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论文:2014,Vol:32,Issue(5):682-687 |
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引用本文： |
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程鹏飞, 吴成富, 段晓军, 郭月. 机翼不对称损伤无人机在大侧滑角下的飞行动力学研究[J]. 西北工业大学 |
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Cheng Pengfei, Wu Chengfu, Duan Xiaojun, Guo Yue. Researching High Sideslip Angle Flight Dynamics of Wing-Damaged Asymmetric Aircraft[J]. Northwestern polytechnical university |
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| 机翼不对称损伤无人机在大侧滑角下的飞行动力学研究 |
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| 程鹏飞1, 吴成富1, 段晓军1, 郭月2 |
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1.西北工业人学无人机特种技术重点实验室, 陕西 西安 710065;
2.西北工业人学自动化学院, 陕西 西安 710072 |
| 摘要: |
| 对机翼损伤无人机的飞行动力学进行分析,重点分析左翼不同程度面积矩损伤对大侧滑飞行操稳特性的影响规律。首先给出重心偏移、新增转动惯量和耦合气动导数在不同程度损伤下的变化规律;其次通过损伤特征根对飞行运动模态的变化情况进行分析;接下来给出损伤对部分通道时域暂态响应的影响,以及如何改善操纵性的方法。最后通过频响分析总结出增强损伤机体辨识精度的途径。分析结果表明:随损伤程度增大,典型运动模态逐渐变化,特征根有规律移动;时域响应高频振荡成分减小,低频成分增大,稳态值逐渐增大直到发散;耦合通道的频响具有全部运动模态信息,能对损伤飞机的系统辨识提供额外信息。 |
| 关键词:
机翼损伤无人机
操稳特性
飞行动力学
频响分析
系统辨识
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| Researching High Sideslip Angle Flight Dynamics of Wing-Damaged Asymmetric Aircraft |
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| Cheng Pengfei1, Wu Chengfu1, Duan Xiaojun1, Guo Yue2 |
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1. Science and Technology on UAV Laboratory, Northwestern Polytechnical University, Xi'an 710065, China;
2. Department of Automatic Control, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| This paper presents an analysis on flight dynamics of wing-Dlamaged UAV,especially on the regularitythat damage of left wing in different grades influence stability and handling performance at high sideslip angle.First,the analysis shows the changes of mass point position,new moment of inertia coupled aero-derivatives due todamage.Then it analyzes the variations of motion modes using eigenvalues after damage.Next differences in thetime transient response of some control channels among varying degrees of damage are illustrated and the method forenhancing handling performance is also discussed.Finally the way through frequency domain analysis for improvingidentification precision of damaged plant is simply given.The results and their analysis show preliminarily that whendamaged area expands,all motion modes and corresponding eigenvalues are changed regularly.The components ofhigh and low frequency are increased and decreased respectively and steady-state values increase gradually until di-vergence.Signals of coupled channels in frequency response include information about all motion modes and pro-vide additional knowledge for the system identification of damaged plant. |
| Key words:
wing-damaged UAV
stability and handling performance
flight dynamics
frequency domain analysis
system identification
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| 收稿日期: 2014-04-01
修回日期:
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| DOI: |
| 通讯作者:
Email： |
| 作者简介: 程鹏飞(1986-)，西北工业大学博士研究生，主要从事飞行动力学及飞行控制研究。
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