中文核心期刊
CNKI期刊全文数据库
中国科学引文数据库(CSCD)源期刊
中国科技论文统计源期刊
万方数据知识服务平台
英国《科学文摘》(SA)
美国化学文摘(CA)
俄罗斯《文摘杂志》(AJ)
德国《天文学与天体物理学文摘》(AAA)
英国《中国天文学和天体物理学》(SCI收录)全文摘译期刊之一
《中国学术期刊文摘》
《中国物理文摘》
《中国天文学文摘》

Chinese Journal of Space Science ›› 2021, Vol. 41 ›› Issue (2): 337-341.doi: 10.11728/cjss2021.02.337

• Space Exploration Technology • Previous Articles     Next Articles

Application of Precision Thermal Control Techniques in Taiji-1 satelliteormalsize

LIU Hong, ZHANG Xiaofeng, FENG Jianchao, ZHU Cheng, CAI Zhiming, XU Yu   

  1. Institute of micro-satellite Innovation, Chinese Academy of Sciences, Shanghai 201203
  • Received:2019-11-12 Revised:2020-03-03 Online:2021-03-15 Published:2021-04-10

Abstract: In order to detect gravitational waves in space, the Chinese Academy of Sciences has drawn up the Taiji plan. The first step of the Taiji plan is to verify the key techniques of the core payload through the Taiji-1 satellite in low Earth orbit. Because the temperature stability directly affects the measurement accuracy of the interferometer ranging and acceleration, the temperature control index of (T±0.1) K with high precision and high stability is proposed for the Taiji-1 satellite. Based on this requirement, an efficient thermal control scheme was designed. In the scheme, the thermal control from the selection of thermal components to the application of stand-alone equipment was controlled according to high indicators. At the same time, in the process of thermal implementation, in order to ensure the efficiency of the scheme, detailed control was also carried out. The thermal control scheme adopts the “constant temperature cage” as the design concept, adopts the means of three-stage temperature control, and combines the principle of active and passive. Finally, the high stability index of on-orbit flight temperature control of (T±0.005) K is obtained. Through the application research of high precision and high stability technology, it is found that thermal control heating scheme, heat leakage control, single resolution of temperature controller, temperature measuring circuit, control algorithm, control precision, temperature measuring resolution of temperature measuring element are still the important factors that restrict high precision temperature control technology.

Key words: High precision, High stability, Multistage temperature control, Temperature controller

CLC Number: