公开(公告)号：US10152879B2

公开(公告)日：2018-12-11

申请号：US14936787

申请日：2015-11-10

Applicant: Industrial Technology Research Institute

Inventor： Te-Ming Chen ,  Sen-Chia Chang ,  Chien-Liang Lai ,  Chi-Ting Day

IPC: G08B29/00 ,  G08B23/00 ,  G08B1/00 ,  G08B21/00 ,  G08B3/00 ,  G08B29/18 ,  G08B21/18 ,  G05B23/00

Abstract: A method for monitoring a manufacturing apparatus includes collecting a control signal, of a controller and a corresponding sensing signal, of the manufacturing apparatus over a predetermined period of time; segmenting the control signal and the corresponding sensing signal to obtain at least one control step; calculating a character of the controller based on at least one of the control signal, the sensing signal, the at least one control step, or information from a user manual; generating, based on the character, a health index indicating health of the controller; and generating a warning signal when the health index exceeds a predetermined threshold.