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A Compound Control Method for Strip Shape

Junfei Qiao, Xiaobo Wang, Chai Tian-you

Open publisher page 1 citations

Abstract

A new global shape control method, compound feedforward cascade control method, is presented for UC rolling mill. Here feedforward compensation eliminates the coupling effects in the global shape system, while the cascade control improves the control performance of the system. Self tuning control and PID control with Smith prediction are respectively used in the inner loop and outer loop. The disturbance rejection capacity of the system is improved and the effects of time delay are removed by using these strategies.

About this research paper

What this paper is about

A new global shape control method, compound feedforward cascade control method, is presented for UC rolling mill. Here feedforward compensation eliminates the coupling effects in the global shape system, while the cascade control improves the control performance of the system. Self tuning control and PID control with Smith prediction are respectively used in the inner loop and outer loop. The disturbance rejection capacity of the system is improved and the effects of time delay are removed by using these strategies.

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Available abstract

A new global shape control method, compound feedforward cascade control method, is presented for UC rolling mill. Here feedforward compensation eliminates the coupling effects in the global shape system, while the cascade control improves the control performance of the system. Self tuning control and PID control with Smith prediction are respectively used in the inner loop and outer loop. The disturbance rejection capacity of the system is improved and the effects of time delay are removed by using these strategies.

Key concepts: Feed forward, Control theory (sociology), Cascade, PID controller, Inner loop, Loop (graph theory), Compensation (psychology), Smith predictor

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