摘要
对沈阳农业大学园艺学院日光温室后屋面内侧温度、温室气温、温室地温进行测试和分析,利用传热学理论,以温室热平衡模型为基础,分析了温室后屋面内侧温度变化的动态模型,并运用Matlab软件进行非线形回归,求出该模型的参数。该模型可较准确的反映温室后屋面内侧的温度变化特性,是预测后屋面温度变化,实现自动化控制的基础。为进一步研究日光温室保温特性,实现智能温室前馈控制提供了手段和依据。
Measurement and analysis were conducted on temperature of back roof,air and soil in a greenhouse located in Shenyang Agriculture University. Based on the model of the thermal balance, applying the diathermanous theory, the forecasting dynamic thermal model of the temperature of the back roof inside greenhouse was analyzed. Nonlinear regression was conducted by Matlab software, and the parameters of this model were obtained. The model reflected the characteristics of the temperature of the back roof,and provided the foundation for forecasting the temperature change and realizing the automatic control. The model provided measures and references for researching heat preservation and realizing the control in advanced of intelligent greenhouse.
出处
《现代农业科技》
2012年第5期270-273,278,共5页
Modern Agricultural Science and Technology
关键词
日光温室
热流量
后屋面温度
变化规律
预测模型
solar greenhouse
thermal current amount
temperature of the back roof
change law
forecasting model
