Method and system for adaptive gimbal

Patent metadata

Field	Value
Publication number	US-10914418-B2
Application number	US-201816200862-A
Country	US
Kind code	B2
Filing date	Nov 27, 2018
Priority date	May 31, 2016
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

A method for controlling a carrier includes obtaining a motion characteristic of the carrier. The motion characteristic is indicative of a type of a payload being supported by the carrier. The carrier is configured to support a plurality of different types of payload including the type of the payload being supported by the carrier. The method further includes selecting a set of control parameter(s) from a plurality of different sets of control parameter(s) based on the motion characteristic. Each individual set of control parameter(s) of the plurality of different sets of control parameter(s) is suitable for controlling the carrier to support one of the plurality of different types of payload. The method also includes controlling movement of the carrier according to the selected set of control parameter(s).

First claim

What is claimed is:

1. A method for controlling a carrier comprising:
obtaining a motion characteristic of the carrier attached to a movable object, the carrier being movable relative to the movable object, the motion characteristic being indicative of a type of a payload being supported by the carrier, the payload being operably coupled to the movable object via the carrier, and the carrier being configured to support a plurality of different types of payload including the type of the payload being supported by the carrier;
selecting a set of control parameter(s) from a plurality of different sets of control parameter(s) based on the motion characteristic, each individual set of control parameter(s) of the plurality of different sets of control parameter(s) being suitable for controlling the carrier to support one of the plurality of different types of payload; and
controlling movement of the carrier according to the selected set of control parameter(s).

2. The method of claim 1 , wherein the movement of the carrier comprises at least one of an angular displacement, an angular velocity, or an angular acceleration of the carrier.

3. The method of claim 1 , wherein the selected set of control parameter(s) is suitable for effecting the movement of the carrier to achieve at least one of a predefined level of actuation control or response speed.

4. The method of claim 1 , wherein the plurality of different types of payload are different in at least one of mass, center of gravity, size, shape, payload function, or type of material of the payload.

5. The method of claim 1 , wherein the plurality of different types of payload comprise different types of imaging devices configured to be operably coupled to the carrier in different configurations.

6. The method of claim 1 , wherein the motion characteristic of the carrier comprises a vibration motion of the carrier generated by initially effecting movement of the carrier using a set of reference control parameter(s), the vibration motion of the carrier being indicative of a torque response of the carrier for the set of reference control parameter(s).

7. The method of claim 6 , wherein the set of reference control parameter(s) are used to assess the type of the payload that is being supported by the carrier.

8. The method of claim 6 , wherein the plurality of different sets of control parameter(s) are obtained by adjusting at least one parameter from the set of reference control parameter(s).

9. The method of claim 8 , wherein the motion characteristic of the carrier is configured to change as the at least one parameter from the set of reference control parameter(s) is being adjusted.

10. The method of claim 9 , wherein the set of control parameter(s) is selected from the plurality of different sets of control parameter(s) to reduce the vibration motion of the carrier supporting the payload.

11. The method of claim 1 , wherein selecting the set of control parameter(s) from the plurality of different sets of control parameter(s) comprises comparing the motion characteristic of the carrier with a plurality of different motion characteristic models of the carrier for the plurality of different types of payload to determine one of the plurality of different characteristic models that matches the motion characteristic.

12. The method of claim 1 , wherein the motion characteristic of the carrier is obtained in response to a signal applied to the carrier, the signal having at least one of a preassessed frequency or a preassessed amplitude.

13. The method of claim 12 , wherein the carrier comprises at least one motor, and the signal is augmented to an output torque of the at least one motor.

14. The method of claim 12 , wherein:
the motion characteristic of the carrier comprises an angular acceleration of the carrier; and
selecting the set of control parameter(s) from the plurality of different sets of control parameter(s) comprises comparing the angular acceleration of the carrier to a plurality of different angular acceleration responses of the carrier for the plurality of different types of payload.

Assignees

• Sz Dji Osmo Technology Co Ltd

Inventors

• Wang Yan
• Li Guoqing
• Wang Jingyuan

Classifications

• B64U2101/30

  for imaging, photography or videography · CPC title

• B64U20/87

  Mounting of imaging devices, e.g. mounting of gimbals · CPC title

• G05D3/20 Primary

  using a digital comparing device · CPC title

• F16M11/123

  the axis of rotation intersecting in a single point, e.g. by using gimbals · CPC title

• F16M2200/041

  for balancing rotational movement of the head · CPC title