CAJ | 학술논문

为了让空间相机在适合的温度条件下工作，提出一种基于温度水平的主动热控系统。首先，分析相机达到温度平衡的条件，确定主动热控策略；其次，介绍热控系统的构成及工作原理；然后，将相机图像质量无本质影响作为条件，确定主动热控策略中的各项控温指标；最后，确定温度控制算法。相机在轨工作的实验结果表明：依据主动热控策略，系统能够控制相机温度达到平衡，主镜组件与基准温度的温差不大于1℃，主镜组件的周向温差不大于1℃，主镜与次镜组件的温差不大于2℃，主镜与三镜组件的温差不大于5℃，温度控制结果满足主动热控策略中的各项控温指标要求，满足相机工作时对温度的要求。
위료양공간상궤재괄합적온도조건하공작，제출일충기우온도수평적주동열공계통。수선，분석상궤체도온도평형적조건，학정주동열공책략；기차，개소열공계통적구성급공작원리；연후，장상궤도상질량무본질영향작위조건，학정주동열공책략중적각항공온지표；최후，학정온도공제산법。상궤재궤공작적실험결과표명：의거주동열공책략，계통능구공제상궤온도체도평형，주경조건여기준온도적온차불대우1℃，주경조건적주향온차불대우1℃，주경여차경조건적온차불대우2℃，주경여삼경조건적온차불대우5℃，온도공제결과만족주동열공책략중적각항공온지표요구，만족상궤공작시대온도적요구。
In order to make the space camera to work under the condition of appropriate temperature, the active thermal control system based on temperature level was proposed. Firstly, the condition of temperature balance was analyzed and the active thermal control strategy was ascertained. Secondly, the system composition and work principle were introduced. Thirdly, the temperature control indexes of active thermal control were determined under the condition of no essential influence to image quality. Finally, the algorithm of temperature control was determined. Experimental results indicate that the active thermal control system can make the camera in temperature balance based on the active thermal control strategy, the difference in temperature between primary mirror and reference temperature is no more than 1℃, the circumferential difference in temperature of primary mirror is no more than 1 ℃, the difference in temperature between primary mirror and secondary mirror is no more than 2 ℃ and the difference in temperature between primary mirror and third mirror is no more than 5 ℃, the results of temperature control are satisfied the requirements of control indexes of the active thermal control strategy and the camera work temperature.