A hybrid method for the integration between an instrumented wheelset and the measure of the deflection of the primary suspension

Egidio Di Gialleonardo, Stefano Bionda, Marco Bocciolone, Francesco Braghin

Abstract


Different methods are available to provide an estimation of the force exchanged at wheel-rail interface. Focussing on on-board systems generally the instrumented wheelset is the most used. Strain gauge bridges are typically applied on the axle and/or the wheel web to infer wheel-rail interaction forces generating a deformation field on the wheelset. It can be proved that the estimation of the lateral and vertical components of the contact forces on a generic wheelset results in a problem where six unknowns should be defined taking into account that the position of the contact points (even if unique) on the wheel affects the deformations measured both on the axle and/or on the wheel itself. Thus, at least six independent quantities must be measured in order to obtain a correct estimation of the contact force components. Other approaches rely on the instrumentation of the primary suspension in order to estimate at least the vertical component of the contact force. A hybrid method, that is combining the typical instrumented wheelset with the measurement of the deflection of the primary suspension, can be used if, for different reason, it is not possible to obtain six independent measurements related to the deformation of the wheelset. In the paper this hybrid approach will be presented as a means to overcome some problems in the instrumentation of the wheelset. The effectiveness of the proposed solution will be proved both on static and dynamic tests performed on a dedicated test-rig used for the calibration of the instrumented wheelset but also considering in-line test.


Full Text:

PDF

References


Weston P, Roberts C, Yeo G, Stewart E. Perspectives on railway track geometry condition monitoring from in-service railway vehicles. Vehicle System Dynamics 2015, 53(7): 1063–1091.

Weston PF, Ling CS, Roberts C, Goodman CJ, Li P, Goodall RM. Monitoring vertical track irregularity from in-service railway vehicles. Proceedings of the Institu-tion of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 2007; 221(1):75–88.

Weston PF, Ling CS, Goodman CJ, Roberts C, Li P, Goodall RM. Monitoring lateral track irregularity from in-service railway vehicles. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 2007; 221 (1):89-100.

Tsunashima H, Naganuma Y, Matsumoto A, Mizuma T, Mori H. Japanese railway condition monitoring of tracks using in-service vehicle. 5th IET Conference on Railway Condition Monitoring (RCM 2011), Derby, UK, 2011: 29–30.

Tsunashima H, Naganuma Y, Matsumoto A, Mizuma T, Mori H. Condition monitoring of railway track using in-service vehicle. In: Perpinya X, editor. Reliability and safety in railway. InTech; 2012. Available from: http://www.intechopen.com/books/reliability-and-safety-in-railway/condition-monitoring-ofrailway-track-using-in-service-vehicle

Li C, Luo S, Cole C, Spiryagin M. An overview: modern techniques for railway vehicle on-board health monitoring systems. Vehicle System Dynamics 2017; 5(7):1045–1070.

Li P, Goodall R, Weston P, Seng Ling C, Goodman C, Roberts C. Estimation of railway vehicle suspension parameters for condition monitoring. Control Engineering Practice 2007;15(1): 43–55.

Liu XY, Alfi S, Bruni S. An efficient recursive least square-based condition monitoring approach for a rail vehicle suspension system. Vehicle System Dynamics 2016: 1–17.

Gasparetto, L., Alfi, S, Bruni, S. Data-driven condition-based monitoring of high-speed railway bogies. International Journal of Rail Transportation 2013, 1(1): 42–56.

Bionda S, Di Gialleonardo E, Cazzulani G, Braghin F. Development of a new algorithm for wheel-rail contact force estimation using reduced measurement sets. Proceedings of the Mini Conference on Vehicle System Dynamics, Identification and Anomalies 2014: 111.

Cazzulani G, Di Gialleonardo E, Bionda S, Bassetti M, Crosio P, Braghin F. A new approach for the evaluation and the improvement of the metrological characteristics of an instrumented wheelset for the measure of wheel-rail contact forces. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 2017; 231(4):381–393.

Diana G, Resta F, Braghin F, Bocciolone M, Di Gialleo-nardo E, Crosio P. Methodology for the calibration of dynamometric wheel-sets for the measurement of the wheel-rail contact forces", Ingegneria Ferroviaria 2012; 67(1):9–21.


Refbacks

  • There are currently no refbacks.