CN106777518B - A kind of driving source discrimination method for rail control motor power - Google Patents

A kind of driving source discrimination method for rail control motor power Download PDF

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Publication number
CN106777518B
CN106777518B CN201611044782.4A CN201611044782A CN106777518B CN 106777518 B CN106777518 B CN 106777518B CN 201611044782 A CN201611044782 A CN 201611044782A CN 106777518 B CN106777518 B CN 106777518B
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driving source
module
motor power
rail control
frequency
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CN106777518A (en
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姚洪伟
倪晓峰
张艳梅
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Beijing Institute of Electronic System Engineering
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Beijing Institute of Electronic System Engineering
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    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design

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  • Pure & Applied Mathematics (AREA)
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  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Control Of Electric Motors In General (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

The invention discloses a kind of driving source discrimination methods for rail control motor power, the method of the present invention constructs the driving source identification system for rail control motor power first, constructed system includes: firing test data analysis module, frequency information complementary module and shutdown property verification module, engine solo test run data are analyzed by firing test data analysis module, band information needed for frequency information complementary module supplements driving source, shutdown property verification module complete shut-down-phase motor power property verification.The method of the present invention comprehensive utilization engines ground firing test data, blocker suspension test data, structural modeling analysis are as a result, it is possible to effectively improve the accuracy of driving source identification result, to ensure that resulting vibration indicates that the precision of result lays the foundation.

