Piezoelectric Plasma Generator Frequency Control
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Solution Overview
Problem
Current plasma generators using piezoelectric transformers are not adequately developed for compact, lightweight, and portable applications, and lack the ability to adjust plasma generation according to specific requirements.
Innovation Solution
A plasma generator configuration that includes an electrical power source, detection circuits, a drive circuit, a control circuit, and a piezoelectric transformer, where the control circuit adjusts the frequency of AC power to control plasma generation based on target electrical power or phase difference, allowing for adjustable plasma output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a piezoelectric transformer is used to generate plasma, then the device can be made compact and lightweight, but the ability to adjust plasma generation amount is insufficient
Solution Approach 1:
The patent applies dynamics by making the drive frequency adjustable rather than fixed. The control circuit varies the drive frequency of the piezoelectric transformer based on feedback from voltage and current detection, enabling dynamic adjustment of plasma generation amount while maintaining compact device structure
Solution Approach 2:
The patent changes the electrical parameter (drive frequency) of the piezoelectric transformer to control plasma generation. By adjusting the frequency parameter within a specific range, the system can vary plasma output levels while keeping the device compact and lightweight
2Adaptability or versatility
If the plasma generation amount is increased for various applications, then the versatility improves, but the device complexity increases
Solution Approach 1:
The patent implements feedback control where the control circuit continuously monitors voltage and current from the power source, calculates actual power consumption, and adjusts the drive frequency accordingly. This automatic feedback mechanism enables versatile plasma generation control without requiring complex manual control systems
Solution Approach 2:
The system performs self-regulation by automatically adjusting its own drive frequency based on detected electrical parameters. The control circuit independently manages plasma generation levels without external intervention, simplifying the overall device architecture while maintaining application versatility
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
Enables simple and adjustable plasma generation, facilitating the creation of small, inexpensive plasma generators suitable for various applications.
Implementation Method 1
a piezoelectric transformer configured for the AC power to be supplied to
Implementation Method 2
a detection circuit configured to detect a voltage and a current output from the electrical power source
Implementation Method 3
the control circuit is configured to control a frequency of the AC power output from the drive circuit
Data Source
AI summary
A plasma generator capable of adjusting the amount of plasma generation in a simple configuration includes a control circuit controlling a frequency of an AC power supplied to a piezoelectric transformer and a control signal generation circuit providing a control signal to the control circuit. The plasma generator is configured so that the control signal output from the control signal generation circuit is appropriately adjusted. The control circuit controls the frequency of the AC power so as to bring a target value, which is set based on the control signal provided from the control signal generation circuit.