High-precision temperature control method study based on hiberarchy thermal control
- Paper number
IAC-14,C2,P,76,x24759
- Author
Mr. Song Jialiang, Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, China, xzhm810604@163.com, China
- Year
2014
- Abstract
pacecraft precision temperature control technology is currently an important direction in spacecraft thermal control field. In order to solve the problem of spacecraft high- precision temperature control, the thesis makes a study about the method of spacecraft high -precision temperature control. A hiberaracy thermal control design method is proposed. The method lays equipments in different areas according to different indexs of equipments; heat insulation design is used between areas to gradually build a stable working environment for the high-precision temperature control equipment,supplemented by high-precision temperature control algorithm to achieve the purpose of high-precision temperature control in core area. The thesis derived the thermophysical parameters a、b、c、d、e and k influencing hiberarchy high- precision temperature control by theoretical derivation analysis and made a specfic analysis about the paramenters in virtue of digital thermal analysis tool. The results show that a hiberarchy thermal control design is an effective method to solving spacecraft high-precision temperature control. The digital thermal analysis results show hiberarchy thermal control make precision of temperature control better than 0.01℃; parameters a、b、d and e only influence temperature level; parameter c not only influences temperature level, but also influence precise of temperature control; Conduct coefficient K influences temperature level more than precise of temperature control, due to the mounting surface high-precision active temperature compensated. The hiberarchy thermal control method provides a new way for solving spacecraft high- precision temperature control. The research results have a certain reference significance for further research of high-precision temperature control technology.
- Abstract document
- Manuscript document
(absent)