The field of electric drives provides a broad spectrum of applications with different power demands, utilized motor types or different environment requirements. Lot of applications are characterized by very high demands on accuracy and dynamic properties and have attribute of…

Electric servodrives are characterized by precise tracking and its derivations. The way to meet this goal cost them a number of obstacles, whether variations associated with end-stage of astatism, changes in the positioning system parameters or to changes in load…

The paper deals with the problems of safety communication in industrial networks for purpose of assurance of functional safety. It is intents on analysis of treats on industry networks and there is described recommended safety protections and their location into…

In 2005, all civilised worl will remind the 100 years anniversary of Publishing the original work on special theory of relativity by Albert Einstein. This contribution is a brief review of its principial ideas in the field of electrodynamics., In…

In present article a dynamic model of universal motors, based on the measured data is developed. Suppose that the supply voltage is harmonic and motor operate in open circuit loop. After representing of the mathematical model a simulation model based…