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The concept of fault-tolerant control has extensively been explored with
various mapping of development. It starts from the system characteristic, the
robustness of the controller, estimation methods and optimization, to the
combination of the faults such that it can touch the true observed system. The
mathematical concepts of the scrubber plant taking into account the pressure
parameter along with sensing element and actuator are proposed. The data to
construct the designs derive from the true values in one of Indonesian company.
The performances coming from the simulations depict that the open- and
closed-loop system could be the same as those of the real results. Furthermore,
the observer is proposed to give the estimates of the states of $(\hat{x})$ and
$(\hat{f}_s)$ showing the positive trace on the set-point of the residual fault
followed by designing the fault-tolerant control with sensor fault on
sensitivity. The scenarios are to give the lack of reading in sensor with
$70\%$ and $85\%$ sensitivity and those are contrasted to the system without
FTC (only PI controller). The yields portray that the system with FTC could
deal with those sensor fault scenarios while its counterpart cannot drawing the
faulty performance instead of tracking the set-point. The next project
associated with this paper is also mentioned in the last section.
