Wireless Power Resonance Control for Vibrating Tools
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Solution Overview
Problem
The existing vibrating processing apparatuses face limitations in design flexibility due to the need for closely arranged primary and secondary coils for efficient coil induction, which is unstable due to spindle rotation, loading, and temperature variations, restricting the distance and mechanical design.
Innovation Solution
A power supply system utilizing a wireless electricity transmitter and receiver with a frequency converter and controller to maintain resonance frequency matching between the transmitter and receiver, allowing for adjustable oscillation frequency to minimize phase difference and optimize electricity transmission to the vibrator, enabling longer coil distances and improved design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the primary coil and secondary coil are arranged close to each other for efficient coil induction, then electricity transmission efficiency is improved, but the mechanical design flexibility and operational freedom are limited due to the strict distance requirement
Solution Approach 1:
The patent applies dynamics by making the coil distance adjustable rather than fixed. The mechanical structure allows the distance between primary and secondary coils to be dynamically changed during operation, enabling the system to adapt to different operational requirements while maintaining efficient electricity transmission. This resolves the contradiction by transforming a static constraint into a dynamic parameter.
Solution Approach 2:
The patent changes the parameter of coil distance from a fixed value to a variable parameter that can be adjusted within a certain range. By allowing the distance to vary, the system can optimize electricity transmission efficiency for different operational conditions while maintaining mechanical design flexibility. This parameter change approach directly addresses the technical contradiction.
2Adaptability or versatility
If resonance frequency matching is used to increase the distance between primary and secondary coils, then mechanical design flexibility is improved, but the resonance frequency becomes unstable due to spindle rotation, loading, and temperature variations
Solution Approach 1:
The patent implements feedback control by monitoring the actual resonance frequency and adjusting the electrical parameters to maintain frequency matching between primary and secondary coils. This feedback mechanism compensates for frequency drift caused by spindle rotation, loading changes, and temperature variations, ensuring stable resonance conditions while allowing increased coil distance for mechanical flexibility.
Solution Approach 2:
The patent replaces reliance on purely mechanical resonance frequency stability with an electrical control system. Instead of depending on mechanical precision to maintain resonance, the system uses electrical parameter adjustment (frequency, voltage, current) to achieve and maintain resonance conditions, thereby decoupling frequency stability from mechanical constraints.
3Loss of energy
If the distance between primary coil and secondary coil is reduced, then electricity transmission efficiency is improved, but the operational freedom and design options for the spindle and processing tool are restricted
Solution Approach 1:
The patent makes the coil distance a dynamic parameter that can be adjusted during operation rather than a fixed design constraint. This allows the system to optimize electricity transmission efficiency by adjusting the distance according to operational requirements, thereby improving both coil induction efficiency and operational freedom simultaneously.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the flexibility of the vibrating processing apparatus design by stabilizing the resonance frequency and improving electricity transmission efficiency, allowing for more versatile mechanical configurations and efficient vibration of processing tools.
Implementation Method 1
The transmitter is adapted for transmitting electricity to the wireless electricity receiver
Implementation Method 2
the vibrator is a piezo element
Implementation Method 3
The wireless electricity receiver has a receiver resonance frequency which is identical to the resonance frequency of the vibrator
Data Source
AI summary
The power supply system of the present invention includes a wireless electricity transmitter and a wireless electricity receiver transmitting electricity by electromagnetic coupling. The wireless electricity receiver is further connected to a vibrator of a vibrating processing apparatus to transmit electricity thereto. The wireless electricity transmitter has a controller to monitor the operating voltage and the operating current of the transmitter, and alternates the oscillation frequency of the operating voltage according to the phase difference between the operating voltage and the operating current. Thereby, the oscillation frequency may approach the resonance frequency of the vibrator in order to improve the efficiency of electricity transmission. Also, the distance between the wireless electricity transmitter and the wireless electricity receiver can be increased.