公开(公告)号：US11584235B2

公开(公告)日：2023-02-21

申请号：US16727272

申请日：2019-12-26

Applicant: Autel Robotics Co., Ltd.

Inventor： Shizhi Yan

IPC: B60L15/20 ,  B64C39/02

Abstract: The present application relates to an accelerator control method and device, a power system and an unmanned aerial vehicle (UAV). The method includes: receiving, by an electronic speed control (ESC), an accelerator signal through a serial communication interface; extracting accelerator control data from the accelerator signal; generating, according to the accelerator control data, a motor control signal for controlling operation of a motor; and transmitting the motor control signal to the motor. The accelerator signal received through the serial communication interface is a digital signal subjected to small interference during transmission, unlike an analog signal that is susceptible to interference such as impedance and capacitive reactance, which causes data inaccuracy. In addition, in the manner of serial communication, a higher baud rate may be adopted to shorten an accelerator control cycle, thereby achieving high-speed control of an accelerator and increasing the control frequency.

公开(公告)号：US11581831B2

公开(公告)日：2023-02-14

申请号：US16415470

申请日：2019-05-17

Applicant: AUTEL ROBOTICS CO., LTD.

Inventor： Shizhi Yan ,  Yidong Chen

IPC: H02P3/14 ,  H02P3/18 ,  H02P6/24 ,  H02P5/74 ,  B64D31/12

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.