To take single-phase PWM rectifier as AFE of cascaded H-bridge multi-level frequency converter can satisfy requirement that electric drive system of coal mine hoist must have capacity of bidirectional energy flowing, but there are third harmonic in its AC-side current because of the second ripple of output voltage.To slove the Color Show Define Wax
Fixed Time Disturbance Observer Based Sliding Mode Control for a Miniature Unmanned Helicopter Hover Operations in Presence of External Disturbances
This paper presents a novel fixed time sliding mode disturbance observer (FTSMDO) based second-order fixed time sliding mode control (FTSMC) for small scale unmanned helicopter to do hover operations in the presence of Color Show Define Wax external disturbances.Sliding mode control is insensitive to matched uncertainties but sensitive to mismatche
Color blindness among multiple sclerosis patients in Isfahan
Background: Multiple Collections sclerosis (MS) is a disease of young and middle aged individuals with a demyelinative axonal damage nature in central nervous system that causes various signs and symptoms.As color vision needs normal function of optic nerve and macula, it is proposed that MS can alter it via influencing optic nerve.In this survey,
Advances in T Cells Based on Inflammation in Metabolic Diseases
With the increasing incidence of metabolic diseases year by year and their impact on the incidence of cardiovascular diseases, metabolic diseases have attracted great attention as a major health care problem, but there is still no effective treatment.Oxidative stress and inflammation are the main mechanisms leading to metabolic diseases.T cells are