基于ADRC的四旋翼抗复合风场干扰悬停性能研究
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西安工业大学

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TP3

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Research on hovering performance of quadrotor anti-composite Wind field disturbance based on ADRC
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    摘要:

    针对风场对四旋翼产生扰动导致控制器控制精度下降的问题,设计了一种应用于四旋翼悬停的控制器。利用牛顿-欧拉方程建立四旋翼无人机动力学模型,分析侧风对旋翼升力及扭矩的影响。通过仿真搭建四种基本风场模型及三维均匀复合风场模型。设计出一种基于自抗扰控制(Active Disturbance Rejection Control (ADRC))的控制器,利用扩张状态测器对四旋翼所受的总扰动进行估计,并通过非线性误差反馈律对总扰动进行抑制。引入速度映射模块,增强位置控制精度和姿态角跟踪精度。仿真结果表明,该算法能有效的提升四旋翼在风场下悬停时的姿态稳定性和位置精度。

    Abstract:

    The problem of the control accuracy of the controller caused by the disturbance of the quadrotor caused by the wind field is studied. A controller for quadrotor hovering is designed. The dynamic model of drone is established by using Newton-Euler equation, and the influence on lift and torque of rotor is analyzed by cross wind. Four basic wind field models and a three-dimensional uniform composite wind field model were built by simulation. Finally, design a controller based ADRC which can estimate the total disturbance of quadrotor by extended state observer, and then suppress the total disturbance by nonlinear state error feedback. The speed mapping module is introduced to enhance the position control accuracy and the attitude angle tracking accuracy of the controller. The simulation results show that the proposed algorithm effectively improves the attitude stability and position accuracy of the drone in the wind field.

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  • 收稿日期:2019-07-26
  • 最后修改日期:2019-10-21
  • 录用日期:2019-10-23
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