Patent ID: 8812266

Claim:
An abnormality determination system for a processing apparatus, comprising: a data acquiring section configured to acquire time-series data indicating change of a parameter value with time during processing of a processing object, wherein the data acquiring section is configured to obtain the parameter value from a signal outputted by a sensor installed in a processing apparatus for processing the processing object and is inputted to the data acquiring section, and wherein the parameter value indicates a processing condition for processing the processing object during the processing of the processing object; a data selecting section configured to select only model data, which is time-series data associated with the processing objections having been processed normally, from the time-series data having been acquired by the data acquiring section; a threshold value setting section configured to calculate variable threshold value data defining the change of an allowable range of the parameter value with time during processing of a processing object, based on the model data selected by the data selecting section; and a determining section configured to determine an occurrence of an abnormality of the processing condition of another processing object, which is processed after calculation of the variable threshold value data, by comparing time-series data, which is associated with said another processing object and is acquired by the data acquiring section, with the variable threshold value data.