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Train operation comfort degree predication method based on bogie acceleration

A prediction method and acceleration technology, applied in railway vehicle testing, etc., can solve the problems of low practicability and poor real-time performance, and achieve the effects of low cost, high device reliability, and strong detection accuracy

Active Publication Date: 2013-07-10
BEIJING JIAOTONG UNIV
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Problems solved by technology

However, the existing technical methods are limited to the evaluation and calculation of comfort under given conditions and operating conditions. If the external conditions change and interfere with the train vibration system, the accuracy of the built model needs to be reconsidered. and rationality, so the real-time performance is poor and the practicability is not high

Method used

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  • Train operation comfort degree predication method based on bogie acceleration
  • Train operation comfort degree predication method based on bogie acceleration
  • Train operation comfort degree predication method based on bogie acceleration

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Embodiment Construction

[0024] 1. Data acquisition

[0025] like figure 1 As shown, in the dynamics simulation software SIMPACK, the vehicle model is established through the actual structural parameters of urban rail trains. Acceleration sensors are installed at the diagonal positions of the front and rear bogies respectively to measure the lateral and vertical accelerations of the bogies at the corresponding positions during the train running; in order to simplify the operating conditions, the U.S. fifth-level track spectrum is used for track excitation input, and the simulation time is defined is 45 seconds, the sampling frequency is 500Hz and the train running speed is 80KM / h at a constant speed. Therefore, the longitudinal acceleration of the train running in the X direction is a X Always zero. like Figure 2-3 As shown, the bogie lateral and vertical acceleration data collected by the simulation run in SIMPACK are connected to MATLAB / Simulink through the SIMAT module interface to realize pre...

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Abstract

The invention relates to a train operation comfort degree predication method based on bogie acceleration. A linear relation of train body center acceleration and bogie acceleration data is obtained through measurement of the bogie acceleration data and use of technical methods such as principal component analysis (PCA) and partial least squares (PLS), and therefore a comfort degree value is calculated. The train operation comfort degree prediction method based on the bogie acceleration can be used for on-passage real-time detection evaluation, detection data are collected in a real-time mode according to various operation conditions, and calculation and evaluation are carried out on current comfort degrees of the operation conditions.

Description

technical field [0001] The invention belongs to the technical field of railway transportation, in particular to a method for predicting train running comfort based on bogie acceleration. Background technique [0002] With the development of science and technology, the train has become an ideal means of transportation for people to travel due to its advantages of safety, high speed, punctuality, energy saving, environmental protection, and large capacity. With the increasing demand of passengers for train ride comfort, ride comfort has become an important factor affecting train design and ensuring the passenger transport market. Passenger comfort is also a basic indicator for evaluating train operation status. UIC513 "Evaluation Criteria for Vibration Comfort of Passengers in Railway Vehicles" and GB5595-85 Railway Vehicle Dynamic Performance Evaluation and Test Appraisal Specifications provide the test conditions, basic algorithms and judgment criteria for comfort. Accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/08
Inventor 魏秀琨汪煜婷贾利民秦勇刘光武袁敏正杨林芝刘琰郭淑萍林帅郭昆
Owner BEIJING JIAOTONG UNIV
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