Ultrasonic Vibrator Feedback Control for Resonance and Energy Compensation
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Solution Overview
Problem
Existing ultrasonic devices face issues due to resonant frequency errors in individual vibrators and lack of feedback circuits for voltage compensation, leading to improper energy distribution and potential damage from defective vibrators.
Innovation Solution
A device with a current feedback circuit and adaptive envelope detection system to adjust voltage and compensate for individual vibrator abnormalities, using a controller to monitor and correct output energy based on temperature and voltage differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a manufacturing resonant frequency is applied regardless of individual resonant frequency of each vibrator, then the device can be simplified, but a resonant frequency error occurs in each vibrator
Solution Approach 1:
The patent implements a feedback mechanism where the controller measures the actual resonant frequency of each ultrasonic vibrator and uses this information to adjust the driving frequency. This closed-loop feedback system ensures that each vibrator operates at its optimal resonant frequency, eliminating the resonant frequency errors that occur with fixed manufacturing frequencies.
2Device complexity
If there is no feedback circuit capable of compensating for voltage differences, then the device structure remains simple, but voltage and current do not flow properly in defective vibrators
Solution Approach 1:
The patent introduces a feedback circuit that continuously monitors the voltage and current across each ultrasonic vibrator. When a defect is detected or voltage/current imbalance is identified, the controller adjusts the driving parameters to compensate for the issue, ensuring proper voltage and current flow even in defective vibrators.
Solution Approach 2:
The system dynamically changes operating parameters such as driving voltage and frequency based on real-time feedback from the vibrators. This adaptive parameter adjustment allows the system to maintain proper operation even when individual vibrators are defective or have varying characteristics.
3Area of stationary object
If a plurality of ultrasonic vibrators are used without individual monitoring, then the device can provide broader treatment coverage, but a small defect in one vibrator causes the target output to not be achieved and treatment effect is halved
Solution Approach 1:
The patent divides the ultrasonic treatment system into independently monitored and controllable vibrator units. Each vibrator is individually monitored for defects and controlled with independent driving parameters, allowing the system to maintain reliable operation across multiple vibrators even when one is defective.
Solution Approach 2:
The feedback system provides individual monitoring of each vibrator's performance, enabling the controller to detect defects in specific vibrators and adjust their operation accordingly. This ensures that defective vibrators do not compromise the overall treatment output, maintaining consistent performance across all vibrators.
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
Ensures accurate energy delivery and prevents overheating by automatically adjusting voltage and irradiation time, maintaining optimal operating conditions for ultrasonic vibrators.
Implementation Method 1
ultrasound is a vibration sound wave generated when electrical energy generated by a potential difference between both ends of an ultrasonic vibrator is converted into mechanical energy
Implementation Method 2
applying a potential difference signal to both ends of a crystal or barium material causes a mechanical change
Data Source
AI summary
A method for controlling a device comprising at least one ultrasonic vibrator according to one embodiment of the present disclosure comprises the steps of: recognizing whether there is an abnormality in the at least one ultrasonic vibrator; if no abnormality is found as a result of the recognition, determining whether target energy compensation of the at least one ultrasonic vibrator is necessary; and if compensation is found to be necessary as a result of the determination, increasing the voltage input to a pulser, increasing PWM duty ratio, or increasing emission time.