Optimisation of a material separation process

US9760066B2 · kind B2 · utility

Assignee

• ABB RESEARCH LTD. · CH

Inventors

• Jens Pettersson · Hagfors, SE
• Lars Ledung · Västerås, SE
• Patrik Westerlund · Gothenburg, SE

Key dates

• Filing date: Mar 18, 2009
• Grant date: Sep 12, 2017
• Expiry date: Feb 18, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B13/048
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The invention concerns a method, device and computer program product for controlling a material separation process as well as to a material separating system. The material separating system comprises units separating desired material from undesired material, units measuring process output variables in the material separation process indicative of the degree of separation between desired and undesired material, a unit estimating the state of the process by applying the measured output variables and external constraints for a prediction time interval on a model of the material separation process, a unit optimising an objective function through maximising the recovery of the desired material in the separation process, which optimising provides at least one set point value for each input variable of the model, and at least one regulating unit regulating the separation process by using the set point value.