一种轻小型遥感相机高精度主动热控设计

Design of High Precision Control of Space Camera Temperature Controlling 

摘要:

轻小卫星的集成化、紧凑化和小型化设计理念使得卫星散热困难,迫切需要高效率、高可靠、低成本的热控分系统,来控制卫星内部的热控过程;介绍了一种分布式测温控温装置,在航天相机的主体和镜头的温度监测中使用,可为相机主体和镜头温度控制的提供参数,通过高精度测温和PID控温,实现对相机工作环境温度实时控制,克服了传统热控方式的体积大、精度低、可靠性差缺点,非常适用于轻小型遥感相机。

Abstract:

In the orbiting environment, the thermal environment changing of optical system will affect the quality of Remote Sensing image,so it is very important to control thermal environment of Space Remote Sensing Camera for its normal work. For making sure the Space Camera working temperature is stably and reliably, this article gives a scheme that management function and thermal controlling module are controlled by DSP in space camera,which thermal controlling way apply a intergral -separation PID algorithm. It demonstrated that this means could be applied in engineering with laboratory equipment,and have a control accuracy of 0.3degree Celsius.This system overcome the low-precision characteristics of traditional temperature control.