The invention provides a satellite-borne thruster constant-current driving control circuit suitable for wide input voltage. The satellite-borne thruster constant-current driving control circuit comprises a thruster control module, a PMOS (P-channel Metal Oxide Semiconductor) tube driving module, a differential isolation amplification module, a state acquisition module, a current feedback comparison module and an NMOS (N-channel Metal Oxide Semiconductor) tube driving module. Thruster driving current is input into the differential isolation amplifying circuit in a voltage signal mode through the current sampling resistor, current signals are converted into voltage signals, the amplified voltage signals are compared with reference voltage, real-time on-off of an NMOS tube is controlled, and therefore precise and stable control over thruster load current is achieved. The satellite-borne thruster solves the problem that the satellite-borne thruster cannot adaptively and normally work under the wide input satellite bus voltage (28V-100V). The control and state acquisition of the wide-input satellite bus voltage (28V-100V) satellite-borne thruster are realized, the circuit application is flexible, the bus adaptability is high, the response speed is high, and the reliability is high.
本发明提供了本发明公开了一种适用于宽输入电压的星载推力器恒流驱动控制电路,包括:推力器控制模块、PMOS管驱动模块、差分隔离放大模块、状态采集模块、电流反馈比较模块和NMOS管驱动模块。推力器驱动电流经过电流采样电阻以电压信号方式输入至差分隔离放大电路,实现了电流信号转换成电压信号,放大后的电压信号与基准电压进行比较,控制NMOS管的实时通断,从而实现推力器负载电流精确稳定的控制。本发明解决了星载推力器在宽输入卫星母线电压(28V~100V)下无法自适应正常工作的问题。实现了宽输入卫星母线电压(28V~100V)星载推力器的控制及状态采集,电路应用灵活,母线适应能力强,响应速度快,可靠性高。
Satellite-borne thruster constant-current driving control circuit suitable for wide input voltage
适用于宽输入电压的星载推力器恒流驱动控制电路
24.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | B64G Raumfahrt , COSMONAUTICS / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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