Method for quickly estimating thrust of aircraft on real-time basis

Abstract

The invention relates to a method for quickly estimating thrust of an aircraft on a real-time basis. Without relying on the information of aircraft-loaded sensor equipment and only relying on an external measurement data processing system, the parts that can be accurately modeled such as the gravity and the atmospheric drag of the aircraft are described with the physical model by constructing a hybrid dynamic model of the aircraft, the thrust part that cannot be accurately modeled is described with a mathematical model, and the online real-time estimation of the thrust of the aircraft is realized by the unscented filtering (UKF) estimation algorithm, which provides the test identification and accuracy evaluation of the aircraft with very important support.

Description

technical field [0001] The invention is applicable to the field of aerospace measurement and control, especially to the measurement and control systems of missiles and satellites. Background technique [0002] The thrust of the aircraft is the main driving force to keep the aircraft moving forward according to the design route. How to estimate the thrust value of the aircraft in real time during the flight of the aircraft is an important means of flight status evaluation such as test identification and flight safety control. Especially for non-cooperative aircraft, such as multi-stage missiles, real-time estimation of its thrust value can quickly obtain the acceleration curve, so as to determine the missile type according to the acceleration template, which is of great significance for missile early warning, air defense and anti-missile. Online fast estimation of aircraft thrust does not rely on telemetry sensors such as aircraft gyroscopes, but only constructs observation e...

AI Technical Summary

Problems solved by technology

Thrust models cannot be built for non-cooperative vehicles

In addition, for cooperative aircraft, when faced with high maneuverability, it is difficult to construct a thrust dynamics model by state equation modeling. Usually, the kinematics model describing the target motion trend is used as the state equation, which cannot output the thrust information of the aircraft in real time. The acceleration information of the target is obtained by means of the method, and the thrust estimation accuracy is greatly affected

[0004] Therefore, for the problem of online real-time estimation of aircraft thrust, there is no suitable comprehensive processing method

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