Abstract
This paper focus on design of multivariable
controller for Quadruple Tank Process, a two input two
output system with large plant uncertainty using QFT
methodology. In the present work, a new approach using
Quantitative Feedback Theory (QFT) is formulated for
design of a robust two degree of freedom controller for
Quadruple Tank Process. The design is done in frequency
domain. This paper presents a design method for a 2 x 2
multiple input multiple output system. The plant
uncertainties are transformed into equivalent external
disturbance sets, and the design problem becomes one of
the external disturbance attenuation. The objective is to
find compensator functions which guarantee that the
system performance bounds are satisfied over the range
of plant uncertainty. The methodology is successfully
applied to design a two degree of freedom compensator
Quadruple Tank Process.
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