Braking method of permanent-magnet synchronous motor and related equipment

Abstract

The invention discloses a braking method of a permanent-magnet synchronous motor. The method applied to an electronic speed regulator comprises: a brake control signal for indicating an electronic speed regulator to brake a permanent-magnet synchronous motor is received; a first brake signal is generated, wherein the first brake signal is used for indicating the permanent-magnet synchronous motor to reduce the rotational speed within preset braking time; the first brake signal is transmitted to the permanent-magnet synchronous motor; a second brake signal for instructing the permanent-magnet synchronous motor to stop rotation is generated when the preset braking time is completed; and the second brake signal is sent to the permanent-magnet synchronous motor. According to the synchronous braking unmanned aerial vehicle and the braking method thereof and the permanent-magnet synchronous motor assembly for realizing the same, the braking is divided into two stages; and when the motor rotation speed is reduced to be in a set range, a braking force for synchronous shutdown is applied again, so that rapid and consistent shutdown of multiple motors of the unmanned aerial vehicle can be realized.

Description

technical field [0001] The embodiments of the present invention relate to the field of unmanned aerial vehicles, in particular to a permanent magnet synchronous motor braking method and related equipment. Background technique [0002] Existing unmanned aerial vehicles generally need to use multiple motors and propellers to complete complex flights. Generally, when an unmanned aerial vehicle stops, multiple motors and propellers will stop slowly due to inertia, and because the positions of each motor and propeller are different, the resistance to air flow and other frictional resistances they suffer are different. It is impossible to ensure that multiple propellers stop at the same time under the condition of naked eye observation. Generally, the propellers stop one after another, which reduces the experience of using the drone. [0003] Because of the inability to shut down consistently, the difference in the wear of each motor will increase after long-term use, and there i...

AI Technical Summary

Problems solved by technology

[0002] Existing unmanned aerial vehicles generally need to use multiple motors and propellers to complete complex flights

Generally, when an unmanned aerial vehicle stops, multiple motors and propellers will stop slowly due to inertia, and because the positions of each motor and propeller are different, the resistance to air flow and other frictional resistances they suffer are different. It is impossible to ensure that multiple propellers stop at the same time under the condition of naked eye observation. Generally, the propellers stop one by one, which reduces the experience of using the drone.

[0003] Because of the inability to stop consistently, the difference in the wear of each motor will increase after long-term use, and there is a risk of disrupting the flight balance of the unmanned aerial vehicle

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