| 用于温差发生器的高精度温度测量与控制系统设计 |
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| 引用本文： | 黄晶,曾延安,肖恒兵,侯绿,常大定,甘文斌.用于温差发生器的高精度温度测量与控制系统设计[J].光学与光电技术,2005,3(6):51-53. |
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| 作者姓名： | 黄晶 曾延安 肖恒兵 侯绿 常大定 甘文斌 |
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| 作者单位： | 1. 华中科技大学光电子工程系,武汉,430074
2. 华中光电技术研究所,武汉,430073 |
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| 基金项目： | 国防军工计量“十五”科研计划(J082003G001)资助项目 |
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| 摘 要： | 讨论了用于温差发生器的高精度温度测量与控制的设计与实现。采用PT100铂电阻作为温度传感器,详细推导了非平衡电桥测量非线性的校正公式,采用24位的Σ-Δ型的模数转换器AD7714保证了0.005℃的温度测量分辨率。控温电路采用线性化电流方式,算法上对积分分离PID算法做出改良,并与不完全微分PID算法结合形成一种优化PID算法,能快速、精确的把温差稳定到目标值,控温精度达到0.01℃。
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| 关 键 词： | 温差 PT100 非平衡电桥 线性化 PID |
| 文章编号： | 1672-3392（2005）06-0051-03 |
| 收稿时间： | 2005-06-30 |
| 修稿时间： | 2005-08-30 |
Design of High Precision Temperature Measurement and Control for Temperature Difference Generator |
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| HUANG Jing,ZENG Yan-an,XIAO Heng-bing,HOU Lu,CHANG Da-ding,GAN Wen-bing.Design of High Precision Temperature Measurement and Control for Temperature Difference Generator[J].optics&optoelectronic technology,2005,3(6):51-53. |
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| Authors: | HUANG Jing ZENG Yan-an XIAO Heng-bing HOU Lu CHANG Da-ding GAN Wen-bing |
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| Abstract: | A method of high precision temperature measurement and control is introduced.PT100 is used as temperature measurement sensor.Nonlinear revised expressions of imbalance bridge circuit is calculated.0.005℃ can be distinguished exactly by using 24bit Σ-Δ A/D transformer AD7714.A new PID algorithm which combines improved discretely integral PID and inadequacy differential PID,makes the system stabilitate faster and exacter.The precision of the temperature is less than 0.01℃ |
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| Keywords: | temperature difference PT100 temperature sensor imbalance bridge linearization PID |
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