热电制冷器热模型建立与修正方法研究

发布时间：2018-05-30 18:34

  本文选题：热电制冷器 + 热模型　； 参考：《工程热物理学报》2017年04期

【摘要】：影响热电制冷器仿真温度的输入参数较多且不易准确测得导致建立高精度仿真模型较为困难。为此,提出了一种热电制冷器热模型建立与修正方法。首先建立热电制冷器温度场仿真模型,并基于Spearman相关级数对影响仿真温度的参数进行灵敏度辨识,确定强相关参数和弱相关参数;然后以热电制冷器的实测温度值为目标,采用多岛群遗传算法对强相关参数进行修正;在此基础上,再对弱相关参数进行修正;最后运用霍克基维斯直接搜索算法对修正后的参数进行更为精确的修正,得出了电流为3.6 A时模型输入参数的修正值。采用相同方法获得了电流在0~3.9 A范围内输入参数的修正值。据此建立的热模型,仿真值与实测值最大误差小于4.9℃(-5~100.5℃范围内),表明该热模型的建立与修正方法合理有效。
[Abstract]:It is difficult to establish a high-precision simulation model because of the large input parameters which affect the simulation temperature of thermoelectric chiller. In this paper, a method of thermal model establishment and modification for thermoelectric refrigerators is proposed. Firstly, the temperature field simulation model of thermoelectric cooler is established, and the sensitive identification of the parameters affecting the simulation temperature is carried out based on Spearman correlation series, and the strong correlation parameters and weak correlation parameters are determined, and then the measured temperature values of the thermoelectric cooler are taken as the target. Multi-island genetic algorithm is used to modify the strongly correlated parameters; on this basis, the weakly correlated parameters are modified; finally, the modified parameters are modified more accurately by using the Hawkevez direct search algorithm. The revised values of the input parameters of the model are obtained when the current is 3.6 A. The correction values of input parameters in the range of 0 ~ 3.9 A are obtained by the same method. The maximum error between the simulated and measured values is less than 4.9 鈩，

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