Starting method and apparatus for permanent magnet synchronous motor, power system, and unmanned aerial vehicle

    公开(公告)号:US11005396B2

    公开(公告)日:2021-05-11

    申请号:US16567183

    申请日:2019-09-11

    Inventor: Yidong Chen

    Abstract: Implementations of the present application relate to a starting method and apparatus for a permanent magnet synchronous motor, a power system, and an unmanned aerial vehicle (UAV). The method includes: obtaining a current motor rotational speed and motor position information of the permanent magnet synchronous motor; determining whether the current motor rotational speed is less than a preset minimum rotational speed, and if the current motor rotational speed is less than the preset minimum rotational speed, using the preset minimum rotational speed as a feedback rotational speed; otherwise, using the current motor rotational speed as a feedback rotational speed; and performing closed-loop control on the permanent magnet synchronous motor according to the feedback rotational speed and the motor position information. In this way, the starting method is simplified and simpler. Potential failure risks in various states in the prior art are avoided, thereby effectively improving reliability of a starting process.

    Drone control method and device and drone

    公开(公告)号:US11501649B2

    公开(公告)日:2022-11-15

    申请号:US16665701

    申请日:2019-10-28

    Abstract: This application discloses a drone control method and device and a drone and pertains to the technical field of drone control. The method includes: monitoring a running status of each power motor in a drone; determining according to the running status of each power motor whether the drone is in a crashed state; and controlling the drone to alarm when determining that the drone is in the crashed state. The drone control method and device and the drone can rapidly locate a crashed drone, greatly increasing the probability of finding back the crashed drone.

    Method for braking permanent magnet synchronous motor and related device

    公开(公告)号:US11581831B2

    公开(公告)日:2023-02-14

    申请号:US16415470

    申请日:2019-05-17

    Abstract: The present disclosure discloses a method for braking a permanent magnet synchronous motor and a related device. The method is applied to an electronic speed controller and includes: receiving a signal for braking the permanent magnet synchronous motor sent by a flight controller; sending a first control signal to the permanent magnet synchronous motor, the first control signal being used to control the permanent magnet synchronous motor to decrease its rotational speed to a preset rotational speed range within a first preset time period; and after the first preset time period ends, sending a second control signal to the permanent magnet synchronous motor, the second control signal being used to control the permanent magnet synchronous motor to stop rotating within a second preset time period. According to the method, consistency of shutdown of multiple motors is ensured, and use experience of a drone is improved.

    Motor and motor fixing structure
    4.
    发明授权

    公开(公告)号:US11309768B2

    公开(公告)日:2022-04-19

    申请号:US16567188

    申请日:2019-09-11

    Abstract: The present disclosure provides a motor and a motor fixing structure. A first conductive terminal is disposed on the motor, a lead of the motor being electrically connected to an external device through the first conductive terminal, thereby simplifying a manner of connection. When the motor fails, it is only necessary to disconnect the electrical connection between the first conductive terminal and the external device, so that the motor can be rapidly detached without any auxiliary tool, thereby simplifying operations of detaching and mounting a motor and improving the efficiency of replacing a motor.

    Starting method and apparatus for permanent magnet synchronous motor, power system, and unmanned aerial vehicle

    公开(公告)号:US10447185B2

    公开(公告)日:2019-10-15

    申请号:US15883647

    申请日:2018-01-30

    Inventor: Yidong Chen

    Abstract: Implementations of the present application relate to a starting method and apparatus for a permanent magnet synchronous motor, a power system, and an unmanned aerial vehicle (UAV). The method includes: obtaining a current motor rotational speed and motor position information of the permanent magnet synchronous motor; determining whether the current motor rotational speed is less than a preset minimum rotational speed, and if the current motor rotational speed is less than the preset minimum rotational speed, using the preset minimum rotational speed as a feedback rotational speed; otherwise, using the current motor rotational speed as a feedback rotational speed; and performing closed-loop control on the permanent magnet synchronous motor according to the feedback rotational speed and the motor position information. In this way, the starting method is simplified and simpler. Potential failure risks in various states in the prior art are avoided, thereby effectively improving reliability of a starting process.

Patent Agency Ranking