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

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• 作者：R. Zanasi ; F. Grossi ; N. Giuliani
• 关键词：Dynamic modeling ; Power-Oriented Graphs ; State space transformation ; Model reduction
• 刊名：Mechatronics
• 出版年：February, 2014
• 年：2014
• 卷：24
• 期：1
• 页码：1-11
• 全文大小：1973 K

文摘

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 鈥淧ower-Oriented Graphs鈥?(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.