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    樊超, 司慧, 张天鹏, 颜小林, 王霄, 常建民. 家具VOC检测气候舱温湿度控制系统设计与应用[J]. 北京林业大学学报, 2015, 37(8): 112-116. DOI: 10.13332/j.1000-1522.20150128
    引用本文: 樊超, 司慧, 张天鹏, 颜小林, 王霄, 常建民. 家具VOC检测气候舱温湿度控制系统设计与应用[J]. 北京林业大学学报, 2015, 37(8): 112-116. DOI: 10.13332/j.1000-1522.20150128
    FAN Chao, SI Hui, ZHANG Tian-peng, YAN Xiao-lin, WANG Xiao, CHANG Jian-min. Design and application of temperature and humidity control system for environmental chamber on the determination of VOC emission from furniture[J]. Journal of Beijing Forestry University, 2015, 37(8): 112-116. DOI: 10.13332/j.1000-1522.20150128
    Citation: FAN Chao, SI Hui, ZHANG Tian-peng, YAN Xiao-lin, WANG Xiao, CHANG Jian-min. Design and application of temperature and humidity control system for environmental chamber on the determination of VOC emission from furniture[J]. Journal of Beijing Forestry University, 2015, 37(8): 112-116. DOI: 10.13332/j.1000-1522.20150128

    家具VOC检测气候舱温湿度控制系统设计与应用

    Design and application of temperature and humidity control system for environmental chamber on the determination of VOC emission from furniture

    • 摘要: 为促进国产气候舱内部条件控制水平的提高,以西门子S7-200系列PLC为核心,设计了用于家具VOC检测气候舱的温湿度控制系统。基于该PLC提供的PID运算功能,采取PID控制法与模糊控制法相结合的分段温度控制策略,利用露点调湿原理将控制舱内相对湿度转化为控制调湿水箱温度,实现舱内温湿度的解耦稳定控制。结果表明:设计系统应用于1m3气候舱时,舱内温度和相对湿度的控制精度分别达到±0.4℃和±3%,满足国内外标准要求,具有较好的操控性能,可推广应用到其他规格的气候舱。

       

      Abstract: Based on SIMATIC S7-200 series PLC, a temperature and humidity control system was designed for the determination of VOC emission from furniture in environmental chamber (EC), in order to improve the level of internal condition control in domestic products. The sectional control strategy was employed using the combination of the PID arithmetic provided by PLC, and fuzzy control method. Simultaneously, the transformation of relative humidity (RH) control in EC into one of the temperature controls in the water tank was realized by applying the dew-point humidity control theory. The temperature and RH control in EC were decoupled and stabilized after employing this method. The results showed that the accuracy for temperature and RH was ±0.4℃ and ±3% when the system was applied to a 1m3 EC, which met the requirements of domestic and foreign standards. This system has high-quality performance which can be applied to other scales of EC.

       

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