基于STUKF的激光平台导引头干扰力矩在线补偿方法研究

发布时间：2018-04-15 21:41

本文选题：激光平台导引头 + 干扰力矩　；参考：《红外与激光工程》2016年12期

【摘要】：隔离度会降低导引头输出信息的精度,增加导弹的脱靶量。针对激光平台导引头的隔离度问题,首先建立了考虑隔离度寄生回路的制导系统模型,经分析确定干扰力矩为引发隔离度的主要原因,并提出采用滤波算法对其进行估计补偿的方案。之后依据平台导引头的基本结构与干扰力矩的产生机理建立了用于在线辨识隔离度的非线性滤波模型,采用强跟踪无迹卡尔曼滤波算法(STUKF)补偿建模误差,解决了干扰力矩难以精确建模的问题,以对其进行在线辨识与前馈补偿。最后对所提方法进行了数学仿真与半实物仿真实验论证,实验结果表明:所提方法可增强导引头光轴对弹目视线角速度的跟踪能力,改善导引头输出制导信息的品质,并有效地抑制隔离度,达到提升系统制导精度的目的。
[Abstract]:Isolation will reduce the precision of the seeker's output information and increase the miss distance of the missile.Aiming at the isolation degree of laser platform seeker, a guidance system model considering isolation parasitic loop is established.A scheme of estimation and compensation by filtering algorithm is proposed.Then, according to the basic structure of platform seeker and the mechanism of disturbance moment generation, a nonlinear filtering model for on-line isolation identification is established, and the strong tracking unscented Kalman filter algorithm is used to compensate the modeling error.The problem of accurate modeling of disturbance torque is solved for on-line identification and feedforward compensation.Finally, the mathematical simulation and hardware-in-the-loop simulation experiments are carried out to demonstrate the proposed method. The experimental results show that the proposed method can enhance the tracking ability of the optical axis of the seeker to the angular velocity of sight of the projectile and improve the quality of the guidance information output from the seeker.The isolation degree is effectively suppressed to improve the guidance accuracy of the system.
【作者单位】：北京理工大学宇航学院;
【基金】：国家自然科学基金(61172182)
【分类号】：TJ765.332

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