Over-current protection method, device and system, and unmanned aerial vehicle

An overcurrent protection and current technology, applied in the field of unmanned aerial vehicles, can solve problems such as motor burnout, motor stall, and improper operation of unmanned aerial vehicle users, and achieve the effect of avoiding burnout

Active Publication Date: 2019-05-10
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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  • Abstract
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Problems solved by technology

[0003] During the use of existing unmanned aerial vehicles, due to the design problems of the unmanned aerial vehicle itself or improper operation by the user, sometimes the unm

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  • Over-current protection method, device and system, and unmanned aerial vehicle
  • Over-current protection method, device and system, and unmanned aerial vehicle
  • Over-current protection method, device and system, and unmanned aerial vehicle

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] It should be noted that, if there is no conflict, various features in the embodiments of the present invention may be combined with each other, and all of them are within the protection scope of the present invention. In addition, although the functional modules are divided in the schematic diagram of the device, and the logical order is shown in the flowchart, in some cases, the division of modules in the device or the sequence shown in the flowchart can be performed in different ways. or the steps described. Furthermore, words such as "first" and "second" used in the present invention do ...

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Abstract

Embodiments of the invention relate to the technical field of motor control, and disclose an over-current protection method, device and system, and an unmanned aerial vehicle. The over-current protection method comprises the following steps: acquiring a present throttle of the motor and a present current corresponding to the present throttle; generating a preset throttle current curve; determininga threshold range of the present current according to the present throttle and the preset throttle current curve; if the value of the present current exceeds the threshold range of the present current, determining that the motor is in an abnormal state; and if the motor is in an abnormal state for more than a preset time threshold, performing over-current protection. In the above manner, the invention can perform over-current protection when the motor is stalled, thereby preventing the motor from being burnt.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of motor control, in particular to an overcurrent protection method, device, system and unmanned aerial vehicle. Background technique [0002] With the development of unmanned aerial vehicle technology, unmanned aerial vehicles have been widely used in military and civilian fields. An unmanned aerial vehicle usually includes a plurality of blades, and the rotation of the plurality of blades is used to generate upward lift and forward power, and the power for the rotation of the blades is usually provided by a motor connected to the blades. [0003] During the use of the existing UAV, due to the design problem of the UAV itself or improper operation by the user, sometimes the UAV will roll over. If the motor is still rotating when the UAV rolls over, the motor Stalled rotor can easily cause the motor to burn out. Contents of the invention [0004] The purpose of the embodiments of th...

Claims

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Application Information

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IPC IPC(8): H02H7/085
CPCH02H7/085
Inventor 陈毅东
Owner SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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