Abstract
Moisture content (mc) within the cotton fibre is an important aspect for all stages of
the ginning process. However due to the process dynamics, mc is currently being
controlled by regulating the water and air temperatures from the Humidifiers.
Human intervention and lack of consistence on set-points determination has resulted
in inconsistent mc during humidification. This procedure requires a control system
which will be able to adjust the process set-points automatically by eliminating the
need for human intervention. In this paper a robust Model Reference Adaptive
Control (MRAC) system for a Samuel Jackson Humidifier is presented. This system
improves upon the existing system by creating a closed loop controller with
parameters that can be updated to change the response from reference model. The
control parameters are then updated based on this error thus the parameters
converge to ideal values that cause the plant response to match the response of the
reference model.