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Method and device for testing whole-vehicle reliability of electric motor train units

A technology of EMUs and testing methods, applied in the direction of railway vehicle testing, etc., can solve problems such as insufficient work, achieve the effect of promoting quality, improving operation service quality, and promoting continuous improvement

Active Publication Date: 2010-04-28
CHINA ACADEMY OF RAILWAY SCI CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, for the reliability of EMUs, the majority of technicians have done a lot of work in the design and production stages, and achieved obvious results, but in terms of reliability testing of EMUs, the work is not enough

Method used

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  • Method and device for testing whole-vehicle reliability of electric motor train units
  • Method and device for testing whole-vehicle reliability of electric motor train units
  • Method and device for testing whole-vehicle reliability of electric motor train units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Figure 4 It is a flow chart of the method of Embodiment 1 of the whole vehicle reliability test of the electric train unit of the present invention. Wherein steps S401~S403 are the same as figure 1 Steps S101 to S103 shown are mainly used to judge whether the EMU has entered the sporadic failure period with stable quality. Only when the EMU is in the sporadic failure period and its failure rate is constant can the reliability test be performed. Then calculate the corresponding minimum cumulative travel amount according to the pre-stored confidence level, failure rate level and allowable number of failures, and generate a mapping relationship between the failure rate level, allowable failure times and the minimum accumulated travel amount. In this embodiment, the minimum cumulative walking distance is the minimum cumulative walking mileage, and the unit is 10 6 km.

[0052] Figure 5 It is the recommendation table of the failure rate level of the EMU according to th...

Embodiment 2

[0067] Figure 7 It is a flow chart of the method of Embodiment 2 of the reliability test of the whole electric train unit of the present invention. Wherein steps S701~S703 are the same as figure 1 Steps S101-S103 shown are mainly used to judge whether the EMU has entered the sporadic failure period with stable quality. Only when the electric locomotive is in the sporadic failure period and its failure rate is constant can the reliability test be performed. Then calculate the corresponding minimum cumulative travel amount according to the pre-stored confidence level, failure rate level and allowable number of failures, and generate a mapping relationship between the failure rate level, allowable failure times and the minimum accumulated travel amount. In this embodiment, the minimum cumulative walking distance is the minimum cumulative walking mileage, and the unit is 10 6 km. In this embodiment, the mapping relationship between the failure rate level and the failure rate l...

Embodiment 3

[0075] Figure 8 It is a structural flow chart of Embodiment 3 of the whole vehicle reliability test of the electric train unit of the present invention. In this embodiment, the EMU monitoring equipment 10 is used to provide the EMU vehicle reliability testing device with the fault information of the EMU vehicle, and is also used to provide the EMU fault category, Fault information such as accumulated mileage and fault occurrence times.

[0076] The database device 20 is used to pre-store parameter information such as confidence level, failure rate level, target failure rate level and allowable number of failures. These parameter values ​​can be adjusted according to the overall condition and actual quality of the EMU during actual application.

[0077] The reliability test device 30 for the complete vehicle of the electric multiple unit obtains the fault information such as the cumulative mileage, the number of failures and the parameter information such as the confidence le...

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Abstract

The invention discloses a method for testing reliability of whole electric motor train units. The method comprises: acquiring fault information of a whole electric motor train unit, including fault types and fault time; generating fault interval time of the fault types according to the fault time; judging whether the fault interval time obeys exponential distribution; calculating a corresponding minimum total running amount according to pre-stored confidence, failure-rate level and allowable fault frequency if so and generating mapping relationship between the failure-rate level, the allowable fault frequency and the minimum total running amount; acquiring the total running amount, fault types and fault frequency thereof of the whole electric motor train unit during test travel; and acquiring the failure-rate level corresponding to the fault type from the mapping relationship according to the total running amount and fault frequency during the test travel. The method can effectively test the reliability of the electric motor train units from a whole-vehicle perspective so as to promote the constant quality improvement of the electric motor train units and improve the quality of operation service.

Description

technical field [0001] The invention relates to the field of reliability engineering of rail transit, in particular to the field of reliability testing of complete electric train units. Background technique [0002] EMUs run at high speeds and have great safety responsibilities, and have strict requirements on reliability. In order to meet the requirements, it is necessary not only to put forward clear reliability indicators in the design, and strive to achieve the above indicators through strict control of production and manufacturing processes, but also to verify and assess the reliability indicators of EMUs in actual use , to determine whether it really meets the specified reliability requirements. [0003] At present, technical personnel have done a lot of work in the design and production stages for the reliability of EMUs, and achieved remarkable results. However, in terms of reliability testing of EMUs, the work is not enough. There are currently many types of EMUs ...

Claims

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Application Information

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IPC IPC(8): G01M17/08
Inventor 王华胜文礼李忠厚申恩福赵中喜
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD
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