Original scientific paper

Modelling and simulation of dynamic behaviour of electric motor driven mechanisms

Zoran Marinković ; University of Niš, Faculty of Mechanical Engineering, A. Medvedeva 14, 18000 Niš, Serbia
Dragan Marinković orcid.org/0000-0002-3583-9434 ; Technical University Berlin, Institute of Mechanics, Straße des 17. Juni 135, 10623 Berlin, Germany
Goran Petrović ; University of Niš, Faculty of Mechanical Engineering, A. Medvedeva 14, 18000 Niš, Serbia
Predrag Milić orcid.org/0000-0001-7778-6097 ; University of Niš, Faculty of Mechanical Engineering, A. Medvedeva 14, 18000 Niš, Serbia

Abstract

The paper reviews simplified equivalent torsional models as an efficient approach to modelling and simulating dynamic behaviour of electric motor driven mechanisms. The focus is put on preliminary design phase. Motion of the masses is described by a system of second-order non-homogeneous differential equations. The solution yields the law of motion as well as the torque function in the elastic bonds between the masses. Special attention is dedicated to accurate modelling of electric motor characteristics and resistant forces acting on executive parts of drive mechanisms. Stochastic nature of resistant forces is also considered. The aim is to demonstrate that the combination of a simplified model with an accurate description of drive and load torques produces satisfactory results, which are, therefore, useful in furthering the design process. Two examples involving drive mechanisms of a crane and a bucket-wheel excavator illustrate the approach.

Keywords

electric motor drive; equivalent torsional model; simulation; crane; bucket-wheel excavator

Hrčak ID:

93517

URI

https://hrcak.srce.hr/93517

Publication date:

12.12.2012.

Article data in other languages: croatian

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