Description

A kind of driving source discrimination method for rail control motor power
Technical field
The present invention relates to a kind of driving source discrimination method, especially a kind of driving source for rail control motor power is distinguished Knowledge method.
Background technique
Driving source identification at present is more mature, can be according to driving source test data, and the driving source for providing time domain and frequency domain is defeated Model out has mature method for driving source analysis, control errors, time-frequency domain conversion.But partial activation source sampling frequency It is low, cause it is insufficient to identification result band segment information, it is larger with real load characteristic deviation, there is no general effective side to this Method.
For rail control engine, driving source identification need to be completed according to the thrust data of ground run.The survey of ground run Object, such as thrust, specific impulse, mixing ratio are tried, it is of less demanding to sample frequency, generally within the scope of 500~1000Hz.And from need It asks and says, all in 10~2000Hz, corresponding data sampling frequency is needed in 5000Hz or more general airborne vibration frequency range；While by Low in sample frequency, test data can not reflect thrust variation process in shutdown process, i.e. the thrust variation rule of shutdown process It is indefinite.
Summary of the invention
It is an object of that present invention to provide a kind of driving source discrimination methods for rail control motor power, solve tradition side Method only relies on rail control engines ground firing test data, and sample frequency is low, the indefinite problem of switching on and shutting down thrust performance.
A kind of specific steps of the driving source discrimination method for rail control motor power are as follows:
First step building is directed to the driving source identification system of rail control motor power
For the driving source identification system of rail control motor power, comprising: firing test data analysis module, frequency information are mended Mold filling block and shutdown property verification module.It is described:
The function of firing test data analysis module are as follows: engine solo test run data are analyzed；
The function of frequency information complementary module are as follows: band information needed for supplement driving source；
The function for property verification module of shutting down are as follows: complete shut-down-phase motor power property verification.
Second step firing test data analysis module analyzes engine solo test run data
Firing test data analysis module analyzes the thrust data of rail control engine solo test run, to complete to motivate Source tentatively recognizes.When thrust sample frequency is lower than 5000Hz, then high-frequency information is supplemented；When can not clearly start in thrust curve When machine open and close machine thrust performance, then engine open and close machine thrust performance is supplemented.
Band information needed for third step frequency information complementary module supplements driving source
Frequency information complementary module establishes structure TRANSFER MODEL, then in conjunction with interception according to the Nomenclature Composition and Structure of Complexes of blocker The vibration data of device ground suspension test, it is anti-to release excitation source model.
Since the sample frequency of ground suspension test is higher, comprising band information needed for driving source model, therefore frequency Information supplement module supplements the high fdrequency component of the preliminary identification result of driving source.
The blocker vibratory response spectral power matrix [S surveyed in suspension testyy] and exciting power spectrum matrix [Sxx] just like Lower relationship:
[Syy]=[H]*[Sxx][H]T (1)
Wherein, [H] is the frequency response function matrix between each excitation point and each response point, and " * " is indicated to the Matrix Calculating Complex conjugate.
Frequency information complementary module carries out conversion of inverting to formula (1):
[Sxx]=[H]+*[Syy][H]+T (2)
Wherein, subscript+expression is to Matrix Calculating Moore-Penrose generalized inverse.
To obtain frequency domain identification result of the rail control engine as driving source.Frequency information complementary module is according to preliminary The supplement demand of identification result, the excitation identification result that this step is obtained is from sample frequency 0.5 to the high frequency of 2000Hz range Component adds in preliminary identification result.
4th step shutdown property verification module completes shut-down-phase motor power property verification
Property verification module of shutting down forms the hypothesis of a variety of thrust variation rules according to engine operating characteristics.Then it presses According to the thrust variation rule of prediction, according to having supplemented corresponding exciting power spectrum matrix in the formula (1) obtained after high fdrequency component, The frequency response function matrix in formula (1) is established according to blocker model via dynamical response, completes blocker vibratory response point Analysis.
Property verification module of shutting down is by the vibration data of all Response Analysis results and blocker ground suspension test It compares, filters out optimal result, so that it is determined that shut-down-phase motor power characteristic.
So far, the driving source completed for rail control motor power finally recognizes.
The method of the present invention comprehensively utilizes engines ground firing test data, blocker suspension test data, structural modeling analysis As a result, it is possible to the accuracy of driving source identification result be effectively improved, to ensure that resulting vibration indicates that the precision of result lays the foundation.
Specific embodiment
A kind of specific steps of the driving source discrimination method for rail control motor power are as follows:
First step building is directed to the driving source identification system of rail control motor power
For the driving source identification system of rail control motor power, comprising: firing test data analysis module, frequency information are mended Mold filling block and shutdown property verification module.It is described:
The function of firing test data analysis module are as follows: engine solo test run data are analyzed；
The function of frequency information complementary module are as follows: band information needed for supplement driving source；
The function for property verification module of shutting down are as follows: complete shut-down-phase motor power property verification.
Second step firing test data analysis module analyzes engine solo test run data
Firing test data analysis module analyzes the thrust data of rail control engine solo test run, to complete to motivate Source tentatively recognizes.When thrust sample frequency is lower than 5000Hz, then high-frequency information is supplemented；When can not clearly start in thrust curve When machine open and close machine thrust performance, then engine open and close machine thrust performance is supplemented.
Band information needed for third step frequency information complementary module supplements driving source
Frequency information complementary module establishes structure TRANSFER MODEL, then in conjunction with interception according to the Nomenclature Composition and Structure of Complexes of blocker The vibration data of device ground suspension test, it is anti-to release excitation source model.
Since the sample frequency of ground suspension test is higher, comprising band information needed for driving source model, therefore frequency Information supplement module supplements the high fdrequency component of the preliminary identification result of driving source.
The blocker vibratory response spectral power matrix [S surveyed in suspension testyy] and exciting power spectrum matrix [Sxx] just like Lower relationship:
[Syy]=[H]*[Sxx][H]T (1)
Wherein, [H] is the frequency response function matrix between each excitation point and each response point, and " * " is indicated to the Matrix Calculating Complex conjugate.
Frequency information complementary module carries out conversion of inverting to formula (1):
[Sxx]=[H]+*[Syy][H]+T (2)
Wherein, subscript+expression is to Matrix Calculating Moore-Penrose generalized inverse.
To obtain frequency domain identification result of the rail control engine as driving source.Frequency information complementary module is according to preliminary The supplement demand of identification result, the excitation identification result that this step is obtained is from sample frequency 0.5 to the high frequency of 2000Hz range Component adds in preliminary identification result.
4th step shutdown property verification module completes shut-down-phase motor power property verification
Property verification module of shutting down forms the hypothesis of a variety of thrust variation rules according to engine operating characteristics.Then it presses According to the thrust variation rule of prediction, according to having supplemented corresponding exciting power spectrum matrix in the formula (1) obtained after high fdrequency component, The frequency response function matrix in formula (1) is established according to blocker model via dynamical response, completes blocker vibratory response point Analysis.
Property verification module of shutting down is by the vibration data of all Response Analysis results and blocker ground suspension test It compares, filters out optimal result, so that it is determined that shut-down-phase motor power characteristic.So far, it completes for rail control The driving source of motor power finally recognizes.

