Aerosol Heating Control with Dynamic Gain for Stable Output
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Solution Overview
Problem
Existing aerosol generation devices face challenges in quickly and consistently heating aerosol generation articles to generate a predetermined amount of aerosols, leading to instability in flavor and taste delivery.
Innovation Solution
The aerosol generation device employs a control unit that uses feedback control to regulate power supplied to a load, increasing the gain and upper limit value as the heating process progresses, ensuring the temperature converges to a predetermined level, thereby stabilizing aerosol production and flavor delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback control is used to stabilize aerosol generation, then aerosol production consistency is improved, but response time during heating is increased
Solution Approach 1:
The feedback control gain is made dynamic rather than static. The gain increases as the heating process progresses, allowing fast response during initial heating while maintaining stability during sustained aerosol generation. This dynamic adjustment resolves the contradiction between quick response and stable control.
Solution Approach 2:
The control parameters (gain and upper limit value) are changed based on the heating progression. By adjusting these parameters dynamically during the heating process, the system achieves both rapid initial heating and stable sustained operation, resolving the time-stability tradeoff.
2Productivity
If heating power is increased to generate aerosols quickly, then productivity is improved, but temperature control precision is worsened
Solution Approach 1:
The upper limit value of power is dynamically adjusted based on heating progression. During initial heating, higher power limits enable rapid temperature rise. During sustained operation, the power limit is reduced to maintain precise temperature control and stable aerosol generation.
Solution Approach 2:
The control system operates in distinct phases (heating phase and sustained generation phase) with different power strategies. This periodic switching between aggressive heating and controlled maintenance resolves the contradiction between speed and precision.
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 approach significantly reduces the time to generate aerosols and maintains consistent aerosol production, enhancing the flavor and taste experience by efficiently heating the aerosol generation article.
Implementation Method 1
a load configured to heat an aerosol generation article by using power that is supplied from a power source
Implementation Method 2
a control unit configured to control the power that is supplied from the power source to the load
Data Source
AI summary
An aerosol generation device includes: a load configured to heat an aerosol generation article including an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source; and a controller configured to control power that is supplied from a power source to the load. When a phase where a temperature of the load is equal to or higher than a value at which a predetermined amount or more of aerosols is capable of being generated from the aerosol generation article, the controller is configured to acquire the temperature of the load and a degree of progress of the phase, to execute feedback control so that the temperature of the load converges to a predetermined temperature, and to increase a gain in the feedback control or an upper limit value of the power, as the degree of progress progresses, in the feedback control.