A satellite propulsion drive line power management system

Abstract

A power management system for a satellite impelling and driving circuit comprises an impelling subsystem controller, a first control signal driving circuit, a second control signal driving circuit, a whole satellite primary power supply, a first magnetic latching relay, a second magnetic latching relay, a satellite service subsystem, a satellite and rocket separating switch and an impelling and driving circuit. The impelling and driving circuit is managed mutually through the impelling subsystem controller and the satellite service subsystem. The two magnetic latching relays are connected in parallel, and the satellite service subsystem gives out four independent control instructions to control the magnetic latching relays. The satellite and rocket separating switch is controlled only through control signals. Control signals output by the impelling subsystem controller can be output only when satellite and rocket separating switch signals are valid. Requirements of power management of the satellite impelling and driving circuit are met, and safety, reliability and autonomy in using of the system are improved.

Description

Technical field [0001] The invention relates to a power management system, in particular to a power management system for driving circuits of a satellite propulsion system. Background technique [0002] The propulsion subsystem is one of the actuators for the attitude and position control of the spacecraft. The propellant is controlled by the thruster to eject the propellant through the output control signal of the propulsion drive line to realize the control of the attitude or position of the spacecraft. The propellant is one of the dangerous sources of the satellite. 1. Therefore, it is very important to ensure the safety and reliability of the propulsion subsystem. The power supply of the propulsion drive circuit is the primary power supply provided by the satellite. The power supply mode of the propulsion drive circuit is related to the safety and reliability of the propulsion subsystem. Therefore, the power management of the propulsion subsystem drive circuit is one of the i...

AI Technical Summary

Problems solved by technology

[0007] (1) The satellite-rocket separation switch is a passive switch of the satellite. It is in a closed state after the satellite is launched and the satellite-rocket is separated. The power supply of the propulsion drive line is directly controlled by the satellite-rocket separation switch. When the satellite-rocket separation switch and the satellite shell are short-circuited It will directly short-circuit the primary power supply of the whole star, causing the whole star to fail to work; in addition, if the star-rocket separation switch cannot be closed normally after the star-rocket is separated, it will not be able to provide power to the propulsion drive circuit, causing the propulsion subsystem to fail to work normally;

[0008] (2) The power supply of the propulsion drive line is directly controlled by the star service subsystem, and the autonomy is poor when the system is used. The power management of the propulsion drive line of the propulsion subsystem is completely dependent on the star service subsystem

In addition, when the power-on command or power-off command output by the star service subsystem fails, the propulsion system will not work normally;

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