Inventors:
Hong Zhao - Mars PA
Guillermo Sentoni - Pittsburgh PA
John P. Guiver - Pittsburgh PA
Assignee:
Aspen Technology, Inc. - Cambridge MA
International Classification:
G06N 302
Abstract:
A non-linear dynamic predictive device ( ) is disclosed which operates either in a configuration mode or in one of three runtime modes: prediction mode, horizon mode, or reverse horizon mode. An external device controller ( ) sets the mode and determines the data source and the frequency of data. In prediction mode, the input data are such as might be received from a distributed control system (DCS) ( ) as found in a manufacturing process; the device controller ensures that a contiguous stream of data from the DCS is provided to the predictive device at a synchronous discrete base sample time. In prediction mode, the device controller operates the predictive device once per base sample time and receives the output from the predictive device through path ( ). In horizon mode and reverse horizon mode, the device controller operates the predictive device additionally many times during base sample time interval. In horizon mode, additional data is provided through path ( ).