公开(公告)号：US20250114856A1

公开(公告)日：2025-04-10

申请号：US18826809

申请日：2024-09-06

Applicant: ROLLS-ROYCE plc

Inventor： Alistair J E SMITH ,  Kee Khoon Lee ,  Henry KASIM ,  Teck Kai CHAN

IPC: B23K15/02 ,  G05B19/4155

Abstract: A method for controlling a power beam process includes carrying out a plurality of test power beam processes using a power beam on one or more test components and determining a plurality of power distributions corresponding to the plurality of test power beam processes. The method includes determining a plurality of beam parameters, generating derived features based on the plurality of beam parameters, and determining a plurality of process characteristics of each test power beam process. The method further includes generating a comprehensive dataset, dividing the comprehensive dataset into a test dataset and a training dataset, and determining a plurality of key discriminative features from the plurality of derived features of a set of training power distributions of the training dataset.

公开(公告)号：US10591325B2

公开(公告)日：2020-03-17

申请号：US15172820

申请日：2016-06-03

Applicant: ROLLS-ROYCE plc

Inventor： Yiping Ke ,  Jian Cheng Wong ,  Chi-Keong Goh ,  Kee Khoon Lee

IPC: G01F1/32

Abstract: A flow feature detection method is described. The method includes storing a plurality of points at locations over a region in which vortex detection is to be performed. A value for each of a plurality of fluid flow parameters, such as velocity, pressure and density, is determined at each point. The points are grouped as being contained in either a flow feature portion or normal flow portion of the region according to one or more statistical distribution for the fluid flow parameters. A point is identified as being indicative of the flow feature by identifying multiple further points at least partially surrounding the point, and determining a plane in which the flow feature is identifiable based upon the relative values of the one or more fluid flow parameter for the further points. The method may be used to detect vortices and to identify a two-dimensional plane representative of a vortex.