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

An aircraft and thrust technology, which is applied in the field of measurement and control systems of missiles and satellites, can solve problems such as the influence of thrust estimation accuracy, the difficulty of constructing thrust dynamics models with equation of state modeling, and the inability to construct thrust models, so as to achieve the effect of improving accuracy.

Inactive Publication Date: 2019-05-21
HUNAN INT ECONOMICS UNIV
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  • Abstract
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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

Method used

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

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Embodiment Construction

[0119] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0120] The simulation parameters are given as follows:

[0121] 1) There are four ground radar stations, and the standard deviation of measurement random error is: slant distance 1m, azimuth angle 20 arcseconds, elevation angle 20 arcseconds, slope distance change rate 1cm / s; random error obeys normal distribution.

[0122] 2) The aircraft is accelerated by a single-stage rocket, and the thrust ends at 200 seconds, and the thrust simulation considers the quality change factor;

[0123] 3) The trajectory simulation of the aircraft considers the J2 order of the earth's non-spherical gr...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06G01M9/08
Inventor 刘靖潘晓刚矫媛媛程立正邓益军任勇
Owner HUNAN INT ECONOMICS UNIV
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