Adaptive Rotary Tool Excessive Rotation Detection
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Solution Overview
Problem
Existing rotary tools have difficulty determining excessive rotation of the tool body due to jamming of the tool accessory in a flexible manner, as the force that can withstand reaction torque varies among users and environments.
Innovation Solution
A rotary tool with a determining part, monitoring part, and criterion changing part that adjusts the determination criterion based on user-specific factors such as holding force, operation time, and tool posture, allowing for flexible assessment of excessive rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed determination criterion is used to detect excessive rotation, then the detection method is simple, but the determination cannot adapt to different users and working environments
Solution Approach 1:
The determination criterion is made dynamic by allowing it to change based on monitored use state information. The controller adjusts the threshold for determining excessive rotation according to the actual operating conditions and user characteristics, transforming a static fixed criterion into a dynamic adaptive one that responds to real-time feedback from the system
Solution Approach 2:
The system implements feedback by monitoring use state information and using this feedback to adjust the determination criterion. The controller continuously observes system operation and modifies the excessive rotation threshold based on the monitored data, creating a closed-loop control system that adapts to changing conditions through feedback mechanisms
2Reliability
If the determination criterion is raised to reduce false positives, then user safety may be compromised, but if lowered, then false alarms increase
Solution Approach 1:
The system changes the determination parameter (threshold for excessive rotation) dynamically based on monitored use state information. Rather than using a fixed threshold, the controller adjusts this parameter according to actual operating conditions, user characteristics, and system state, allowing optimal balance between detection accuracy and operational continuity under different circumstances
Data Source
AI summary
A rotary tool includes a tool body, a motor, a determining part, a monitoring part and a criterion changing part. The motor is housed in the tool body and configured to drive the tool accessory. The determining part is configured to determine whether or not excessive rotation of the tool body around the driving axis due to jamming of the tool accessory occurs, according to a specific determination criterion. The monitoring part is configured to monitor information relating to a use state of the rotary tool. The criterion changing part is configured to change the determination criterion according to the use state.