Rolling Taking Into Account Frequency Behaviour
Patent No. EP3974073 (titled "Rolling Taking Into Account Frequency Behaviour") was filed by Primetals Germany on Sep 28, 2020. The application was issued on Jul 19, 2023.
Patent Summary
A rolling mill operating method utilizes a control device to cyclically determine setpoint values for final control elements based on final thickness deviations ($\delta d_2$) of metal strip portions from a setpoint thickness ($d_2^*$) at the exit side. The final control elements include a feeding device (setpoint speed $v_3^*$ or torque $M_3^*$), a removing device (setpoint speed $v_4^*$ or torque $M_4^*$), a rolling stand adjusting device (setpoint rolling-gap $s^*$), and a rolling stand drive (roll circumferential speed $v_U^*$ or rolling torque $M_2^*$). The control device determines at least one setpoint value by processing the thickness deviations while accounting for a description of the inverse frequency response of the respective final control element to optimize thickness compensation.
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Date
Description
EP3974073
- Application Number
- EP20198745A
- Filing Date
- Sep 28, 2020
- Status
- Granted And Under Opposition
- Jun 16, 2023
- Publication Date
- Jul 19, 2023
- External Links
- Slate, Register , Google Patents