Extended and reduced POG dynamic model of an automatic corking machine for threaded plastic caps

The aim of this work is to show how the modeling of an electromechanical system can be addressed using the energy-based graphical modeling technique named “Power-Oriented Graphs” (POG). Differences and analogies of POG against Bond Graphs modeling technique are discussed. The paper presents the POG...

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Bibliographic Details
Published in:Mechatronics (Oxford) 2014-02, Vol.24 (1), p.1-11
Main Authors: Zanasi, R., Grossi, F., Giuliani, N.
Format: Article
Language:English
Subjects:
Automation
Bond graphs
Dynamic modeling
Dynamic models
Dynamical systems
Dynamics
Mechatronics
Model reduction
Power-Oriented Graphs
Screws
State space transformation
Threaded
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Summary:The aim of this work is to show how the modeling of an electromechanical system can be addressed using the energy-based graphical modeling technique named “Power-Oriented Graphs” (POG). Differences and analogies of POG against Bond Graphs modeling technique are discussed. The paper presents the POG dynamic model of an automatic corking machine for threaded plastic caps: the system is composed by two electric motors moving a ball screw/spline that realizes the linear/rotary motion necessary to screw a plastic cap on a bottle. First an extended POG model is presented, together with the equivalent Bond Graph model, then some proper congruent state space transformations and a POG-based graphical method are introduced to transform and reduce the system dynamic model. Simulation and experimental results are finally presented and compared.
ISSN:0957-4158
1873-4006
DOI:10.1016/j.mechatronics.2013.11.002