A decoupling controller for use with a process having two...

Details A decoupling controller for use with a process having two... A decoupling controller for use with a process having two...

G - Physics

05

B

G05B 6/02 (2006.01) D21F 7/00 (2006.01) D21G 9/00 (2006.01) G01N 33/34 (2006.01)

Patent

CA 2262308

A decoupling controller for use with a process such as paper-making having two input variables such as stock flow and steam pressure and two output variables such as moisture and basis weight. Decoupling is accomplished by the use of linked internal model controllers where for each individual unit of the linked pairs, a P.I.D. proportional, integral, derivative) unit includes all of the feedback loop gains and than the process itself is modeled by a first order transfer function and deadtime units with two cross-linked error signals fed back. A specific technique of cross-linking the internal model controllers eliminates cross-coupling between the input and output variables.

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