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S. Kuniyuki, T. Hondo, M. Suzuki, T. Miyamoto, K. Nakano, "Improvement of estimation accuracy for wheelset angle of attack using a single-wheel creep-force model by taking into account contact phase difference and lateral contact position", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 31.22, 2022, doi:10.4203/ccc.1.31.22

Keywords: state estimation, wheel-rail interaction, creep force, angle of attack, contact position, Kalman filter, contact phase difference.

Abstract

The purpose of this study is to improve an accuracy of an estimation method using a single-wheel creep-force model to evaluate a running safety more realistically using an instrumented wheelset. To achieve the purpose, this paper proposes a novel estimation method for a wheelset angle of attack using a Kalman filter. In particular, this paper focuses on the method to improve the estimation accuracy under the situation where creep force is saturated with friction force, which was a problem in previous research, by incorporating contact phase difference into outputs. The validity of the proposed method is verified using simulations. The verification results show that the proposed method managed to obtain estimation results for the angle of attack with quantitative validity regardless of track curve radii. Moreover, the proposed method also managed to estimate the lateral displacement of a contact point at the outer rail side when a wheel and a rail contacted at the flange region while traveling on a circular curve.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 1 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 31.22 Improvement of estimation accuracy for wheelset angle of attack using a single-wheel creep-force model by taking into account contact phase difference and lateral contact position S. Kuniyuki^1,2, T. Hondo¹, M. Suzuki¹, T. Miyamoto³ and K. Nakano² ¹Railway Technical Research Institute, Japan ²The University of Tokyo, Japan ³Meisei University, Japan doi:10.4203/ccc.1.31.22 Full Bibliographic Reference for this paper S. Kuniyuki, T. Hondo, M. Suzuki, T. Miyamoto, K. Nakano, "Improvement of estimation accuracy for wheelset angle of attack using a single-wheel creep-force model by taking into account contact phase difference and lateral contact position", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 31.22, 2022, doi:10.4203/ccc.1.31.22 Keywords: state estimation, wheel-rail interaction, creep force, angle of attack, contact position, Kalman filter, contact phase difference. Abstract The purpose of this study is to improve an accuracy of an estimation method using a single-wheel creep-force model to evaluate a running safety more realistically using an instrumented wheelset. To achieve the purpose, this paper proposes a novel estimation method for a wheelset angle of attack using a Kalman filter. In particular, this paper focuses on the method to improve the estimation accuracy under the situation where creep force is saturated with friction force, which was a problem in previous research, by incorporating contact phase difference into outputs. The validity of the proposed method is verified using simulations. The verification results show that the proposed method managed to obtain estimation results for the angle of attack with quantitative validity regardless of track curve radii. Moreover, the proposed method also managed to estimate the lateral displacement of a contact point at the outer rail side when a wheel and a rail contacted at the flange region while traveling on a circular curve. download the full-text of this paper (PDF, 584 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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