热屏等温型热流计仿真模型分析

文章建立了热屏等温型热流计的简化仿真模型,对此模型进行稳态和瞬态模拟标定,并与近似理论分析结果进行比较,验证了仿真模型的正确性.计算了敏感片背面发射率不同时的静态灵敏度和温度瞬态响应特性,结果表明,敏感片背面发射率高时,瞬态响应速度快,静态灵敏度低;在选择敏感片背面发射率时,要综合考虑静态灵敏度和瞬态响应速度.文章建立的热流计仿真模型可以提供热流计分析平台,为设计和优化热流计提供参考.

Simulation model analysis of isothermal screen radiometer

A simplified simulation analysis model of isothermal screen radiometer is established,and is calibrated in steady and transient states.The calibration is validated by theoretical analysis.The sensor's static sensitivity and the transient response characteristics of temperature are compared and analyzed with the different back emissivity of the sensor.The results show that the temperature transient response of the sensor is quick but static sensitivity is low with the high back emissivity of the sensor,and the temperature transient response and static sensitivity of the sensor should be considered while selecting the back emissivity.The radiometer simulation model can provide an analytic platform for its design and optimization.