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Keywords: technical state monitoring, light rail vehicle, tramway, track wear, vehicle dynamics, monitoring system.

Summary

Light rail systems now have their great revival in many European cities as being a rival to passenger cars. This increasing trend requires suitable operation and maintenance standards for both vehicle and track. Nevertheless it appears that in many European countries there are no widely accepted guidelines to specifically aid in the determination of ride comfort, stability or derailment criteria for light rail vehicles. Furthermore tramway operators in Eastern European countries do not perform any regular track state monitoring.

This paper describes the main concept of the on-board technical state monitoring system for light rail vehicles and tracks. Functional requirements, assumptions and procedures are described, as well as the complete on-board data acquisition unit concept with all necessary transducers, including which number, function and technical parameters were optimized during the research phase of the project.

The basic requirements assumed for the system are the following:

the monitoring process is realised on and from the vehicle, during its normal operation;
technical state monitoring is based mainly on the acceleration signal analysis;
all events are evaluated qualitatively;
the complete system should be as inexpensive as possible, so it can be mounted on each tram in the city; and
the structure of the system must be compatible with present on board systems in the selected tramways.

All important system requirements were developed on the basis of the present state and knowledge analysis, followed by many numerical simulations for different light rail vehicles types with selected faults cases, under different ride parameters, such as speed, vehicle load, track type etc. The proposed system realises an on-line monitoring of the following vehicle and track parameters:

suspension elements wear;
wheel surface wear;
ride comfort, stability, and safety against derailment; as well as
track geometry and track wear.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 98 PROCEEDINGS OF THE FIRST INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 125 Technical State Monitoring Systems for Light Rail Vehicles and Tracks B. Firlik¹ and A. Chudzikiewicz² ¹Department of Rail Vehicles, Poznan University of Technology, Poland ²Faculty of Transport, Warsaw University of Technology, Poland doi:10.4203/ccp.98.125 purchase the full-text of this paper Full Bibliographic Reference for this paper B. Firlik, A. Chudzikiewicz, "Technical State Monitoring Systems for Light Rail Vehicles and Tracks", in J. Pombo, (Editor), "Proceedings of the First International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 125, 2012. doi:10.4203/ccp.98.125 Keywords: technical state monitoring, light rail vehicle, tramway, track wear, vehicle dynamics, monitoring system. Summary Light rail systems now have their great revival in many European cities as being a rival to passenger cars. This increasing trend requires suitable operation and maintenance standards for both vehicle and track. Nevertheless it appears that in many European countries there are no widely accepted guidelines to specifically aid in the determination of ride comfort, stability or derailment criteria for light rail vehicles. Furthermore tramway operators in Eastern European countries do not perform any regular track state monitoring. This paper describes the main concept of the on-board technical state monitoring system for light rail vehicles and tracks. Functional requirements, assumptions and procedures are described, as well as the complete on-board data acquisition unit concept with all necessary transducers, including which number, function and technical parameters were optimized during the research phase of the project. The basic requirements assumed for the system are the following: the monitoring process is realised on and from the vehicle, during its normal operation; technical state monitoring is based mainly on the acceleration signal analysis; all events are evaluated qualitatively; the complete system should be as inexpensive as possible, so it can be mounted on each tram in the city; and the structure of the system must be compatible with present on board systems in the selected tramways. All important system requirements were developed on the basis of the present state and knowledge analysis, followed by many numerical simulations for different light rail vehicles types with selected faults cases, under different ride parameters, such as speed, vehicle load, track type etc. The proposed system realises an on-line monitoring of the following vehicle and track parameters: suspension elements wear; wheel surface wear; ride comfort, stability, and safety against derailment; as well as track geometry and track wear. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £110 +P&P)
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