Drone Motor Auto-Balancer for Rotor Vibration
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Solution Overview
Problem
Conventional drones with detachable propellers often suffer from rotor imbalance due to low attachment accuracy, leading to vibration and reduced reliability of the motor and drone systems.
Innovation Solution
A motor with an auto-balancer mechanism that automatically corrects the dynamic balance of the rotor, ensuring stability even when the propeller is unbalanced, and is integrated into a rotor device and drone design to enhance reliability and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a propeller is detachably attached to a rotor, then ease of operation is improved, but manufacturing precision deteriorates leading to rotor imbalance
Solution Approach 1:
The auto-balancer automatically detects and corrects rotor imbalance without requiring manual intervention or high attachment precision. The system self-adjusts by moving the counterweight based on detected imbalance, eliminating the need for precise manual propeller attachment while maintaining balanced operation
2Ease of manufacture
If attachment accuracy is low, then ease of manufacture is improved, but reliability deteriorates due to rotor vibration
Solution Approach 1:
The auto-balancer continuously monitors rotor balance and automatically adjusts the counterweight position to compensate for attachment inaccuracies. This self-correcting mechanism prevents vibration-induced reliability issues even when propellers are attached with low precision, maintaining motor reliability without requiring high manufacturing accuracy
3Reliability
If an auto-balancer is added, then reliability is improved by correcting imbalance, but device complexity increases
Solution Approach 1:
The auto-balancer adjusts the position parameter of a counterweight along the rotor shaft to dynamically compensate for imbalance. By changing only the positional parameter of an existing component rather than adding complex active control systems, the design achieves improved reliability with minimal increase in device complexity
Data Source
AI summary
A motor mounted on a drone includes a rotor including a propeller mounting portion with a propeller detachably attached, the rotor being rotatable about a central axis, a stator radially facing the rotor with a gap therebetween, and an auto-balancer capable of automatically correcting dynamic balance of the rotor.