Design of IMC based PI Controller for Paper Machine Headbox
Keywords:Internal Model Control (IMC); Zeigler - Nichols (ZN); Paper Machine; Headbox; MIMO Controller
Headbox is one the major process of a paper machine which is vulnerable to many disturbances. Its efficient
control is highly required because any disturbance in the process greatly affects the working of the headbox.
Various tuning techniques have been designed and applied on paper machine headbox. This paper presents the
design and analysis of Internal Model Control (IMC) based Multi Input – Multi Output (MIMO) - Proportional –
Integral (PI) controller for paper machine headbox. Along with transient response, integral error performance
indices (ISE, IAE, ITSE, and ITAE) have also been obtained. The performance of designed multivariable IMC –
PI Controller has been compared with the conventional ZN - PI controller.
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Response of Pressure to set point changes in Air Valve Position
air valve position
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