公开(公告)号：US20240321111A1

公开(公告)日：2024-09-26

申请号：US18679268

申请日：2024-05-30

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Jian GUO

IPC: G08G3/02

CPC classification number: G08G3/02

Abstract: Embodiments of the application provide a position estimation and prediction method for a moving object. The method includes: updating a model parameter of a position prediction model according to a position data sequence of the moving object at a current sampling moment; determining position prediction data at the current sampling moment according to the position data sequence and the position prediction model after the model parameter is updated; determining position estimation data at the current sampling moment according to the position prediction data and the position observation data at the current sampling moment; and determining position prediction data of a next sampling moment according to the position estimation data at the current sampling moment, the position data sequence and the position prediction model after the model parameter is updated, and entering an iteration operation of the next sampling moment.

公开(公告)号：US20240346201A1

公开(公告)日：2024-10-17

申请号：US18751496

申请日：2024-06-24

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Jian GUO

IPC: G06F30/17

CPC classification number: G06F30/17

Abstract: A method includes: determining a plurality of stress amplitude ranges based on a plurality of preset discrete stress amplitudes; determining a plurality of dynamic S-N curves based on the plurality of discrete stress amplitudes and an attenuation coefficient of each stress amplitude range, where the attenuation coefficient of each stress amplitude range indicates a degradation degree of material performance of a steel box girder corresponding to each stress amplitude range relative to material performance of a steel box girder corresponding to a previous stress amplitude range; and predicting a service life of a steel box girder based on the plurality of dynamic S-N curves, a plurality of monitored stress amplitudes of the steel box girder, and a plurality of monitoring cycle quantities in a one-to-one correspondence with the plurality of monitored stress amplitudes, where the plurality of monitored stress amplitudes are located in the plurality of stress amplitude ranges.