The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2010
Filed:
Jun. 08, 2006
Fujie Xia, Rockhampton, AU;
Peter Joseph Wolfs, Rockhampton, AU;
Fujie Xia, Rockhampton, AU;
Peter Joseph Wolfs, Rockhampton, AU;
QR Limited, Brisbane, AU;
Australian Rail Track Corporation Ltd, Sydney, AU;
Pacific National (Victoria) Ltd, Melbourne, AU;
Asciano Services Pty Ltd, Melbourne, AU;
TMG Rail Technology Pty Ltd, Sydney, AU;
Rail Corporation NSW, Haymarket, AU;
Central Queensland University, North Rockhampton, AU;
University of Wollongong, New South Wales, AU;
Monash University, Monash University, AU;
University of South Australia, Adelaide, AU;
Queensland University of Technology, Brisbane, AU;
The University of Queensland, St. Lucia, AU;
Abstract
A method of estimating contact forces between the wheels of a railway wagon and a rail track, for use in determining information such as the likelihood of derailment. Accelerations of the body of the wagon are measured using motion sensors located at suitable points on the body. Forces on the side frames of the wagon are calculated based on the accelerations of the body and predetermined parameters of the body. Forces on the wheels of the wagon are calculated based on the accelerations of the body and predetermined parameters of the body. The contact forces between the wheels and the rails are then calculated based on the forces calculated for the side frames and the wheels. The calculations are carried out using an inverse model of the wagon system. Equipment which implements the method is also described.