大型多旋翼设计:空气动力学精确建模及旋翼倾斜角优化

IF 4.4 2区 地球科学 Q1 REMOTE SENSING Drones Pub Date : 2023-09-29 DOI:10.3390/drones7100614
Anhuan Xie, Xufei Yan, Weisheng Liang, Shiqiang Zhu, Zheng Chen
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引用次数: 0

摘要

空中机动(AAM)的进步是由运输、物流、救援和救灾需求驱动的。因此,功率大、空间大的大型多旋翼无人机显示出巨大的发展潜力。为了优化大型多旋翼的设计过程,减少物理试错,首先建立了详细的动力学模型,并建立了精确的气动模型。此外,还考虑了在小型多转子中通常被忽略的重心偏移和作动器动力学。为了提高大型多旋翼在实际应用中的耐久性和机动性,在建立数学模型的基础上,提出了一种双环转子倾斜角优化设计方法。其内环求解动力平衡点,从而缓解了整体优化问题中空气动力学带来的复杂动力约束,提高了求解效率。通过离线过程可以获得理想的设计结果,大大降低了物理试错的难度。最后,通过实验验证了所建立模型的准确性和优化方法的有效性。
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Large-Sized Multirotor Design: Accurate Modeling with Aerodynamics and Optimization for Rotor Tilt Angle
Advancements in aerial mobility (AAM) are driven by needs in transportation, logistics, rescue, and disaster relief. Consequently, large-sized multirotor unmanned aerial vehicles (UAVs) with strong power and ample space show great potential. In order to optimize the design process for large-sized multirotors and reduce physical trial and error, a detailed dynamic model is firstly established, with an accurate aerodynamic model. In addition, the center of gravity (CoG) offset and actuator dynamics are also well considered, which are usually ignored in small-sized multirotors. To improve the endurance and maneuverability of large-sized multirotors, which is the key concern in real applications, a two-loop optimization method for rotor tilt angle design is proposed based on the mathematical model established previously. Its inner loop solves the dynamic equilibrium points to relax the complex dynamic constraints caused by aerodynamics in the overall optimization problem, which improves the solution efficiency. The ideal design results can be obtained through the offline process, which greatly reduces the difficulties of physical trial and error. Finally, various experiments are carried out to demonstrate the accuracy of the established model and the effectiveness of the optimization method.
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来源期刊
Drones
Drones Engineering-Aerospace Engineering
CiteScore
5.60
自引率
18.80%
发文量
331
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