To improve the thermal control adaptability of spacecraft

a satellite single-phase fluid loop thermal control technology based on self-driven thermostatic valve with sensitive wax was presented. Then

two kinds of improved control strategies were proposed. One was the self-driven thermostatic valve with sensitive wax as the controlling object

the other was the combination control with mechanical pump and self-driven thermostatic valve with sensitive wax as the controlling objects. The mathematical model of self-driven thermostatic valve with sensitive wax

heat load

radiator and other components was built by lumped parameter method

temperature dynamic performance of this thermal control system was calculated by numerical simulation method under periodic disturbance of outer heat flux and step disturbance of heat consumption of electrical equipment when a satellite in the orbit. Result shows that

the thermal control strategy with combination of mechanical pump and self-driven thermostatic valve with sensitive wax can realize the precise thermal control of loop

which not only take the advantages of self-driven thermostatic valve to achieve the reliability requirements of the system and reduce energy consumption

but also overcome the disadvantage of self-driven thermostatic valve with sensitive wax

such as temperature limit and steady-state error.