Control System of Drain, Bypass, and Dialysate Fluid Conditioning Mechanisms in Ultrafiltration Processes in Hemodialysis Machines

One solution for treating chronic kidney disease is to replace the kidney function as a filtration device with hemodialysis to filter dirty blood. This study aims to regulate the dialysate fluid, both the direction of the flow of the dialysate fluid and the speed of the flow of the dialysate fluid. In this study, instrumentation has been developed to regulate the direction of flow of dialysate fluid and the speed of flow of dialysate fluid. There are two control system blocks, namely the bypass valve control system and the pump speed control system. The control system used is to use a fuzzy logic controller for the two control systems that will run sequentially. The results obtained after conducting this research are that the bypass valve control system has an accuracy rate of 100%, while the pump control system has an accuracy rate of 98.75%.