航天器組件可靠性試驗(yàn)溫度測(cè)控技術(shù)

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

摘要: 文章針對(duì)航天器組件試驗(yàn)過程中溫度場(chǎng)不均勻和單一控溫點(diǎn)難以全面控制組件溫度的問題，研究了試驗(yàn)箱內(nèi)溫度場(chǎng)的均勻性分布，組件不同部位在箱內(nèi)的溫度分布規(guī)律以及影響這種分布的因素。通過溫度測(cè)控試驗(yàn)方法的研究，配合所研制的多路溫度測(cè)控系統(tǒng)，確定了組件試驗(yàn)過程中溫度控制點(diǎn)的選取方法，解決了熱試驗(yàn)中組件局部溫度失控問題，提高了組件的試驗(yàn)安全性和試驗(yàn)質(zhì)量。

Abstract: 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.