Identification and control of peristaltic pumps in hemodialysis machines

In hemodialysis machines peristaltic pumps are responsible for the transfer of fluids. The main characteristic of these pumps is that they can transport the solutions with significant error. That depends on the tube segment deviation caused through the production. Due to the fact that the medical fluid represents sometimes drugs and in the same time it is required to control the fluid balance of the patient, it is important to transfer these fluids as accurate as possible. The goal of the paper is to design a controller that satisfies the mentioned requirements. First, the system identification is realized by classical moving average method (ARX), followed by the design of two controllers: a classical PID one and a fuzzy controller. After comparing their simulation results, the most preferable one was implemented in practice. Real simulation results of the implemented controller end the paper

HEMOMICROCIRCULATING CHANNEL: THE FORMATION IN ONTOGENESIS AND WITH THE REPARATIVE REGENERATION, THE PATHOLOGY WITH THE PREMATURENESS

The object of investigation: the human material of 219 sutopsy, the experimental material of 130 albino not-pedigree rats. The purpose of the work: establishing the laws of building the hemomicrocirculating channel in the ontogenesis, with the reparative regeneration, with the prematureness. The new original coception of the angiogenesis in the man's ontogenesis has been developed, its differences from the reparative angionesis have been revealed, the morphological criteria of prematureness and pathology of the hemomicirculating channel of the premature children have been established. The data on the morphology of the prematureness, regeneration and pathology of the hemomicrocirculating channel specify the morphogenesis of the different pathological states: prematureness, inborn heart disease of the weak type, chronic inflammation. The main positions of the investigation have been introduced in the study process in the chairs of histology, pathological antomy, the faculty pediatrics of the Institute, in the work of the child's prosecture of Yaroslavl town. The field of application: the pathological anatomy, the histology, the angiologyAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio