公开(公告)号：US11921001B2

公开(公告)日：2024-03-05

申请号：US17654432

申请日：2022-03-11

Applicant: Hiwin Technologies Corp.

Inventor： Hsien-Yu Chen ,  Yu-Sheng Chiu ,  Chih-Chun Cheng ,  Wen-Nan Cheng ,  Chi-Ming Liu

IPC: G01M13/00 ,  G01M5/00 ,  G05B23/02

CPC classification number: G01M13/00 ,  G01M5/0066 ,  G05B23/0256

Abstract: A method and system for inspecting deviation in dynamic characteristics of a feeding system are provided, and the method includes: exciting the feeding system and detecting vibrations of a subcomponent of a component to be inspected of the feeding system to generate a monitoring excitation signal in a monitoring mode; calculating, by a modal analysis method, monitoring eigenvalues and monitoring eigenvectors of the monitoring excitation signal; determining, by a modal verification method, similarity between the monitoring eigenvalues and standard eigenvalues of a digital twin model and similarity between the monitoring eigenvectors and standard eigenvectors of the digital twin model; determining that the dynamic characteristics of the subcomponent are deviated, when the monitoring eigenvalues and monitoring eigenvectors are not similar to the standard eigenvalues and standard eigenvectors. Therefore, the subcomponent whose dynamic characteristics are deviated can be sensed remotely and precisely.

公开(公告)号：US20230244826A1

公开(公告)日：2023-08-03

申请号：US17649242

申请日：2022-01-28

Applicant: Hiwin Technologies Corp.

Inventor： Po-Lin Lee ,  Hsien-Yu Chen ,  Yu-Sheng Chiu ,  Wen-Nan Cheng ,  Chih-Chun Cheng

IPC: G06F30/12

CPC classification number: G06F30/12

Abstract: A method and a system for building digital twin models allow the setting of a shape and dimensions of a simplified geometric solid corresponding to a component of a feeding system; after sampling the solid to obtain second position data, calculates a set of model eigenvalues and a set of model eigenvectors by a modal analysis method according to a material data of the component, the second position data and second size data of the solid; and defines the solid as a digital twin model of the component when it is determined by a modal verification method that a set of actual eigenvectors of the component is similar to the set of model eigenvectors. Data amounts of the second position and size data are far less than data amounts of first position and size data of an image of the component.

公开(公告)号：US10393707B2

公开(公告)日：2019-08-27

申请号：US15585583

申请日：2017-05-03

Applicant: HIWIN TECHNOLOGIES CORP.

Inventor： Chih-Chun Cheng ,  Ping-Chun Tsai ,  Wen-Nan Cheng ,  Yu-Hsin Kuo ,  Yin-Chun Cheng ,  Hsi-Hsun Cheng ,  Kuan-Te Yu

IPC: G01N29/14 ,  G01N29/44

Abstract: A method for estimating a variation in a preload applied to a linear guideway of a machine tool includes steps of: a) obtaining, via each of vibration sensors, first and second vibration signals that are generated according to detection of vibration of a table disposed on the linear guideway respectively at first and second time instants; b) determining, via the computation module, first and second natural frequencies based on a theoretical mode shape and respectively on the first and second vibration signals; and c) determining, via the computation module, the variation in the preload based on the first and second natural frequencies.