The invention discloses a magnetic torquer driving circuit based on a constant current source, wherein the design of the driving circuit with the output current capable of being accurately controlledis provided, the magnetic torquer current capable of being quantitatively controlled is generated through the output voltage of a DA chip, and the actual control effect is expected to be monitored onthe basis that a closed-loop feedback circuit is provided; therefore, the design purposes of simple control and high reliability and safety are achieved. The driving circuit comprises a processor usedfor driving the DA chip to generate a constant current source driving voltage; the DA chip which is used for generating voltage required by output of a rear-end operational amplifier; an AD chip which is used for collecting voltage generated when the driving current flows through a feedback resistor; an operational amplifier chip which is used for generating voltage and current required by triodeamplification; a triode which is used for amplifying the current and driving the magnetic torquer; a diode and a bleeder resistor which are connected in series and are used for releasing the back electromotive force of the magnetic torquer; and a feedback resistor which is used for completing current-voltage conversion.

    本发明所述的基于恒流源的磁力矩器驱动电路,提出一种输出电流可准确控制的驱动电路设计,通过DA芯片输出电压产生可定量控制的磁力矩器电流,在提供闭环反馈电路的基础上以期对实际控制效果进行监控,从而实现控制简单、可靠性与安全性高的设计目的。驱动电路包括,处理器,用于驱动DA芯片产生恒流源驱动电压;DA芯片,用于产生后端运放输出所需要的电压;AD芯片,用于采集驱动电流流经反馈电阻所产生的电压;运放芯片,用于产生三极管放大所需要的电压和电流;三极管,用于放大电流,驱动磁力矩器;串联的二极管和泄放电阻,用于泄放磁力矩器的反向电动势;反馈电阻,用于完成电流电压转换。


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    Title :

    Magnetic torquer driving circuit based on constant current source


    Additional title:

    一种基于恒流源的磁力矩器驱动电路


    Contributors:
    YAO BAOSHI (author) / WANG LEI (author) / GUO XIAOHUA (author) / XUE SHUJUAN (author) / DONG XINGTAO (author)

    Publication date :

    2021-03-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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