Ultrasonic Aerosol Vibrator Feedback Control for Stable Atomization
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Solution Overview
Problem
Ultrasonic vibration-type aerosol generating devices experience inconsistent atomization due to changes in frequency response of the vibrator, leading to variable aerosol production.
Innovation Solution
An aerosol generating device with a vibrator that adjusts vibration speed based on feedback signals from a feedback circuit, which detects environmental changes and adjusts the supply voltage to maintain a target vibration speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultrasonic vibration-type aerosol generating devices are used, then aerosol generation is achieved, but the frequency response of the vibrator changes resulting in inconsistent atomization
Solution Approach 1:
The patent implements a feedback control system where the controller monitors the vibration frequency of the vibrator and adjusts the driving frequency accordingly. When the vibration frequency deviates from the target value due to frequency response changes, the controller modifies the driving frequency to bring the vibration frequency back to the target value, thereby maintaining consistent atomization despite environmental changes
Solution Approach 2:
The patent dynamically adjusts the driving frequency parameter based on the actual vibration frequency feedback. By changing the driving frequency parameter in response to frequency response variations, the system compensates for environmental changes and maintains stable atomization performance
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 consistent atomization levels despite environmental variations, enhancing the user's smoking experience by providing a constant amount of aerosol.
Implementation Method 1
a piezoelectric element configured to transform electrical energy to mechanical energy or vice versa
Implementation Method 2
an atomizer configured to generate an aerosol by dividing a liquid into fine particles using vibrations generated by a vibrator
Data Source
AI summary
An aerosol generating device includes a vibrator configured to vibrate to generate an aerosol from an aerosol generating material, a controller configured to control the vibrator to vibrate at a target vibration speed, and a feedback circuit configured to detect an electrical signal representing a frequency response of the vibrator that changes according to an operating environment of the vibrator and output a feedback signal based on the detected electrical signal, and the controller may adjust the vibration speed of the vibrator based on the feedback signal output from the feedback circuit.