卫星推力器模拟器校准技术研究

Research on Satellite Thruster Simulator Calibration Technology

依据卫星姿轨控半实物仿真系统的技术要求,提出一种用于推力器模拟器的校准装置设计。校准装置采用网口通信模式模拟动力学计算机的喷气指令。校准装置以FPGA和单片机为控制核心,内置信号调理模块、高精度脉冲采集模块,数据解算模块等。该校准装置已经用于卫星姿轨控地面仿真测试的校准过程中,不仅能提升效率和质量,还能替代目前由多个设备组成的校准测试系统。有效降低成本,模拟推力器的全过程在线校准。

In this article,we studied a calibration device for thruster simulator,according to the technical requirements of the satellite attitude and orbit control hardware-in-the-loop simulation system.The calibration device uses the network port communication mode to simulate the jet command of the dynamic computer.FPGA and single-chip microcomputer are the control core of the calibration device.In addition,the calibration device includes a signal conditioning module,a high-precision pulse acquisition module,a data solving module,etc.The calibration device has been used in the calibration process of satellite attitude and orbit control ground simulation test.It can not only improve efficiency and quality,but also replace the current calibration test system composed of multiple devices,effectively reduce costs,and simulate the entire process of thrusters online calibration.