Mass-Adaptive Gimbal Torque Ramp-Down to Prevent Camera Impact
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Solution Overview
Problem
Existing gimbals cause damage to camera devices when powered off instantly, leading to collisions with axis walls or ground due to unbalanced center of gravity, resulting in negative user experiences.
Innovation Solution
A gimbal control method and device that configures motor control parameters based on the mass of the camera device, gradually decreasing motor torque when transitioning to a sleep state to prevent sudden power-off and maintain balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the motor is powered off instantly to save power, then power consumption is reduced and use time is increased, but the camera device collides with axis wall or ground causing damage
Solution Approach 1:
The system performs preliminary action by gradually reducing motor torque before complete power-off. The controller decreases motor output torque step-by-step over a predetermined time period, allowing the camera device to come to a gentle stop rather than suddenly dropping, thus preventing collision damage while still achieving power savings.
Solution Approach 2:
The system applies beforehand cushioning by using the motor's gradual torque reduction as a cushioning mechanism. Instead of instant power-off causing direct impact, the motor provides decreasing counter-torque that cushions the camera device's movement, smoothly bringing it to rest before the motor completely powers down.
2Object-affected harmful factors
If the motor torque decreases gradually to prevent camera device collision, then impact on camera device is reduced, but power-off time is extended
Solution Approach 1:
The system applies partial action by implementing torque reduction only for the extent necessary to prevent damage. The motor torque is decreased gradually over a predetermined time period that is sufficient to bring the camera device to a safe stop, but not excessively long to cause unnecessary time loss. This balanced approach achieves protection without excessive delay.
Data Source
AI summary
A gimbal control method includes configuring, while a gimbal is in a power-on state, turning-off motor control parameters according to a mass of a camera device carried by the gimbal. The gimbal includes an electric motor. The turning-off motor control parameters are configured to control the electric motor when the gimbal is powered off or enters a sleep state. The method further includes, in response to the gimbal being powered off or entering the sleep state, controlling a torque of the electric motor to decrease gradually from a starting moment at which the gimbal is powered off or enters the sleep state according to the turning-off motor control parameters.