An Unprecedented Automated Fuzzy Model for Diabetes Mellitus

Abstract: Finding an expert fuzzy model for glucose-insulin system seems to be essential because this model is always changeable according to parameters such as body weight, individual age, time and numbers of meals, physical activities and etc. In this study we try to obtain a fuzzy model for diabetes mellitus. At first a certain diet is introduced and the amount of carbohydrate in each meal is calculated, then by introduced diet the amount of blood glucose and insulin as outputs of diabetes mellitus system are determined. Although there are some models about glucose-insulin system but in this study we use automated method, recursive least squares, in order to find a fuzzy relation between inputs and outputs of system for producing a fuzzy model of glucoseinsulin system. At last the performance of obtained model with regard to the same inputs is compared with responses of 21 st order metabolic model of Sorensen

A new hybrid cascaded switched-capacitor reduced switch multilevel inverter for renewable sources and domestic loads

This multilevel inverter type summarizes an output voltage of medium voltage based on a series connection of power cells employing standard configurations of low-voltage components. The main problems of cascaded switched-capacitor multilevel inverters (CSCMLIs) are the harmful reverse flowing current of inductive loads, the large number of switches, and the surge current of the capacitors. As the number of switches increases, the reliability of the inverter decreases. To address these issues, a new CSCMLI is proposed using two modules containing asymmetric DC sources to generate 13 levels. The main novelty of the proposed configuration is the reduction of the number of switches while increasing the maximum output voltage. Despite the many similarities, the presented topology differs from similar topologies. Compared to similar structures, the direction of some switches is reversed, leading to a change in the direction of current flow. By incorporating the lowest number of semiconductors, it was demonstrated that the proposed inverter has the lowest cost function among similar inverters. The role of switched-capacitor inrush current in the selection of switch, diode, and DC source for inverter operation in medium and high voltage applications is presented. The inverter performance to supply the inductive loads is clarified. Comparison of the simulation and experimental results validates the effectiveness of the proposed inverter topology, showing promising potentials in photovoltaic, buildings, and domestic applications. A video demonstrating the experimental test, and all manufacturing data are attached. © 2013 IEEE