NDLI: Eddy current sensor based velocity and distance estimation in rail vehicles

Content Provider	IET Digital Library
Author	Hensel, Stefan Strauß, Tobias Marinov, Marin
Abstract	The precise localisation of rail vehicles is fundamental to the development and employment of more efficient train control systems in security, logistics and disposition applications. A key element of this is the exact and reliable velocity and distance estimation. The popular satellite navigation (global navigation satellite systems) and visual odometry, based on optical systems, tend to fail in the rough environment of rail application scenarios. This study describes an approach to making a precise distance estimate using an innovative eddy current sensor system. This is achieved through the combination of an augmented cross-correlation approach to highly accurate velocity estimation. That is subsequently employed to determine the travelled distance based on counting rail clamps in a spatial transformed space. This approach relies on recursive state estimation of the dynamic states and a statistical assessment of the counted rail clamps for the purpose of outlier rejection. The proposed methods are compared and evaluated in a quantitative way on the basis of experimental data. The results prove that the proposed approach can improve the accuracy and reliability of velocity measurement and relative position detection.
Starting Page	875
Ending Page	881
Page Count	7
ISSN	17518822
Volume Number	9
e-ISSN	17518830
Issue Number	Issue 7, Oct (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/9/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2014.0302
Journal	IET Science, Measurement & Technology
Publisher Date	2015-05-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acceleration Augmented Cross-correlation Approach Distance Estimation Distance Measurement Dynamic States Eddy Current Sensor Eddy Currents Electric Sensing Device Rail Vehicle Railway Rolling Stock Rotation Measurement Rough Environment Sensing Device And Transducers Spatial Variables Measurement Statistical Assessment Velocity Velocity Estimation Velocity Measurement
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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