The invention discloses a variable-pitch device for an unmanned aerial vehicle, a variable-pitch control method and the unmanned aerial vehicle. The variable-pitch device comprises a driver, a fixed ring, a rotating ring and a variable-pitch pull rod. The driver comprises a first linear motor and a second linear motor; the fixing ring sleeves a propeller rotating shaft and is in spherical hinge connection with the propeller rotating shaft; a first connecting support, a second connecting support and a third connecting support are arranged on the fixing ring; the first linear motor is connectedbetween the first connecting support and a rack; the second linear motor is connected between the second connecting support and the rack; the third connecting support is in sliding fit with the rack;the rotating ring is arranged on the fixing ring in a fixed-axis rotating mode in a sleeving mode. The variable-pitch pull rod is used for connecting a propeller hub and the rotating ring. According to the variable-pitch device, periodic pitch changing can be achieved only by controlling push rods of the two linear motors to stretch out and draw back, the driving mode and the control logic are greatly simplified, meanwhile, the influence of the environment wind direction can be reduced through periodic pitch changing, and the pitch changing stability is greatly improved.
本发明公开了一种用于无人机的变距装置、变距控制方法及无人机,包括驱动器、固定环、旋转环和变距拉杆;驱动器包括第一直线电机和第二直线电机;固定环套设在螺旋桨转轴上且与螺旋桨转轴球铰连接;固定环上设置有第一连接支座、第二连接支座和第三连接支座;第一直线电机连接于第一连接支座与机架之间;第二直线电机连接于第二连接支座与机架之间;第三连接支座与机架滑动配合;旋转环以定轴转动的方式套设在固定环上;变距拉杆用于连接桨毂和旋转环。该变距装置仅需控制两个直线电机的推杆伸缩即可实现周期性变距,驱动方式和控制逻辑得到大幅的简化,同时周期性变距能够降低环境风向的影响,大大提升变距的稳定性。
Variable-pitch device for unmanned aerial vehicle, variable-pitch control method and unmanned aerial vehicle
一种用于无人机的变距装置、变距控制方法及无人机
2021-01-05
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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