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Aircraft semi-physical simulation evaluation method

A semi-physical simulation and aircraft technology, applied in the field of simulation evaluation, can solve the problem of inability to accurately evaluate the semi-physical simulation effect and other problems

Pending Publication Date: 2021-03-19
BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide an evaluation method for the hardware-in-the-loop simulation of an aircraft to solve the problem that the prior art cannot accurately evaluate the effect of the hardware-in-the-loop simulation

Method used

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  • Aircraft semi-physical simulation evaluation method

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Embodiment 1

[0102] A specific embodiment of the present invention discloses a method for evaluating aircraft hardware-in-the-loop simulation, such as figure 1 shown, including the following steps:

[0103] S1. Obtain the simulation data of all uncertain output variables in the hardware-in-the-loop simulation of the aircraft;

[0104] S2. According to the above simulation data, construct the data distribution probability envelope of each uncertain output variable, and then determine the random uncertainty and probability uncertainty of each uncertain output variable;

[0105] S3. Dedimensionalize the random uncertainty and probability uncertainty of each of the above-mentioned uncertainty output variables, and construct a comprehensive uncertainty vector of the entire aircraft hardware-in-the-loop simulation;

[0106] S4. Determine the correlation coefficient of any two variables in all uncertain output variables, establish a correlation coefficient matrix, and then determine the weight c...

Embodiment 2

[0112] Optimizing on the basis of Embodiment 1, the uncertainty output variable in step S1 includes at least one of landing point deviation, aircraft attitude, angle of attack, sideslip angle, aircraft position, aircraft speed, and the like.

[0113] Specifically, the landing point deviation is the deviation between the landing point position of the aircraft obtained from the hardware-in-the-loop simulation test and the target position. Aircraft attitude includes pitch angle, yaw angle, roll angle, etc.; aircraft position includes altitude, lateral, and longitudinal positions. For simplicity of calculation, the attitude and position of the aircraft at the landing point of each hardware-in-the-loop simulation test can be taken.

[0114] The simulation data of all uncertain output variables are obtained through multiple hardware-in-the-loop simulations of the aircraft under the same set test conditions. The simulation data are obtained directly through half-physical simulation ...

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Abstract

The invention relates to an aircraft semi-physical simulation evaluation method, belongs to the technical field of simulation evaluation, and solves the problem that the semi-physical simulation effect cannot be accurately evaluated in the prior art. The method comprises the steps of obtaining simulation data of all uncertainty output variables; constructing a data distribution probability envelope of each uncertainty output variable according to the simulation data, and further determining corresponding random uncertainty and probability uncertainty; de-dimensionalizing the random uncertaintyand the probability uncertainty, and constructing a comprehensive uncertainty vector of semi-physical simulation of the whole aircraft; determining a weight coefficient of each element in the comprehensive uncertainty vector; according to the comprehensive uncertainty vector and the weight coefficient of each element in the comprehensive uncertainty vector, performing weighted averaging to obtaina comprehensive uncertainty measurement value of aircraft semi-physical simulation; and determining whether the semi-physical simulation result of the aircraft is credible or not according to whetherthe comprehensive uncertainty measurement value is within a preset threshold range or not.

Description

technical field [0001] The invention relates to the technical field of simulation evaluation, in particular to an evaluation method for aircraft hardware-in-the-loop simulation. Background technique [0002] In the process of aircraft hardware-in-the-loop simulation, due to the errors in the simulation equipment such as the simulation turntable, target simulator, load simulator, area array, and altimeter simulator, the accuracy of the entire simulation test is affected, which in turn affects the confidence of the simulation results. [0003] At present, in the existing technology, the uncertainty of hardware-in-the-loop simulation system without reference data is usually measured by standard deviation, but the standard deviation is sensitive to the sample size and has dimensions, and the uncertainties given by different sample sizes There are great differences in the performance measurement results, and it is inconvenient to judge how big is bad and how small is good. [00...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/20G06F111/08
CPCG06F30/15G06F30/20G06F2111/08
Inventor 耿化品闫英佟佳慧锁斌
Owner BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH