Online self-adaptive guidance algorithm for active section of multi-stage boost-glide vehicle

Abstract

The invention relates to an online self-adaptive guidance algorithm for an active section of a multi-stage boost-glide vehicle. The online self-adaptive guidance algorithm adopts a brand-new gliding time online numerical prediction iterative algorithm to solve gliding ignition time; in a powered flight stage, on the basis of a predicted reference flight path, an online model prediction static programming algorithm with terminal multi-constraint and flight process constraint capabilities is adopted for calculating a guidance instruction meeting a terminal multi-constraint condition and a flightprocess constraint at the same time according to a quadratic index of a minimum correction angle; an online closed-loop self-adaptive guidance algorithm composed of a model prediction static programming algorithm is adopted to output a closed-loop instruction in each guidance period; and the multi-stage ''boost''-''glide''-''boost'' vehicles are taken as research objects, depletion shutdown solidengines are adopted, a low trajectory mode is adopted for an active section flight trajectory, and the active section flight trajectory comprises a first-stage powered flight section, an unpowered sliding section, a second-stage powerd flight section and a third-stage powered flight section. The online self-adaptive guidance algorithm has the advantages of high flexibility and high reliability.

Description

technical field [0001] The invention belongs to an adaptive guidance method, in particular to an online self-adaptive guidance algorithm for the active section of a multi-stage boost gliding aircraft. Background technique [0002] The active flight of the multi-stage boost gliding vehicle in the atmosphere is an important stage. During the actual flight, the guidance law in the rocket-borne computer is used to guide the vehicle from the current flight state to the terminal target state. The main function of the guidance law is to output program angle commands or other command information in real time according to the current flight status of the aircraft. At present, the requirements of the active segment guidance task of the multi-stage boost-glide vehicle have been further improved, and it is necessary to meet the terminal constraints (the handover conditions from the active segment to the glide segment, such as speed constraints, altitude constraints) and process constrai...

AI Technical Summary

Problems solved by technology

The above method does not study the adaptive problem of gliding time. Usually, the off-line designed flight sequence is u

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