V.P. Babenko - Ph.D. (Eng.), Associate Professor, Moscow Technological University (MIREA). E-mail: babenko@mirea.ru V.K. Bityukov - Dr.Sc. (Eng.), Professor, Head of Department, Moscow Technological University (MIREA). E-mail: bitukov@mirea.ru D.S. Simachkov - Senior Lecturer, Moscow Technological University (MIREA). E-mail: vovagr@mail.ru

Of late the practice has been developed of a two-stage designing of automatic electric drives with advanced control system (mechatronic systems). It is common that at the first stage simulation is performed using the Matlab / Simulink software, and then at the second stage the circuit simulation is realized on the basis of such known packages as OrCAD, PSpice, DesignLab, Workbench. Though these programs have undoubted advantages in terms of their universality and accuracy of modeling, they are quite expensive, require highly skilled designers, need much time to master, and high requirements for computer characteristics. In some of the cases, particularly in assessment modeling of electromechanical systems, both stages of modeling can be combined into a single stage by using the simulator program for electronic circuits called Electronics Workbench (EWB), which has for quite a while been successfully used in teaching practice and engineering. This program, characterized by its user-friendly feature and intuitive interface, is easy to learn and not so expensive (earlier demo versions are available in the Internet for free). It allows to simulate analog, digital and mixed digital-and-analog electronic circuits, to investigate the characteristics of electromechanical devices working with a DC motor. In this paper the issues are considered of modeling using EWB DC drive with digital control and analog-to-digital encoder in the feedback loop.

 

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