公开(公告)号：US20250130563A1

公开(公告)日：2025-04-24

申请号：US19007799

申请日：2025-01-02

Applicant: ABB Schweiz AG

Inventor： Taisuke Minagawa ,  Diego Vilacoba ,  Ido Amihai ,  Martin Wolfgang Hoffmann ,  Benjamin Kloepper ,  Benedikt Schmidt

IPC: G05B23/02

Abstract: A method for detecting an anomaly includes obtaining a time-series of historical process variables within a predefined time span; determining a cycle time of the historical process variables; clustering the historical process variables into clusters based on cycle time; arranging the clusters into a tree; storing the tree; obtaining a time-series of a plurality of current process variables, which correspond to the historic process variables; and detecting the anomaly of at least one device by identifying a cycle time of a current process variable that is longer than the cycle time of a corresponding historic variable.