Vibration mode optimization method, vibration mode optimization device and unmanned aerial vehicle
An optimization method and vibration mode technology, applied in the field of drones, can solve problems that affect flight safety and normal imaging, instability, large motor quality, etc., to achieve the effect of ensuring flight safety and normal operation
Pending Publication Date: 2021-05-28
SZ DJI TECH CO LTD
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Problems solved by technology
The arm of the UAV is relatively long, and the mass of the motor at the end is relatively large. In addition to supporting the tripod, it also has other additional functions. When the man-machine is manoeuvrable and the blades are at high speed, the instability will occur, and the severe vibration of the arm will affect the flight safety and normal imaging.
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[0025] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, are only for explaining the present application, and should not be construed as limiting the present application.
[0026] In the description of the present application, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.
[00...
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A vibration mode optimization method is used for an unmanned aerial vehicle (100). The unmanned aerial vehicle (100) comprises a vehicle body (20) and a vehicle arm assembly (30), the vehicle arm assembly (30) comprises a vehicle arm (32) and a motor (34), one end of the vehicle arm (32) is rotatably connected with the vehicle body (20), the top of the other end of the vehicle arm (32) is connected with the motor (34), the bottom of the other end of the vehicle arm (32) is connected with a foot stool (40), and an output shaft of the motor (34) is connected with a paddle (50). The vibration mode optimization method comprises the following steps: acquiring a critical unstable paddle frequency (omega) of a paddle (50); adjusting at least one of a torsional frequency ([omega] x) of the arm (32), a distance (h) of a blade plane of the blade (50) to a torsional axis of the arm (32), and a moment of inertia (Mx) of the arm assembly (30) with respect to the torsional axis of the arm (32) as a function of a critical unstable blade frequency ([omega]) of the blade (50). The invention also discloses a vibration mode optimization device (200) and an unmanned aerial vehicle (100).
Description
technical field [0001] The present application relates to the technical field of unmanned aerial vehicles, in particular to a vibration mode optimization method, a vibration mode optimization device and an unmanned aerial vehicle. Background technique [0002] At present, for the portability of folding, most drones use folding blades. The arm of the UAV is relatively long, and the mass of the motor at the end is relatively large. In addition to supporting the tripod, it also has other additional functions. The instability of the man-machine and the high-speed rotation of the blades, and the severe vibration of the arm will affect the flight safety and normal imaging. Contents of the invention [0003] Embodiments of the present application provide a vibration mode optimization method, a vibration mode optimization device, and a drone. [0004] The vibration mode optimization method of the embodiment of the present application is used for an unmanned aerial vehicle. The u...
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IPC IPC(8): B64C27/51B64C27/54B64C27/08B64C27/32
CPCB64C27/51B64C27/54B64C27/08B64C27/32B64U10/10
Inventor 赵鹏飞刘祥
Owner SZ DJI TECH CO LTD