Application of fuzzy logic in hemodialysis equipment

In hemodialysis machines peristaltic pumps are responsible for the transfer of fluids. These pumps can only deliver the solutions with significant error, due to the deviation of the pump head and due to production errors. Previous work focused on system identification and fluid flow control by a PID controller. In this paper the goal is to replace the PID controller with an adaptive fuzzy controller. Furthermore, the use of integral component for error signal rejection is examined as input to the fuzzy logic system. The mentioned controllers are compared through appropriate aspects and the paper ends with discussion of the behavior of the adaptive fuzzy controller on the real system.