Fault-adaptive carrier rocket intelligent control semi-physical simulation method

Abstract

The invention relates to a fault-adaptive carrier rocket intelligent control semi-physical simulation method, and belongs to the technical field of carrier rocket semi-physical simulation. The methodcomprises the steps: step 1, establishing a carrier rocket six-degree-of-freedom simulation model including a kinetic model, a mass model, a gravitational attraction model, an aerodynamic force model,an engine model and a sensor model; step 2, establishing a GNC model of the carrier rocket comprising a navigation model, a guidance model and a control model; step 3, establishing a real-time faultdetection and isolation model; judging whether the engine has a fault or not according to the real-time fault detection and isolation model; step 4, planning an optimal trajectory curve of the rocketafter any fault. According to the invention, the adaptability to rocket faults is realized, a semi-physical simulation system based on a carrier rocket six-degree-of-freedom simulation computer and highly integrated rocket-borne comprehensive electronics is built, so that the semi-physical simulation verification of rocket intelligent control in a fault state is realized.

Description

technical field [0001] The invention belongs to the technical field of semi-physical simulation of carrier rockets, and relates to a fault-adaptive intelligent control semi-physical simulation method of carrier rockets. Background technique [0002] In recent years, most of the failures of my country's launch vehicles have been caused by non-fatal failures such as abnormal engine thrust. If the rockets at that time had certain online intelligent processing capabilities, they could have avoided failures. Therefore, the demand for rocket intelligent control is increasing day by day, and it is necessary to accelerate the verification and engineering application of intelligent technology. [0003] The semi-physical simulation of the launch vehicle control system refers to a real-time simulation method that replaces part of the mathematical model with real hardware on the basis of digital simulation. It is the basis for ground verification of the GNC algorithm of the launch vehic...

AI Technical Summary

Problems solved by technology

Although the hardware-in-the-loop simulation method in this document takes into account the fault state, it is aimed at a single machine on the arrow and can only be configured offline. Considering the working conditions of the engine failure, the fault simulation has not been configured online.

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