive gainscheduling controller
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