Multi-engine parallel rocket control device with power redundancy capability and method for controlling multi-engine parallel rocket using control device

Abstract

The invention provides a multi-engine parallel rocket control device with power redundancy capability. The multi-engine parallel rocket control device includes detection equipment, computing equipment and execution equipment, wherein the detection equipment is used for collecting core working parameters of engines; the computing equipment performs intelligent calculation and analysis on the collected parameters based on a fault model, according to a corresponding intelligent algorithm, engine fault diagnosis results are given, and a corresponding control strategy is selected according to the diagnosis results; and the execution device receives instructions given by the computing equipment, and the corresponding control strategy is executed. In addition, the invention further provides a method for controlling a multi-engine parallel rocket using the control device.

Description

technical field [0001] The application relates to a multi-engine parallel rocket control device with power redundancy capability, which belongs to the technical field of launch vehicle control. Background technique [0002] The liquid rocket engine is the core system of the liquid rocket. It is highly complex and has a harsh working environment. It is the system most prone to failure during the flight of the rocket. Among them, engine failure can account for more than 50%. [0003] In order to solve the problem of insufficient flight reliability of the launch vehicle caused by engine failure, researchers mainly tried from two aspects: one is to improve the reliability of a single engine; the other is to achieve redundant design through parallel connection of multiple engines. At present, although efforts have been made to improve the reliability of a single engine at home and abroad, the effect is limited due to various factors such as design methods, test times, material r...

AI Technical Summary

Problems solved by technology

[0018] However, due to the complex structure of the liquid rocket engine, various fault manifestations, and strong nonlinearity between the multi-coupling of the fault diversity and the engine, it brings great difficulties to the fault diagnosis of the liquid rocket engine, and the fault diagnosis requires comprehensive multidisciplinary technology theory

In addition, after the engine fails, a series of its characteristics will deviate from the design standard state, and the existing control strategy must be complexly reconstructed

Therefore, as of now, the high-reliability redundant design of multi-engine parallel rockets is still a difficult problem

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