US 12,447,526 B2
Continuous casting plant and corresponding regulation method
Cristiano Pezzutto, Chiarano (IT); Riccardo Conte, Ronchi Dei Legionari (IT); Gianpiero Brunetti, Ronchi Dei Legionari (IT); and Andrea Carboni, Milan (IT)
Assigned to Danieli & C. Officine Meccaniche S.P.A., Buttrio (IT); and DANIELI AUTOMATION S.P.A., Buttrio (IT)
Appl. No. 18/702,471
Filed by Danieli & C. Officine Meccaniche S.P.A., Buttrio (IT); and DANIELI AUTOMATION S.P.A., Buttrio (IT)
PCT Filed Oct. 18, 2022, PCT No. PCT/IT2022/050277
§ 371(c)(1), (2) Date Apr. 18, 2024,
PCT Pub. No. WO2023/067636, PCT Pub. Date Apr. 27, 2023.
Claims priority of application No. 102021000026834 (IT), filed on Oct. 19, 2021.
Prior Publication US 2024/0416411 A1, Dec. 19, 2024
Int. Cl. B22D 11/18 (2006.01); B22D 11/10 (2006.01); G05D 9/12 (2006.01)
CPC B22D 11/181 (2013.01) [B22D 11/10 (2013.01); G05D 9/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. Plant for continuous casting of metal products comprising a mould in which a metal in a molten state is able to be poured with a determinate flow rate, a regulation device capable of regulating said flow rate, a control unit configured to manage at least movements of said regulation device, and at least one detection device capable of detecting every punctual variation of a level of metal in said mould with respect to a nominal value thereof and generating a corresponding variation signal having a frequency, an amplitude and a phase and sending the corresponding variation signal to said control unit, wherein said control unit comprises a central processing unit and at least one memory unit connected to the central processing unit in which at least one first compensation algorithm is stored, wherein the at least one first compensation algorithm is configured to make said central processing unit, without using any measurement or estimate of a disturbance acting on said plant, selectively generate a command signal for said regulation device starting from said variation signal and taking into account an overall delay between the generation of said variation signal and actual actuation of said regulation device, said command signal having at least a command signal variable amplitude and a command signal variable phase.
 
2. Regulation method for a plant for continuous casting of metal products, having a mould to contain metal in a molten state, regulation means to regulate a flow rate of said metal and keep a level thereof stable in said mould, and a control unit connected to said regulation means, wherein said method comprises a detection step in which detection means detect a punctual variation of said level with respect to a nominal value, and generate a corresponding variation signal, having a frequency, an amplitude and a phase, which is sent to the control unit, and wherein the method further comprises a control step, in which said control unit, in response to said variation signal and in accordance with at least one first compensation algorithm, selectively generates, without using any measurement or estimate of a disturbance acting on said plant, a command signal for said regulation device starting from said variation signal and taking into account an overall delay between the generation of said variation signal and actual actuation of said regulation device, said command signal having at least a command signal variable amplitude and a command signal variable phase.