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This thesis aims at the study on the water level control of two
open vessels called degasifiers in a deminered water treatment
plant.First,we shall show that,by analying the dynamics
characteristic of the process ,the system is not only a process
with long time constant and long dead-time but also a typical
interactive control system.Next,this thesis describes the
develop of a PID controller and a fuzzy controller which
consists of a PD type and a PI type fuzzy controllers.then ,
both of them are implemented via a 486 DX-33 note-book PC
individually.Finally ,the controllers are applied to the actual
water level control of a degasifier.Experimental results
demonstrate that better control performance can be achieved by
the proposed fuzzy controller in comparsion with the well-tuned
PID controller.
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