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In this paper, the system model is the Tennessee Eastman test
process. The plant-wide control system considers parameter un-
certainty problem which always exit but was usually neglected
in practical plant.The new structures I and II based on pairing
controlled and manipulated variables have faster response of e-
liminating disturbance and allow larger parameter uncertainty
than McAvoy''s. Finally, comparing the three structures'' ability
of increasing product flow rate,which shows the advantage of
new sructures again.
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