Method and device for conducting a process in a controlled system with at least one precomputed process parameter.

US5600758A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Einar Broese · Erlangen, DE
• Otto Gramckow · Uttenreuth, DE
• Thomas Martinetz · Munich, DE
• Guenter Soergel · Nuremberg, DE

Key dates

• Filing date: Nov 10, 1994
• Grant date: Feb 4, 1997
• Expiry date: Nov 10, 2014

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B17/02
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Known methods for conducting a process in an automatically controlled system preset the system at the beginning of each process run based on at least one process parameter. The process parameter is precomputed with a model of the process which is supplied with input values. During the process the input values and the process parameter are measured and are used to adaptively improve the precomputed process parameter after the process run. The present invention simplifies and improves the precomputed value of the process parameter by supplying at least part of the input values to a neural network. The network response of the neural network forms a correction value for the approximate value delivered by the model for the process parameter to be precomputed. The network parameters of the neural network are modified after each process run to adapt the precomputed value to the actual process events.