卫星流体回路技术的动态热模型与仿真

Dynamical Thermal Model and Simulation of Satellite Fluid Loop

文章通过合理的分析与简化,建立了一个包括各热组件模型、受控对象模型以及控制系统模型的系统动态热模型,并建立了仿真程序,仿真结果表明:应用这一模型可以十分简便地计算卫星内部热源及空间外热流变化时的单相流体回路系统的温度变化趋势。该动态热模型还可用于对新型控制策略做进一步的研究,指导工程设计。

By means of lumped parameter method with physical analysis and logical simplification, a dynamical thermal model including thermal components model, controlled-object model, and control system model has been developed. The application of this dynamical thermal model can make the temperature changes of satellite single-phase fluid loop caused by either indoor heat source or outside space heat flux varieties become simple and convenient. The dynamical thermal model can satisfy the requirements of automatic controller. In addition, the dynamical thermal model can be used for new type control strategies investigation. The results can also be used to instruct the engineering design.