Three-Axis Gimbal Control for Inversion Without Image Flip
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current gimbals experience uncontrollable rotation and image inversion issues when switching between high and low positions, requiring post-capture software adjustments to restore image orientation, and can deadlock due to joint angle limitations.
Innovation Solution
A gimbal with at least three rotatably coupled driving axis assemblies, each with a driving device and joint arm, and a controller that limits the rotation of one or more driving axis assemblies to prevent deadlock and maintain normal operation during attitude adjustments, allowing for smooth transitions between positions without image inversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the gimbal is inverted to switch between high and low positions, then the imaging device can be positioned above the gimbal, but the images captured will be turned upside down requiring software adjustments
Solution Approach 1:
The patent applies inversion by rotating the imaging device 180 degrees around the pitch axis to switch between high and low positions. The handheld rod rotates the imaging device from below the gimbal to above the gimbal, enabling position switching while the controller manages the inversion to maintain proper image orientation
2Adaptability or versatility
If the gimbal allows continuous rotation for attitude adjustment, then the imaging device can be repositioned, but the joint angle may deadlock causing non-stop continuous rotation
Solution Approach 1:
The controller monitors the rotation status of the gimbal and provides feedback control to prevent deadlock. By detecting the joint angle and rotation state, the controller adjusts the driving axis assemblies to maintain stable rotation and avoid the non-stop continuous rotation problem
Solution Approach 2:
The system dynamically adjusts the rotation control based on real-time gimbal state. The controller modulates the driving axis assemblies during rotation to prevent deadlock conditions, enabling smooth attitude transitions while maintaining rotation stability
Data Source
AI summary
A gimbal for supporting a load includes at least three rotatably coupled driving axis assemblies. Each driving axis assembly includes a driving device and a joint arm configured to rotate when driven by the driving device. The gimbal also includes a controller configured to control the gimbal to limit a rotation of at least one of the three driving axis assemblies during a rotation of the gimbal.