Dynamic Temperature Control for Laser Light Sources
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Solution Overview
Problem
Existing temperature control systems for apparatuses like chillers face instability in maintaining set temperatures, particularly in high-luminance applications such as laser light sources, leading to potential overheating and reduced lifespan of components.
Innovation Solution
An information processing apparatus that includes an input unit for measured temperature, a change amount determination unit, and an instruction unit to output unit manipulated variables to a temperature control mechanism, allowing for stable temperature control by determining temporal changes and adjusting the manipulated variables accordingly, with features like stepwise operation start and stop to prevent temperature extremes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a temperature control mechanism is used to maintain set temperature, then temperature stability is improved, but the system may exhibit oscillation and instability in operation
Solution Approach 1:
The patent applies dynamics by making the manipulated variable output interval dynamic rather than fixed. The control mechanism adjusts the timing and frequency of manipulated variable outputs based on real-time temperature measurements and calculated temperature changes, transforming a static control system into a dynamic one that adapts to changing thermal conditions.
Solution Approach 2:
The patent implements feedback by continuously measuring the temperature of the laser light source, calculating the temperature change amount, and using this information to determine when and how to output manipulated variables to the temperature control mechanism. This closed-loop feedback system enables the controller to respond to actual temperature conditions rather than operating on predetermined intervals.
2Temperature
If temperature control is applied to high-luminance laser light sources, then temperature management is improved, but the high luminance generates excessive heat that challenges control stability
Solution Approach 1:
The patent applies preliminary action by calculating the temperature change amount in advance based on current temperature measurements and using this calculated value to determine future control actions. The system proactively adjusts the manipulated variable output timing based on predicted temperature trends rather than reacting only after temperature deviations occur.
Solution Approach 2:
The patent changes parameters by dynamically adjusting the manipulated variable output interval based on the calculated temperature change amount. When temperature changes are rapid, the system increases the frequency of manipulated variable outputs, and when temperature is stable, it reduces the frequency, thereby adapting the control intensity to the actual thermal conditions.
3Measurement precision
If manipulated variables are output frequently to maintain precise temperature, then temperature precision is improved, but system response stability deteriorates due to excessive control actions
Solution Approach 1:
The patent applies partial action by outputting manipulated variables selectively rather than continuously. The system determines the appropriate timing and frequency of manipulated variable outputs based on the calculated temperature change amount, applying control actions only when and where needed to maintain temperature precision without causing excessive control oscillation.
Data Source
AI summary
An information processing apparatus includes an input unit, an output unit, a change amount determination unit, and an instruction unit. The input unit is configured to input a measured temperature that is a measured value of a temperature of a measurement point. The output unit is configured to output a manipulated variable to a temperature control mechanism configured to control the temperature of the measurement point to be a set temperature, the manipulated variable being used for controlling the set temperature. The change amount determination unit is configured to determine an amount of temporal change of the input measured temperature. The instruction unit is configured to instruct the output unit to output a unit manipulated variable with a predetermined manipulated variable as a unit, based on a determination by the change amount determination unit.