期刊文献+

基于神经网络的零射程线闭路制导方法

Zero-range Orientation Closed-loop Guidance Method Based on Neural Network
下载PDF
导出
摘要 对于固体发动机飞行器,在动力飞行段一般采用能量匹配闭路制导或者倾角约束的闭路制导方法,这种闭路制导方法的控制精度较高,但其精度受到发动机性能偏差的影响较大,为了减小发动机性能偏差对制导精度的影响,提出了基于神经网络的零射程线闭路制导方法。首先,建立了飞行器动力飞行段运动模型,对零射程线闭路制导进行了分析推导;其次,设计了多输入神经网络算法,确定了输入输出参数,对剩余能量、待增速度以及趋零射程线角度进行训练,将神经网络训练结果与零射程线闭路制导相结合,使得在不同的发动机偏差情况下,反馈不同的趋零射程线角度;最后,通过选择不同的偏差状态进行仿真验证,仿真结果表明该方法能有效地减小发动机偏差对制导精度的影响,具有较强的抗偏差能力,制导精度高。 For solid-engine aircraft,closed-loop guidance methods with energy matching or angle constraints are generally used in the powered flight segment,which have high control accuracy.However,its accuracy is greatly affected by engine performance deviations.Therefore,a zero-range Orientation closed-loop guidance method based on neural network is proposed to reduce the impact of engine performance deviation on the guidance accuracy.Firstly,the motion model of the powered flight segment of the aircraft is established,and the closed-loop guidance of the zero-range Orientation is analyzed and deduced.Secondly,a multi-input neural network algorithm is designed,the input and output parameters are determined,the residual energy,the velocityto be increased and the angle of the zero-range Orientation are trained.Then,the training results of the above neural network with the zero-range Orientation closedloop guidance are combined.This method enables feedback of different zero-range Orientation angles under different engine deviations.Finally,different deviation states for simulation verification are chosen.The simulation results show that this method can effectively reduce the influence of engine deviation on the guidance accuracy,and has strong anti-bias ability and high guidance accuracy.
作者 刘运鹏 施健峰 刘旭东 王长江 李华滨 LIU Yunpeng;SHI Jianfeng;LIU Xudong;WANG Changjiang;LI Huabin(Beijing Aerospace Automatic Control Institute,Beijing,100854;Unit 96901,Beijing,100094;China Academy of Launch Vehicle Technology,Beijing,100076)
出处 《导弹与航天运载技术(中英文)》 CSCD 北大核心 2024年第4期52-56,共5页 Missiles and Space Vehicles
关键词 零射程线 固体发动机 神经网络 闭路制导 zero-range orientation solid motor neural network closed-loop guidance
  • 引文网络
  • 相关文献

参考文献6

二级参考文献47

共引文献27

;
使用帮助 返回顶部