航天器组件可靠性试验温度测控技术

The temperature measurement and control in the reliability test for spacecraft unit

文章针对航天器组件试验过程中温度场不均匀和单一控温点难以全面控制组件温度的问题,研究了试验箱内温度场的均匀性分布,组件不同部位在箱内的温度分布规律以及影响这种分布的因素。通过温度测控试验方法的研究,配合所研制的多路温度测控系统,确定了组件试验过程中温度控制点的选取方法,解决了热试验中组件局部温度失控问题,提高了组件的试验安全性和试验质量。

In view of the difficulty of the desirable temperature control in the spacecraft component test due to the non-uniform thermal field and the limited coverage of the single point control, this paper studies the uniformity of the thermal field, the temperature distribution law on different faces of the component inside the test chamber, and various factors that affect the distribution. With the test method for the temperature measurement and control with the multiple temperature measurement and control system, the method of choosing the temperature control point in the test is determined, therefore, the control of temperature may be kept in the local areas in the thermal test.