Integrated Health Monitoring for the actuation system of high-speed tilting trains
Tilting trains are designed to reach high speed on pre-existing railroads without the need of adjusting the tracks geometry or building dedicated lines; the tilting of the carbody keeps an acceptable level of comfort by limiting the lateral acceleration felt by passengers when the train runs along c...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Prognostics and Health Management Society
2017-12-01
|
| Series: | International Journal of Prognostics and Health Management |
| Subjects: | |
| Online Access: | https://papers.phmsociety.org/index.php/ijphm/article/view/2664 |
| _version_ | 1819148837535612928 |
|---|---|
| author | Andrea De Martin Andrea Dellacasa Giovanni Jacazio Massimo Sorli |
| author_facet | Andrea De Martin Andrea Dellacasa Giovanni Jacazio Massimo Sorli |
| author_sort | Andrea De Martin |
| collection | DOAJ |
| description | Tilting trains are designed to reach high speed on pre-existing railroads without the need of adjusting the tracks geometry or building dedicated lines; the tilting of the carbody keeps an acceptable level of comfort by limiting the lateral acceleration felt by passengers when the train runs along curved tracks with speed higher than the balance speed built into the curve geometry. As such, they are often used to reduce travel times on routes with several curves. Tilting is performed through a position-controlled actuation system which operates according to the commands received from the train control system: in the studied configuration, the torque needed to tilt the car body with respect to the bogie is provided by a series of hydraulic actuators, while the position information used to close the control loop comes from two capacitive sensors located in the front and rear part of each vehicle. Tilt angle measurement is vital for the system operation and for ensuring a safe ride; the traditional solution in case of discrepancy between the signals of the two tilt angle sensors of any vehicle is to disable the tilting function while limiting the train speed to avoid issues during changes of direction. In a similar fashion, the failure in one (or more) of the tilting actuators would result in the loss of the tilting capability and the return to a fixed configuration operating at reduced speed. It should be noticed that the negative impact of the loss of the tilting system is not limited to the faulty train, since it might affect the entire traffic schedule on the interested lines. The paper presents an integrated Health Monitoring framework that makes intelligent use of all available information thus enhancing the system availability, allowing its operation even in presence of faulty sensors and detecting the onset of failures in the actuation system. At the same time its use can facilitate maintenance organization, simplify the spare parts logistics and provide help to the traffic management. The proposed framework has been developed taking advantage of a high-fidelity model of the physical system validated through comparison with experimental mission profiles on the Lichtenfels - Saalfeld and Battipaglia - Reggio Calabria routes, which have been used by the train manufacturer to assess the performance of their tilting trains. |
| first_indexed | 2024-12-22T13:52:04Z |
| format | Article |
| id | doaj.art-7b5fed3f6130433284a1a1171424dea9 |
| institution | Directory Open Access Journal |
| issn | 2153-2648 2153-2648 |
| language | English |
| last_indexed | 2024-12-22T13:52:04Z |
| publishDate | 2017-12-01 |
| publisher | The Prognostics and Health Management Society |
| record_format | Article |
| series | International Journal of Prognostics and Health Management |
| spelling | doaj.art-7b5fed3f6130433284a1a1171424dea92022-12-21T18:23:38ZengThe Prognostics and Health Management SocietyInternational Journal of Prognostics and Health Management2153-26482153-26482017-12-0183doi:10.36001/ijphm.2017.v8i3.2664Integrated Health Monitoring for the actuation system of high-speed tilting trainsAndrea De Martin0Andrea Dellacasa1Giovanni Jacazio2Massimo Sorli3Politecnico di Torino, Torino, 10129, ItalyPolitecnico di Torino, Torino, 10129, ItalyPolitecnico di Torino, Torino, 10129, ItalyPolitecnico di Torino, Torino, 10129, ItalyTilting trains are designed to reach high speed on pre-existing railroads without the need of adjusting the tracks geometry or building dedicated lines; the tilting of the carbody keeps an acceptable level of comfort by limiting the lateral acceleration felt by passengers when the train runs along curved tracks with speed higher than the balance speed built into the curve geometry. As such, they are often used to reduce travel times on routes with several curves. Tilting is performed through a position-controlled actuation system which operates according to the commands received from the train control system: in the studied configuration, the torque needed to tilt the car body with respect to the bogie is provided by a series of hydraulic actuators, while the position information used to close the control loop comes from two capacitive sensors located in the front and rear part of each vehicle. Tilt angle measurement is vital for the system operation and for ensuring a safe ride; the traditional solution in case of discrepancy between the signals of the two tilt angle sensors of any vehicle is to disable the tilting function while limiting the train speed to avoid issues during changes of direction. In a similar fashion, the failure in one (or more) of the tilting actuators would result in the loss of the tilting capability and the return to a fixed configuration operating at reduced speed. It should be noticed that the negative impact of the loss of the tilting system is not limited to the faulty train, since it might affect the entire traffic schedule on the interested lines. The paper presents an integrated Health Monitoring framework that makes intelligent use of all available information thus enhancing the system availability, allowing its operation even in presence of faulty sensors and detecting the onset of failures in the actuation system. At the same time its use can facilitate maintenance organization, simplify the spare parts logistics and provide help to the traffic management. The proposed framework has been developed taking advantage of a high-fidelity model of the physical system validated through comparison with experimental mission profiles on the Lichtenfels - Saalfeld and Battipaglia - Reggio Calabria routes, which have been used by the train manufacturer to assess the performance of their tilting trains.https://papers.phmsociety.org/index.php/ijphm/article/view/2664tilting trainsautomatic diagnosticsphm in railways |
| spellingShingle | Andrea De Martin Andrea Dellacasa Giovanni Jacazio Massimo Sorli Integrated Health Monitoring for the actuation system of high-speed tilting trains International Journal of Prognostics and Health Management tilting trains automatic diagnostics phm in railways |
| title | Integrated Health Monitoring for the actuation system of high-speed tilting trains |
| title_full | Integrated Health Monitoring for the actuation system of high-speed tilting trains |
| title_fullStr | Integrated Health Monitoring for the actuation system of high-speed tilting trains |
| title_full_unstemmed | Integrated Health Monitoring for the actuation system of high-speed tilting trains |
| title_short | Integrated Health Monitoring for the actuation system of high-speed tilting trains |
| title_sort | integrated health monitoring for the actuation system of high speed tilting trains |
| topic | tilting trains automatic diagnostics phm in railways |
| url | https://papers.phmsociety.org/index.php/ijphm/article/view/2664 |
| work_keys_str_mv | AT andreademartin integratedhealthmonitoringfortheactuationsystemofhighspeedtiltingtrains AT andreadellacasa integratedhealthmonitoringfortheactuationsystemofhighspeedtiltingtrains AT giovannijacazio integratedhealthmonitoringfortheactuationsystemofhighspeedtiltingtrains AT massimosorli integratedhealthmonitoringfortheactuationsystemofhighspeedtiltingtrains |