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Real-time diagnosis method for relaxation fault of transmission system

A transmission system, real-time diagnosis technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve the problems of false alarms and low diagnostic performance indicators, and achieve the effect of high diagnostic performance indicators

Pending Publication Date: 2022-05-24
HUZHOU CRRC SPECIAL ELECTRICAL EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0013] To sum up, the diagnostic methods in the prior art have the disadvantages that the diagnostic performance index is not high, and it is prone to false fault alarms under abnormal working conditions such as speed sensor failure and wheel set idling.

Method used

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  • Real-time diagnosis method for relaxation fault of transmission system
  • Real-time diagnosis method for relaxation fault of transmission system
  • Real-time diagnosis method for relaxation fault of transmission system

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Embodiment Construction

[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0054] The invention discloses a real-time diagnosis method for transmission system slack faults. Based on the premise that various characteristic modes corresponding to transmission system slack faults are related to the variation rules of multiple characteristic indexes within a certain period of time, the problem of characteristic mode recognition is converted into multiple The variable time series matching problem; and based on the DTW algorithm, time warping and distance measurement are combined, and dynamic programming technology is used to compare two modes of different sizes to solve the above-mentioned problem of time scale asynchrony, so as to realize the characteristic mode of transmission system relaxation fault real-time diagnosis.

[0055] further combined with image 3 , which specifically includes the following steps:

[0056] In the first s...

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Abstract

The invention discloses a real-time diagnosis method for an achalasia fault of a transmission system, and the method comprises the steps: converting a feature mode recognition problem into a multivariable time sequence matching problem based on the premise that various feature modes corresponding to the achalasia fault of the transmission system are related to a change rule of a plurality of feature indexes in a certain time period; based on a DTW algorithm, time warping and distance measurement are combined, a dynamic planning technology is adopted, and two modes with different sizes are compared, so that the problem that the time scales are not synchronous is solved, and real-time diagnosis of the relaxed fault characteristic mode of the transmission system is achieved. The diagnosis method has the advantages that the diagnosis performance index is higher, and fault misinformation is not prone to occurring under related abnormal working conditions such as speed sensor faults and wheel set idling.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of a rail transit transmission system and other similar transmission systems, in particular to a real-time diagnosis method for a relaxation fault of a transmission system. Background technique [0002] At present, in the actual application of the rail transit transmission system, when there are bad conditions such as rain and snow or when the vehicle passes through the turnout at high speed, the adhesion of the rail surface will decrease, and the train is prone to idling. At this time, the traction motor corresponding to the train The speed can increase significantly in a short period of time, causing the transmission system's fault diagnosis module to falsely report a slack fault. In addition, when the speed signal increases the sampling pulse of the speed sensor or a specific fault due to electromagnetic interference, etc., it will also lead to an abnormal increase in the speed signal v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0243G05B2219/24065
Inventor 刘可安李学明黄庆倪大成徐绍龙吕阳董平姚超熊琦玮彭鸿基郑良广
Owner HUZHOU CRRC SPECIAL ELECTRICAL EQUIP CO LTD
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