Patents by Inventor Fujie Xia

Fujie Xia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Estimation of wheel rail interaction forces
    Patent number: 7853412
    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.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: December 14, 2010
    Assignees: QR Limited, Australian Rail Track Corporation Ltd, Pacific National (Victoria) Ltd, Asciano Services Pty Ltd, TMG Rail Technology Pty Ltd, Rail Corporation NSW, Central Queensland University, University of Wollongong, Monash University, University of South Australia, Queensland University of Technology, The University of Queensland
    Inventors: Fujie Xia, Peter Joseph Wolfs
  • ESTIMATION OF WHEEL RAIL INTERACTION FORCES
    Publication number: 20090076742
    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.
    Type: Application
    Filed: June 8, 2006
    Publication date: March 19, 2009
    Applicants: THE UNIVERSITY OF QUEENSLAND, QUEENSLAND UNIVERSITY OF TECHNOLOGY, UNIVERSITY OF SOUTH AUSTRALIA, MONASH UNIVERSITY, UNIVERSITY OF WOLLONGONG, CENTRAL QUEENSLAND UNIVERSITY, RAIL CORPORATION NSW, TMG RAIL TECHNOLOGY PTY LTD, ASCIANO SERVICES PTY LTD, PACIFIC NATIONAL (VICTORIA) LTD, AUSTRALIAN RAIL TRACK CORPORATION LTD, QR LIMITED
    Inventors: Fujie Xia, Peter Joseph Wolfs