以蒸氣加熱均溫板之PID控制實驗

A PID Control Experiment on a Steam Heated Uniform Temperature Plate

謝汶制(Wun-Jhih Sie)

指導教授 ： 許政行

中原大學/工學院/機械工程研究所/碩士(2006年)

https://doi.org/10.6840/CYCU.2006.00004

摘要

中文摘要

本論文的目的是達成熱盤的均溫控制，以一個密闭的空間，藉著氣體的膨脹所產生的壓力，使溫度得以提升，並輔以PID控制器，做最有效的利用。本研究可直接用於工業界中如PCB成型中的壓合，微射出成型機用之模具溫度控制。
本實驗系統是以感溫棒，電熱線配合可程式控制器中設定的PID控制器作定溫與升降溫均溫控制，在安全考量下，另設一組安全閥，以便壓力過高時能夠自動洩壓，不致產生爆炸的危險。同時為了蒸氣溫度能大幅提升，液體以純水塡入，因為一般水中的雜質會使蒸氣溫度下降許多。
目前業界在均溫製程中，熱盤大多採用多點式PID模式控制，易造成參數設定困難及均溫效果不理想。因此均溫誤差±1℃. 本文於熱盤加熱過程中以PID控制器加熱液體使其溫度昇溫，並使其汽化，加以控制壓力，如此便可以最單純之單點PID溫度控制器，達到極均溫的目的。
實驗結果顯示，就均溫結果而言，本文所得最佳均溫誤差範圍已達到±0.25℃。

關鍵字

PID控制實驗 ； 均溫板 ； 蒸氣加熱

並列摘要

Abstract

The purpose of this study is to make the temperature of the heat plate (heater) controlled: the temperature increases due to the pressure of expending gas in an isolated room, and with the PID controller for the most effective use. The result of temperature controlling could be adopting in industry, such as combination of PCB formation and the tools for micro-injection.

In our experimental condition, we utilize the temperature-sensed bar and electro-thermal wires along with the PID controller to keep the temperature constant, increasing as well decreasing.
For the sake of safety, we also equip a set of safety pistons to release the pressure automatically as the temperature is over-high. Not to explode for fear of explosion. Meanwhile, we pour pure water to rise the temperature of steam a lot because the impurities in the water could drop off the temperature of steam dramatically.

Today, in the process of the temperature controlling so far, because most of the heat plates control the temperature by adopting multi-pointed PID mode, it causes the difficulties of setting reference and controlling the temperature. Therefore, the error of the temperature is +1 or -1 degree Celsius.
In the heating process to a heat plate, we use PID controller to rise the temperature of liquid to vaporize, thus, we could take advantage of the simplest single-pointed PID temperature controller for the sake of temperature controlling.
As a result, referring to the temperature controlling, the least error range to the temperature controlling has reached +0.25 or -0.25 degree Celsius.

並列關鍵字

Uniform Temperature Plate ； PID Control Experiment ； Steam

參考文獻

[12] 曾建銘，以液態氣態間之相變化達均溫控制功能，私立中原大學電機工程學研究所，碩士論文，2004。

[13] 邱漢得、以液體間接加熱之溫度控制、私立中原大學機械工程學研究所，碩士論文，2006。

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