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Advances in Mechatronics '11

Special issue for conference AiM’11


Between December 7 th to 9 th 2011 the conference Advances in Mechatronics ‘11 was held oh the Faculty of Military Technology of University of Defence.

The most important articles were chosen and published in the Cybernetic Letters, the partner of the conference.

2012-04-24 07:53

Wheeled Chassis - Kinematic Design of Handling Platform

Jiří FISCHER

Abstract


The article deals with the problem of mechanism’s kinematics of a handling platform which is intended for a manipulation with sensors of wheeled chassis. It solves a selection of a suitable kinematic chain of the mechanism, and for the selected scheme it solves kinematics of the end of the chain’s motion. To solve the kinematic variables the matrix method of calculation has been used.

Keywords


Robot, Kinematics, Sensor
Full paper

2012-04-13 10:10

Minimal Energy Effect

Dusan MAGA, Sona PAVLIKOVA

Abstract


The basic ideas, as well as the possible way of technical interpretation of the Principle of MinimalEnergy Effect will be presented in the paper, followed by practical examples. Based on these the reader will beable to follow the principle and build an understandable theory on professional numerical methods basics, theirspossible advantages and disadvantages and shortcomings. The main idea presented in the paper is based on verysimple example – motion in the gravitational field of the earth. The paper is based on [1] presented during 6thAdvances in Mechatronics 2011 in Brno, fulfilled with detailed results of authors yet unpublished.

Keywords


Numerical methods, Applied mathematics, Minimal energy effect, Education
Full paper

2012-04-13 09:24

Business Process Modeling and Simulation with the Stress on the Roles in Process

Miroslav MARTINEK, Michal MRAJCA, Zdenek BRABEC

Abstract


The paper introduces an original approach for role-based business process modelling, simulation and analysis. A developed process for modelling and simulation is suitable for systematic construction of the simulation models and their efficient and effective improvement.

Keywords


Business Process Modelling, Business Process Simulation
Full paper

2012-04-12 09:41

Research of Conductive Currents in Traction Drive with PMSM

Radovan DOLEČEK, Jaroslav NOVÁK, Ondrej ČERNÝ

Abstract


The paper deals with the significant results of the research of the conductive current harmonic spectrum in traction drive with permanent magnet synchronous motors (PMSM). The research was done in the experimental workplace with a real traction drive for wheel vehicles. The spectrums were analyzed by the specialized device on the basis of a central measuring station. The knowledge of marked subharmonic components of stator winding currents is the most significant finding of this research. The frequencies of these components are given by frequency multiples of mechanical speeds. The subharmonic components also pass to DC current at the traction inverter input site. This fact is particularly important from the viewpoint of legislative requirements to electromagnetic compatibility (EMC) of drive with railway interlocking devices.

Keywords


Harmonic Spectrum, Current, Traction Drive, Converter, Component
Full paper

2012-04-11 21:30