公开(公告)号：US10242319B2

公开(公告)日：2019-03-26

申请号：US13845144

申请日：2013-03-18

Applicant: NATIONAL CHENG KUNG UNIVERSITY

Inventor： Fan-Tien Cheng ,  Yao-Sheng Hsieh ,  Chung-Ren Wang ,  Saint-Chi Wang

IPC: G06N7/00 ,  G06F17/18 ,  G06F17/10 ,  G05B23/02

Abstract: A baseline predictive maintenance method for a target device (TD) and a computer program product thereof are provided. Fresh samples which are generated when the target device produces workpieces just after maintenance are collected, and a new workpiece sample which is generated when the target device produces a new workpiece is collected. A plurality of modeling samples are used to build a TD baseline model in accordance with a conjecturing algorithm, wherein the modeling samples include the new workpiece sample and the fresh samples. A TD healthy baseline value for the new workpiece is computed by the TD baseline model, and a device health index (DHI), a baseline error index (BEI) and baseline individual similarity indices (ISIB) are computed, thereby achieving the goals of fault detection and classification (FDC) and predictive maintenance (PdM).