Carrier having non-orthogonal axes

Patent metadata

Field	Value
Publication number	US-9561870-B2
Application number	US-201315024128-A
Country	US
Kind code	B2
Filing date	Dec 10, 2013
Priority date	Dec 10, 2013
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A carrier for a movable object to couple a carried object to the movable object, wherein the carrier has at least two rotational axes; wherein a combined rotation about the at least two rotational axes controls an orientation of the carried object or compensates a movement and a vibration of the movable object, so as to stabilize the carried object; wherein an angle formed by the two rotational axes is a non-right angle to reduce a rotation radius of the rotation, thereby reducing an equivalent moment of inertia; and wherein a center of gravity of a load applied on each axis of the two rotational axes coincides with a corresponding axis.

First claim

What is claimed is:

1. A carrier for a movable object, the carrier being configured to couple a carried object to the movable object, said carrier comprising:
at least two rotational axes;
wherein a combined rotation about the at least two rotational axes controls an orientation of the carried object or compensates a movement and a vibration of the movable object to stabilize the carried object;
wherein an angle formed by the two rotational axes is a non-right angle to reduce a rotation radius of the rotation, so as to reduce an equivalent moment of inertia; and
wherein a center of gravity of a load applied on each axis of the two rotational axes coincides with a corresponding axis.

2. The carrier according to claim 1 , wherein:
the carrier with the at least two rotational axes comprises three rotational axes;
a combined rotation about the three rotational axes controls the orientation of the carried object or compensates the movement and vibration of the movable object to stabilize the carried object;
at least one angle formed by two axes among the three rotational axes is a non-right angle; and
a center of gravity of a load applied on each axis of the three rotational axes coincides with a corresponding axis.

3. The carrier according to claim 1 , wherein the non-right angle is greater than 0° but less than 90°.

4. The carrier according to claim 3 , wherein the non-right angle is between 60° and 70°.

5. The carrier according to claim 4 , wherein the non-right angle is about 70°.

6. The carrier according to claim 1 , wherein the non-right angle is formed by bending a lateral shaft arm towards a plane.

7. The carrier according to claim 1 , further comprising a frame assembly, a transmission assembly and a carried object assembly, wherein the frame assembly comprises a first frame, a second frame and a third frame.

8. The carrier according to claim 7 , wherein:
the carrier is a dynamic self-balancing gyroscopic carrier; and
the carrier further comprises a control assembly, the control assembly including an inertial sensor for detecting an attitude information of the carried object and a processor for controlling the attitude of the carried object based upon the attitude information.

9. The carrier according to claim 8 , wherein:
the transmission assembly further comprises a motor assembly controlled by the processor based upon the attitude information; and
the motor assembly directly drives the frame assembly to rotate the frame assembly with respect to the carried object so as to adjust the attitude of the carried object.

10. The carrier according to claim 8 , further comprising a horizontal rotating frame connected to the first frame and second frame, wherein:
the horizontal rotating frame is mounted therein with a cross connection mechanism and a mechanical gyroscope; and
the transmission assembly comprises a first motor directly driving the first frame to rotate the first frame with respect to the second frame, and a second motor directly driving the linkage member to thereby drive the second frame to rotate with respect to the third frame.

Assignees

• Sz Dji Technology Co Ltd

Inventors

• Zhou Li
• Wang Peng

Classifications

• B64U2201/20

  Remote controls · CPC title

• H04N23/6812

  based on additional sensors, e.g. acceleration sensors · CPC title

• B64U2101/30

  for imaging, photography or videography · CPC title

• H04N23/685

  performed by mechanical compensation · CPC title

• F16M2200/041

  for balancing rotational movement of the head · CPC title