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          • 暖通空调杂志社>期刊目次>2019年>第4期

            变风量空调系统室温滞后响应数学模型及动态特性研究

            Mathematical model and dynamic characteristics of room temperature hysteresis response for variable air volume air conditioning system

            邢天 张吉礼 历秀明
            大连理工大学

            摘要:

            基于能量守恒定律和变风量空调房间的热工特性,建立了变风量空调房间室温变化动态响应数学模型,并分析了引起室温滞后响应的影响因素。通过阶跃响应试验获得了室温对风量调节机构的滞后动态响应特性。建立了室温对各执行机构滞后响应的辨识模型,通过Simulink对辨识模型进行了仿真。结果表明,辨识模型拟合度较高,可以较好地反映室温滞后响应特性。

            关键词:变风量空调系统,室温,滞后响应,数学模型,动态特性,辨识模型

            Abstract:

            Based on the energy conservation law and the thermal characteristics of variable air volume (VAV) air conditioning room, establishes a mathematical model of VAV room temperature dynamic response, and analyses the influencing factors of the room temperature hysteresis response. Obtains a hysteretic response characteristics of room temperature to airflow rate regulating actuators by step response tests. Establishes a hysteresis response identification model of room temperature to regulating actuators, and simulates the identification model by Simulink. The results show that the identification model has a higher fitting degree and can reflect the hysteresis response characteristics of room temperature well.

            Keywords:variableairvolumeairconditioningsystem,roomtemperature,hysteresisresponse,mathematicalmodel,dynamiccharacteristic,identificationmodel

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