Control method for driving motor rotation, electronic governor, power system, and unmanned aerial vehicle

Patent metadata

Field	Value
Publication number	US-11101753-B2
Application number	US-201916654838-A
Country	US
Kind code	B2
Filing date	Oct 16, 2019
Priority date	Apr 25, 2017
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A method for controlling a motor includes obtaining addressing information of an electronic speed governor coupled to the motor, determining a rotation direction of the motor based on the addressing information, and providing a drive signal to the motor according to the rotation direction.

First claim

What is claimed is:

1. A method for controlling a motor comprising:
obtaining addressing information of an electronic speed governor coupled to the motor;
determining a rotation direction of the motor based on the addressing information; and
providing a drive signal to the motor according to the rotation direction.

2. The method of claim 1 , wherein determining the rotation direction of the motor includes determining the rotation direction based on a preset correspondence between the addressing information and the rotation direction of the motor.

3. The method of claim 1 , wherein determining the rotation direction of the motor includes determining the rotation direction based on a calculation according to the addressing information.

4. The method of claim 1 , wherein obtaining the addressing information includes:
obtaining an addressing signal sent by an external controller; and
determining the addressing information according to the addressing signal.

5. The method of claim 4 , wherein the addressing signal includes a Pulse Width Modulation (PWM) signal.

6. The method of claim 1 , wherein obtaining the addressing information includes:
obtaining voltage information of an analog input port; and
determining the addressing information according to the voltage information.

7. The method of claim 6 , wherein obtaining the voltage information of the analog input port includes detecting, via the analog input port, a voltage value across a resistor connected in series with a communication link between the controller and the external controller.

8. The method of claim 1 , further comprising:
storing information of the rotation direction of the motor.

9. The method of claim 8 , further comprising:
reading the stored information of the rotation direction of the motor; and
providing the corresponding drive signal to the motor based on the read information of the rotation direction of the motor.

10. The method of claim 8 , further comprising:
obtaining a control command for unlocking the rotation direction of the motor; and
deleting the stored information related to the rotation direction of the motor according to the control command.

11. An electronic governor comprising:
a driving circuit configured to provide a driving signal to a motor to drive the motor to rotate; and
a controller electrically coupled to the driving circuit and configured to:
determine a rotation direction of the motor based on addressing information of the electronic governor; and
control the driving circuit to provide a corresponding driving signal to the motor according to the rotation direction.

12. The electronic governor of claim 11 , wherein the controller is further configured to determine the rotation direction of the motor based on a preset correspondence between the addressing information and the rotation direction of the motor.

13. The electronic governor of claim 11 , wherein the controller is further configured to determine the rotation direction of the motor based on a calculation according to the addressing information.

14. The electronic governor of claim 11 , wherein the controller is further configured to:
communicate with an external controller; and
determine the addressing information according to an addressing signal sent by the external controller.

15. The electronic governor of claim 14 , wherein the addressing signal includes a Pulse Width Modulation (PWM) signal.

16. The electronic governor of claim 11 , wherein the controller further includes an analog input port and is configured to determine the addressing information according to voltage information of the analog input port.

17. The electronic governor of claim 16 , wherein:
a preset resistor is connected in series with a communication link between the controller and an external controller; and
the analog input port is configured to detect a voltage value across the preset resistor.

18. The electronic governor of claim 11 , further comprising:
a memory configured to store information of the rotation direction of the motor.

19. The electronic governor of claim 18 , wherein the controller is further configured to:
read the stored information of the rotation direction of the motor; and
control the driving circuit to provide the corresponding drive signal to the motor based on the read information of the rotation direction of the motor.

20. The electronic governor of claim 18 , wherein the controller is further configured to:
obtain a control command for unlocking the rotation direction of the motor; and
delete the stored information related to the rotation direction of the motor according to the control command.

Assignees

• Sz Dji Technology Co Ltd

Inventors

• Zhou Changxing
• Liu Wanqi
• Lan Qiu

Classifications

• B64U2201/00

  UAVs characterised by their flight controls · CPC title

• B64D31/06

  actuated automatically · CPC title

• H02P7/03 Primary

  for controlling the direction of rotation of DC motors · CPC title

• H02P6/30 Primary

  Arrangements for controlling the direction of rotation (H02P6/22 takes precedence) · CPC title

• B64U50/19

  using electrically powered motors · CPC title