LMI-Based Feedback Regulator Design via TP Transformation for Fluid Volume Control in Blood Purification Therapies

With blood purification the life of a person suffering by kidney malfunction can be saved or the quality of her/his life can be increased. This is the purpose of hemodialysis machines, where the blood of the patient is filtered (cleared) in an extracorporeal tube system. Here peristaltic pumps are responsible for the fluid transport, where the strict control is a serious need, in order to maintain patient fluid balance and meet exact dosage. The current paper focuses on designing a robust controller with TP transformation. This controller is presented from the application point of view. The experiences with the designed controller are tested on a real system discussing their applicability.