Three-Axis Gimbal Mode Switching for Continuous Roll Rotation
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Solution Overview
Problem
Conventional gimbals have a software angle limit of ±30° in the roll direction, leading to wild swinging when the load rotates beyond 30°, preventing continuous shooting in large-angle or special effect scenes.
Innovation Solution
A gimbal system with a first, second, and third shaft assembly, including motors that allow for mode-switching to maintain three degrees of freedom, enabling the roll-axis motor to rotate beyond 45° without constraint, and switching roles between motors to accommodate various shooting scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a software angle limit of ±30° is implemented in the roll direction, then the gimbal stability is improved and wild swinging is prevented, but the ability to perform large-angle shooting and special effect scenes is restricted
Solution Approach 1:
The patent implements dynamic mode switching between first mode and second mode. In the first mode, the gimbal operates with conventional roll limits for stability. In the second mode, the gimbal enables large-angle rotation beyond 45° for special effect scenes. The system dynamically transitions between these modes based on operational requirements, allowing both stability and versatility to be achieved at different times.
Solution Approach 2:
The patent changes the operational parameters of the gimbal by switching between different modes. In the first mode, the roll angle is limited to ±30°. In the second mode, the roll angle limit is extended beyond 45°. The control system adjusts the angle limits and motor role assignments based on the selected mode, enabling the gimbal to adapt to different shooting requirements.
2Adaptability or versatility
If the load rotates more than 30° in the roll direction and reaches 45° or more, then large-angle shooting is enabled, but the gimbal will swing wildly and the camera cannot continue shooting
Solution Approach 1:
The system dynamically switches between operational modes. When large-angle rotation is required, the system transitions to the second mode where the gimbal is configured to support rotation beyond 45° without wild swinging. The dynamic nature of the mode switching allows the system to maintain shooting continuity in both conventional and large-angle scenarios.
Solution Approach 2:
The gimbal system is designed to perform multiple functions by supporting both conventional operation (first mode with ±30° limit) and large-angle rotation (second mode with beyond 45° capability). The multi-functional design allows the same gimbal to handle both stable conventional shooting and dynamic special effect scenes without requiring separate systems.
3Adaptability or versatility
If mode switching is implemented to enable large-angle rotation, then shooting versatility is improved, but the control system complexity increases
Solution Approach 1:
The control system is designed to handle multiple modes of operation within a single unified framework. The same control system manages both the first mode (conventional operation) and the second mode (large-angle rotation) by adjusting parameter settings and motor role assignments. This universal approach avoids the need for separate control systems for different shooting scenarios.
Solution Approach 2:
The mode switching is achieved by changing control parameters rather than adding complex hardware. The system adjusts angle limits, motor role assignments, and operational characteristics based on the selected mode. This parameter-based approach keeps the control system relatively simple while still enabling versatile operation across different shooting scenarios.
Data Source
AI summary
A gimbal includes a first shaft assembly, a second shaft assembly, and a third shaft assembly. The first shaft assembly includes a first shaft arm and a first motor arranged at a first end of the first shaft arm. The second shaft assembly includes a second shaft arm and a second motor arranged at a first end of the second shaft arm and fixedly connected to a second end of the first shaft arm that is distal from the first motor. The third shaft assembly includes a third shaft arm configured to carry a load and a third motor arranged at an end of the third shaft arm and fixedly connected to a second end of the second shaft arm that is distal from the second motor.