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Vibration suppression design of quadcopter drone with parameter tracking robust observer |
WANG Zhihao1, WEN Xinyu1, CAO Songyin2, ZHOU Liangliang3 |
1. School of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
2. College of Information Engineering, Yangzhou University, Yangzhou 225127, China;
3. Taiyuan Heavy Industry Co., Ltd., Taiyuan 030024, China |
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Abstract The parameter tracking robust observer design method is proposed for a class of quadrotor UAV subject to vibration. Firstly, the auxiliary filter is constructed to excite the vibration properties. Meanwhile, filter parameters are adjusted to reject the adverse effect of noise acting on the auxiliary state variables. The active vibration suppression can be simplified to the constant parameter estimation problem, which avoids the coupling of the estimated values and the operation of redundant parameters. Then a cascade structure of frequency parameter observer and tracker is designed to accurately estimate the vibration information. According to the above analysis, the compensation signal is reconstructed by auxiliary variables and frequency parameters. As a result, satisfactory vibration suppression performance can be achieved in combination with the controller. The designed observer has strong robustness without the phase lag caused by the time varying signal, which is often occurred in the conventional tracker. Finally, the performance of the system is demonstrated using the Lyapunov theorem, and the simulations are used to illustrate the effectiveness of the proposed method.
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Received: 11 May 2023
Published: 15 May 2024
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