System und Verfahren zur Steuerung eines Durchflussregelventils in einer Füllmaschine

Details

Veröffentlichungs-Nr.

EP4155861

Aktenzeichen

EP22195768

Anmeldetag

15. September 2022

Veröffentlichung

17. Juli 2024

Erteilung

17. Juli 2024

Rechtsraum

EP

IPC

G05D7/06B65B9/20B67C3/28

Abstract

A method for controlling a flow regulating valve (6) of a filling machine (1), controlling the flow of pourable food product, envisages: receiving an inlet pressure measurement (P<IN>) from a pressure sensor (14); receiving an inlet flow measurement (F<IN>) from a flow meter (16); determining a control signal (S<C>) for controlling an operating position of the flow regulating valve (6) by combined contributions (C<1>, C<2>) of a flow feedback control module (22), receiving at its input a flow set point (F<SP>) and the inlet flow measurement (F<IN>) and generating a first control contribution (C<1>) indicative of a difference between the inlet flow measurement and the flow set point; and a flow feed-forward control module (20), receiving at its input the inlet pressure measurement (P<IN>) and the flow set point (F<SP>) and generating a second control contribution (C<2>) as a function of the flow set point and inlet pressure measurement, using pre-stored fluid-dynamic maps, which may be a result of a characterization of the flow regulating valve in a test condition. The flow feed-forward control module uses the fluid dynamics maps in a dynamically adaptive manner, depending on different operating conditions of the filling machine and/or the related pourable food product, thereby adapting to the same different operating conditions and/or the pourable food product.

Anmelder

Firma

Tetra Laval Holdings & Finance S.A.

Land

🇨🇭 Schweiz

Fachgebiete