固态功率放大器热真空试验实施过程中,由于产品自身发热较大和高真空环境下热传递的滞后性,易出现温度过冲或温变速率达不到指定要求的情况.为精确控制试验温度,基于现有真空试验设备温度控制工作原理,根据Goddard中心提出的热学预测公式,提出了热真空试验温度参数控制方法.在某10 W固态功率放大器热真空试验中进行了方法应用,验证了控制方法的有效性.%In the thermal vacuum test operation of solid state power amplifier,due to the working heat of the product and the hysteresis of heat transfer in the thermal vacuum environment,it is easy to cause the temperature overshoot or the temperature change speed to be less than the specified requirement.In order to precisely control the test temperature,based on the temperature control principle of vacuum test equipment and according to the thermal prediction formula proposed by the Goddard Center,it presents a temperature parameter control method of thermal vacuum test.The method is applied to the thermal vacuum test of a 10 W solid state power amplifier,and the method is verified.
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