【摘要】 轨姿控推进系统采用电磁阀控制内部流体通路的开启与断流,从而实现其重复启动和脉冲工作。在轨姿控推进系统快速稳定工作问题的研究中,电磁阀的性能对推进系统至关重要。针对轨姿控推进系统用电磁阀,基于电磁学及运动学等基本原理,建立了电磁阀动态数学模型,利用Matlab Simulink软件进行了动态仿真,得到了电磁阀动态响应特性;采用CFD软件对阀门内部流场进行数值模拟仿真,获得了精确的静态流阻特性,直观展现了电磁阀动态流场,为电磁阀的性能优化和轨姿控推进系统的性能提高提供依据。更多还原

【Abstract】 In the orbit and attitude control propulsion system, the solenoid valve controls the opening and closing of the fluid passage to achieve the goal of repeated start and pulse operation. It is essential to research the dynamic characteristic of the solenoid valve in the stability research of the orbit and attitude control propulsion system. The dynamic mathematical model of the solenoid valve was established based on fundamental principles of electromagnetism and kinematics. The simulation of the dynamic process was conducted by means of Matlab Simulink, by which the dynamic characteristics of the solenoid valve were obtained. CFD was used in the numerical simulation of the flow field in the solenoid valve and the accurate static flow resistance was acquired, which showed the movement state of the solenoid valve visually, and provided a theoretical reference for performance optimization of the solenoid valve and performance improvement of the orbit and attitude control propulsion system.更多还原