A Power Supply Switching Circuit for Multistage Aerospace Vehicle

Abstract

A power supply switching circuit for multi-stage aerospace vehicles. Aiming at the problems of single and double battery power supply in the electric steering gear system, a switching circuit scheme for the control power and power power supply of the electric steering gear system is provided. The circuit is mainly composed of a filter Circuit, transfer circuit, input adjustment circuit and select output circuit consists of four parts. Its working principle is: when the electric steering gear system does not receive the aircraft inter-stage separation command voltage FL, the electric steering gear system control power +28V is provided by the aircraft control battery EJ28; after the electric steering gear system receives the aircraft inter-stage separation command voltage FL The control power of the electric steering gear system is jointly provided by the aircraft control battery EJ28 and the steering gear battery YJ28. After the power transfer is completed, the trigger signal and the output signal of the input adjustment circuit are operated, and the result is output to the aircraft control system; The control power and power power of part of the electric steering gear system are provided by the steering gear 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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