Claims (1)

1. a kind of driving source discrimination method for rail control motor power, it is characterised in that specific steps are as follows:
First step building is directed to the driving source identification system of rail control motor power
For the driving source identification system of rail control motor power, comprising: firing test data analysis module, frequency information supplement mould Block and shutdown property verification module；It is described:
The function of firing test data analysis module are as follows: engine solo test run data are analyzed；
The function of frequency information complementary module are as follows: band information needed for supplement driving source；
The function for property verification module of shutting down are as follows: complete shut-down-phase motor power property verification；
Second step firing test data analysis module analyzes engine solo test run data
Firing test data analysis module analyzes the thrust data of rail control engine solo test run, thus at the beginning of completing driving source Step identification；When thrust sample frequency is lower than 5000Hz, then high-frequency information is supplemented；When engine can not be specified in thrust curve When open and close machine thrust performance, then engine open and close machine thrust performance is supplemented；
Band information needed for third step frequency information complementary module supplements driving source
Frequency information complementary module establishes structure TRANSFER MODEL, then in conjunction with blocker according to the Nomenclature Composition and Structure of Complexes of blocker The vibration data of face suspension test, it is anti-to release excitation source model；
Since the sample frequency of ground suspension test is higher, comprising band information needed for driving source model, therefore frequency information Complementary module supplements the high fdrequency component of the preliminary identification result of driving source；
The blocker vibratory response spectral power matrix [S surveyed in suspension testyy] and exciting power spectrum matrix [Sxx] just like ShiShimonoseki System:
[Syy]=[H]*[Sxx][H]T (1)
Wherein, [H] is the frequency response function matrix between each excitation point and each response point, and " * " indicates total again to the Matrix Calculating Yoke；
Frequency information complementary module carries out conversion of inverting to formula (1):
[Sxx]=[H]+*[Syy][H]+T (2)
Wherein, subscript+expression is to Matrix Calculating Moore-Penrose generalized inverse；
To obtain frequency domain identification result of the rail control engine as driving source, frequency information complementary module is according to preliminary identification As a result supplement demand, the excitation identification result that this step is obtained is from sample frequency 0.5 to the high fdrequency component of 2000Hz range It adds in preliminary identification result；
4th step shutdown property verification module completes shut-down-phase motor power property verification
Property verification module of shutting down forms the hypothesis of a variety of thrust variation rules according to engine operating characteristics；Then according to pre- The thrust variation rule of survey, according to having supplemented corresponding exciting power spectrum matrix in the formula (1) obtained after high fdrequency component, according to Blocker model via dynamical response establishes the frequency response function matrix in formula (1), completes blocker Response Analysis；
Property verification module of shutting down carries out the vibration data of all Response Analysis results and blocker ground suspension test Comparison, filters out optimal result, so that it is determined that shut-down-phase motor power characteristic；
So far, the driving source completed for rail control motor power finally recognizes.
CN201611044782.4A 2016-11-24 2016-11-24 A kind of driving source discrimination method for rail control motor power Active CN106777518B (en)

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CN107657109B (en) * 2017-09-22 2020-02-11 哈尔滨工业大学 Supersonic aircraft transonic velocity section pulsating pressure frequency domain identification method
CN107885949B (en) * 2017-11-24 2020-11-24 上海机电工程研究所 Switch type attitude and orbit control direct force engine thrust modeling method
CN111046570B (en) * 2019-12-18 2023-09-12 北京电子工程总体研究所 Turbulence model for numerical simulation of vortex-induced vibration of rigid cylinder

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