Gimbal control method, gimbal control apparatus, and gimbal

Patent metadata

Field	Value
Publication number	US-10394107-B2
Application number	US-201816169532-A
Country	US
Kind code	B2
Filing date	Oct 24, 2018
Priority date	May 31, 2016
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

A gimbal includes an adjustment mechanism and a processor in communication with the adjustment mechanism. The processor is configured to obtain a mode selection activation condition and determine an operation mode according to the mode selection activation condition. The mode selection activation condition includes at least one of a control instruction or an attitude change parameter of the adjustment mechanism. The operation mode includes a walk operation mode or a sensitive operation mode. The adjustment mechanism is configured to change attitude in the walk operation mode at a lower responding speed than in the sensitive operation mode.

First claim

What is claimed is:

1. A gimbal comprising:
an adjustment mechanism; and
a processor in communication with the adjustment mechanism and configured to:
obtain a mode selection activation condition, the mode selection activation condition including at least one of a control instruction or an attitude change parameter of the adjustment mechanism; and
determine an operation mode according to the mode selection activation condition, the operation mode including a walk operation mode or a sensitive operation mode, and the adjustment mechanism being configured to change attitude in the walk operation mode at a lower responding speed than in the sensitive operation mode.

2. The gimbal according to claim 1 , wherein the processor is further configured to, in response to the operation mode being the walk operation mode:
obtain an attitude change angle of the adjustment mechanism in a direction; and
in response to the attitude change angle being smaller than a preset angle, adjust a following angular velocity of the adjustment mechanism in the direction according to a preset association relation.

3. The gimbal according to claim 2 , wherein the processor is further configured to:
obtain an attitude change frequency of the adjustment mechanism in the direction; and
in response to the attitude change frequency being equal to a preset frequency and the attitude change angle being smaller than the preset angle, adjust the following angular velocity of the adjustment mechanism in the direction according to the preset association relation.

4. The gimbal according to claim 2 , wherein:
the preset association relation includes that the following angular velocity is a fourth order concave function of the attitude change angle; and
at least one of coefficients of the fourth order concave function is larger than zero.

5. The gimbal according to claim 2 , wherein:
the preset angle is a first preset angle, and
the processor is further configured to:
in response to the attitude change angle in the direction being larger than or equal to a second preset angle, control the following angular velocity of the adjusting mechanism in the direction to be equal to a preset maximum following angular velocity, the second preset angle being larger than or equal to the first preset angle.

6. The gimbal according to claim 2 , wherein:
the preset angle is a first preset angle, and
the processor is further configured to:
in response to the attitude change angle becoming larger than a second preset angle, switch the operation mode from the walk operation mode to the sensitive operation mode, the second preset angle being larger than or equal to the first preset angle.

7. The gimbal according to claim 1 , wherein:
the operation mode is the sensitive operation mode for controlling a following angular velocity of the adjustment mechanism according to the attitude change parameter of the adjustment mechanism.

8. The gimbal according to claim 7 , wherein the processor is further configured to:
obtain an attitude change angle of the adjustment mechanism in a direction; and
adjust the following angular velocity of the adjustment mechanism in the direction according to a preset association relation including a function lower than fourth order.

9. The gimbal according to claim 7 , wherein the processor is further configured to:
in response to an attitude change angle in a direction being smaller than a preset angle, switch the operation mode from the sensitive operation mode to the walk operation mode.

10. The gimbal according to claim 1 , wherein the operation mode is an automatic matching mode for automatically selecting one of the walk operation mode and the sensitive operation mode according to the attitude change parameter of the adjustment mechanism.

11. The gimbal according to claim 9 , wherein the processor is further configured to:
obtain an attitude change angle of the adjustment mechanism in a direction; and
in response to the attitude change angle in the direction being smaller than a preset angle, activate the walk operation mode.

12. The gimbal according to claim 10 , wherein:
the preset angle is a first preset angle; and
the processor is further configured to:
in response to the attitude change angle in the direction being larger than or equal to a second preset angle, activate the sensitive operation mode.

13. The gimbal according to claim 11 , wherein the processor is further configured to:
obtain an attitude change frequency of the adjustment mechanism in a direction and an attitude change angle of the adjustment mechanism in the direction; and
in response to the attitude change frequency being equal to a preset frequency and the attitude change angle being smaller than a preset angle, activate the walk operation mode.

14. The gimbal according to claim 1 , further comprising:
an inertial measurement unit in communication with the processor and configured to obtain the attitude change parameter.

15. The gimbal according to claim 1 , wherein:
the adjustment mechanism includes
a motor in communication with the processor;
an output axis connected to the motor; and
a connection arm fixed to the output axis; and

the motor is configured to adjust a following angle of the connection arm according to the attitude change parameter of the adjustment mechanism.

16. The gimbal according to claim 15 , further comprising:
an inertial measurement unit provided at the connection arm and configured to obtain the attitude change parameter.

17. The gimbal according to claim 15 , wherein the connection arm is configured to be coupled to a photographing assembly.

18. The gimbal according to claim 17 , further comprising:
an angle sensor provided at the output axis and configured to obtain a relative angle between the adjustment mechanism and the photographing assembly;
wherein the processor is configured to obtain the attitude change parameter of the adjustment mechanism according to the relative angle.

19. The gimbal according to claim 1 , wherein the processor is further configured to receive the control instruction received from an operation instrument.

20. The gimbal according to claim 19 , wherein the operation instrument is arranged at the gimbal or a remote controller of the gimbal and includes at least one of a gear switch, a knob switch, a potentiometer, a linear switch, or a touch screen.

Assignees

• Sz Dji Osmo Technology Co Ltd

Inventors

• Wang Yan
• Yang Bingzhen

Classifications

• H04N23/66 Primary

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• H04N23/667

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• H04N23/68

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• F16M2200/044

  for balancing rotational movement of the undercarriage · CPC title

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