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基于DE算法的共轴直升机模型辨识及精度分析

刘鹏 蒙志君 武哲

刘鹏, 蒙志君, 武哲等 . 基于DE算法的共轴直升机模型辨识及精度分析[J]. 北京航空航天大学学报, 2012, (7): 971-975.
引用本文: 刘鹏, 蒙志君, 武哲等 . 基于DE算法的共轴直升机模型辨识及精度分析[J]. 北京航空航天大学学报, 2012, (7): 971-975.
Liu Peng, Meng Zhijun, Wu Zheet al. Coaxial helicopter model identification based on differential evolution algorithm and accuracy analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, (7): 971-975. (in Chinese)
Citation: Liu Peng, Meng Zhijun, Wu Zheet al. Coaxial helicopter model identification based on differential evolution algorithm and accuracy analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, (7): 971-975. (in Chinese)

基于DE算法的共轴直升机模型辨识及精度分析

基金项目: 国家自然科学基金资助项目(61074010)
详细信息
  • 中图分类号: V212.4

Coaxial helicopter model identification based on differential evolution algorithm and accuracy analysis

  • 摘要: 由于共轴直升机特有的旋翼布局引发了上下旋翼间强烈的气动干扰,采用传统的理论分析和风洞试验的方法难以获得适用于共轴直升机控制系统的飞行动力学模型.为此,设计了飞行扫频试验,根据飞行试验数据得到了悬停状态下包含共轴直升机飞行动力学模型耦合特性的非参数频率响应,运用仿生智能计算方法中的微分进化(DE,Differential Evolution)算法拟合频率响应建立了悬停状态下的共轴直升机状态空间模型.利用Cramer-Rao边界和不灵敏度的相关理论进行分析计算,说明辨识得到的参数具有较高的精度和可信度.通过比较辨识模型的输出和实际飞行数据的结果,说明辨识得到的模型能充分反映共轴直升机的飞行动力学特性,可用于飞行品质评估和飞控系统设计.

     

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出版历程
  • 收稿日期:  2011-04-22
  • 网络出版日期:  2012-07-30

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