Power source switching circuit for multistage aerospace craft

Abstract

Provided is a power source switching circuit for a multistage aerospace craft. Aiming at the problems existing in single-battery and double-battery power supply of an electric steering engine system, an electric steering engine system control electricity and power electricity supply switching circuit scheme is provided, and the circuit is mainly composed of a filter circuit, an electricity switching circuit, an input regulating circuit and a selective output circuit. According to the operating principle, when the electric steering engine system does not receive a craft stage separation command voltage FL, electric steering engine system control electricity +28V is provided by a craft control battery EJ28; after the electric steering engine system receives the craft stage separation command voltage FL, the electric steering engine system control electricity is provided by the craft control battery EJ28 and a steering engine battery YJ28 together; after electric switching is completed, AND-operation is carried out on a trigger signal and an output signal of the input regulating circuit, and a result is output to a craft control system; after stage separation, the electric steering engine system control electricity and power electricity on the separation part are both provided by the steering engine battery YJ28.

Description

technical field [0001] The invention relates to a power switching circuit for a multi-stage aerospace vehicle, and belongs to the technical field of power switching circuits applied to multi-stage aerospace vehicles. Background technique [0002] As the actuator of the aircraft, the electric steering gear system is typically used to control the deflection of the rudder surface of the aircraft. The hardware circuit of the electric steering gear system is mainly divided into logic control and power drive parts. Generally, the aircraft uses dual batteries to power the two parts of the circuit, but for some aircraft that require multiple sets of electric steering gear systems, such a power supply method will increase the weight, volume, cost, etc. of the power supply system; while using a single battery for power supply, although It can solve the above problems, but when the electric steering gear system completes actions that consume a large amount of current such as start-up c...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the disadvantages of increased system volume and weight caused by dual-battery power supply and increased cost, and to provide a power switching circuit for multi-stage aerospace vehicles. The function of this circuit is: multi-stage aircraft Before the separation between the stages, the control power of the electric steering gear system is powered by the aircraft control battery. After receiving the separation between the aircraft stages, the control power of the electric steering gear system is powered by the steering gear battery.

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