Abb Schweiz Ag

Boris Fiedler

Benjamin Kloepper

Marcel Dix

Mithun P Acharya

Karl Severin

Benjamin KLÖPPER

A method for problem diagnosis in a robot system having one or more robots includes the steps of: a) receiving (S) a first problem message from a robot of the robot system, the first problem message including one or more data elements descriptive of a problem experienced by the robot; b) receiving (S) a subsequent problem message from a robot of the robot system; c) if a time elapsed between receipt of the subsequent problem message and receipt of an immediately preceding problem message is shorter than a predetermined threshold (S), adding the subsequent problem message to a message set which comprises the immediately preceding problem message (S); and d) if the time elapsed is longer than the predetermined threshold (S), terminating (S) the message set of the immediately preceding problem message without adding the subsequent problem message, and establishing (S, S) a new message set.

Diagnosis method and apparatus

A data processing device capable of performing problem diagnosis in a production system with a plurality of robots includes: a first time series obtaining part for obtaining historical event data used for determining some historical alarm indicator in time series and storing the historical event data as first time series data; a historic alarm indicator calculation part for calculating a series of historic alarm indicators using statistic characteristics of the first time series data; a threshold definition part for defining at least one threshold value based on a statistical distribution of the historical alarm indicators; a second time series obtaining part for obtaining operational event data during operation of the robots used for determining some operational alarm indicator in time series and storing the operational event data as second time series data; and an operational alarm indicator calculation part for calculating a series of operational alarm indicators.

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Wiesbaden, Germany

Boris Fiedler