PT Camera Drive Current Control for Resonance Speed Ranges
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Solution Overview
Problem
Existing PT camera systems experience vibrations and resonance sounds due to resonance when driving at certain speed ranges, and uneven speed occurs when speed periodically changes, which affects video quality.
Innovation Solution
A control apparatus that adjusts the current value applied to the driving units based on whether the speed falls within a predetermined range, increasing the current value to reduce vibrations and uneven speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the current value is increased in a high-speed mode to drive the motor at high speed, then the productivity is improved, but the resonance sound becomes large
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the current value based on the driving speed. When the driving speed falls within the predetermined resonance speed range, the control apparatus increases the current value to counteract the resonance effect. This allows the system to maintain high-speed operation while suppressing resonance sounds through adaptive parameter modification.
2Stability of the object's composition
If the current value is increased to suppress vibration at resonance speed, then the stability is improved, but the energy consumption increases
Solution Approach 1:
The patent implements dynamics by making the current value adaptive rather than static. The control apparatus continuously monitors the driving speed and adjusts the current value in real-time, increasing it only when the speed falls within the resonance range and maintaining normal levels otherwise. This dynamic adjustment ensures driving stability when needed while minimizing unnecessary energy consumption.
3Productivity
If the speed is increased to improve video distribution efficiency, then the productivity is improved, but vibration and uneven speed occur
Solution Approach 1:
The patent applies feedback control by monitoring the driving speed and comparing it against the predetermined resonance speed range. When the speed enters the resonance range, the system provides feedback by increasing the current value to suppress vibration and maintain uniform speed. This closed-loop control ensures that high-speed operation does not compromise speed uniformity or video distribution quality.
Data Source
AI summary
A control apparatus comprises a driving unit configured to change an orientation of an image capturing unit. In a case where the orientation of the image capturing unit is changed, the control apparatus applies a first current value applied at the time of normal driving to the driving unit in a case where a speed of the driving unit does not fall within a predetermined speed range, and applies a second current value larger than the first current value to the driving unit in a case where the speed of the driving unit falls within the predetermined speed range.