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Integrated modeling of motion decoupling and flexure deformation of carrier in transfer alignment

机译：转移对准中载波运动去耦和弯曲变形的综合建模

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摘要

In airborne distributed inertial measurement system, there are complex working environment and obvious structural deformation regards to the carrier, which make the research of transfer alignment technology more complicated. Considering the influence of dynamic deflection and coupled motion, the integrated transfer alignment model of decoupled and flexed deformation is established in the paper, which is based on the requirement of high precision navigation information at the sub antenna of airborne earth observation system. On the one hand, combined with Fiber Bragg Grating (FBG) sensor to measure the deflection of the aircraft wing, a general deflection model of the aircraft wing is established, and the accuracy of the model is verified by finite element analysis. On the other hand, the traditional airborne transfer alignment regards the motion of the carrier and the dynamic deformation of the carrier as uncorrelated motion, but there is a strong coupling between them in practice. In the paper, based on the geometric relationship between them, the coupling is solved, and the system error equation is updated. The feasibility and accuracy of the proposed transfer alignment model are verified by semi physical simulation experiments. The results show that the proposed model is faster and more accurate than the traditional transfer alignment model.
机译：在空中分布式惯性测量系统中，有复杂的工作环境和明显的结构变形至关重要，这使得转移对准技术的研究更加复杂。考虑到动态偏转和耦合运动的影响，在纸张中建立了解耦和弯曲变形的集成转移对准模型，其基于空中地球观测系统的子天线处的高精度导航信息的要求。一方面，结合光纤布拉格光栅（FBG）传感器来测量飞机机翼的偏转，建立了飞机机翼的一般偏转模型，通过有限元分析验证了模型的准确性。另一方面，传统的空气传输对准至关载体的运动和载体的动态变形作为不相关的运动，但在实践中它们之间存在强烈的耦合。在本文中，基于它们之间的几何关系，解决了耦合，并且更新了系统误差方程。通过半物理仿真实验验证了所提出的转移对准模型的可行性和准确性。结果表明，该模型比传统的转移对准模型更快，更准确。

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  • 来源
    《Mechanical systems and signal processing》 |2021年第10期|107690.1-107690.17|共17页
  • 作者

    Xiyuan Chen; Zhen Ma; Ping Yang;

  • 作者单位

    Key Laboratory of Micro-lnertial Instrument and Advanced Navigation Technology Ministry of Education School of Instrument Science and Engineering Southeast University China;

    Key Laboratory of Micro-lnertial Instrument and Advanced Navigation Technology Ministry of Education School of Instrument Science and Engineering Southeast University China;

    Key Laboratory of Micro-lnertial Instrument and Advanced Navigation Technology Ministry of Education School of Instrument Science and Engineering Southeast University China;

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  • 正文语种 eng
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  • 关键词

    Airborne; Transfer Alignment; Dynamic Deformation; Lever Arm Compensation;

    机译：空降;转移对齐;动态变形;杠杆臂赔偿;

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