Model predictive control of a complex rheological forming process based on a finite element model

Bernard, T., Herrero Blanco, I., Peters, M.
Fraunhofer Institute for Information and Data Processing IITB, Business Unit Systems for Measurement, Control, and Diagnosis (MRD), Karlsruhe

Rheological forming processes of glass and plastics, where heat conduction, radiation and fluid dynamics are the main physical effects, are strongly nonlinear.

The aim of this paper is to investigate a control design with the use of the spatially distributed model. As control methodology we investigate linear and nonlinear model predictive control (MPC, NMPC) schemes. These approaches are compared with PI control which is still widely used in industry.

This paper is organized as follows:

  • In section 2 the model of a complex rheological forming process is developed
  • Section 3 provides an overview of the uncontrolled system behaviour of the process
  • In section 4 the results of the controlled system behaviour (with PI control, MPC, NMPC) will be presented
  • Section 5 summarizes the most important results.