System Identification of a Nonlinear One-Degree-of-Freedom Vibrating System

Lök, Şefika İpek; Pappalardo, Carmine Maria; Regina, Rosario La; Malgaca, Levent

doi:10.1007/978-3-031-31066-9_38

Cited by 1 publication

(1 citation statement)

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“…What has been described is valid exclusively for symmetrical containers concerning a single axis. Otherwise, for each main axis of the section of the container, there is a fundamental mode [25,26]. Based on the hypotheses made, a one-dimensional model was developed consisting of a trolley subject to motion that translated along the horizontal direction, visible in Figure 2b, in which a linear damper was connected to the pendulum to add to the model the dissipative characteristics given by the viscosity and by the friction created between the fluid and the container [27].…”

Section: Methodsmentioning

confidence: 99%

Multibody Analysis of Sloshing Effect in a Glass Cylinder Container for Visual Inspection Activities

De Simone,

Veneziano,

Pace

et al. 2024

Applied Sciences

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This paper addresses the phenomenon of sloshing and the issues that arise during liquid handling at visual inspection stations. The pharmaceutical industry, recently put under pressure by the pandemic, has long adopted modular solutions consisting mainly of robotic islands. This work focuses on a visual inspection island for glass vials and ampules called VRU. This machine uses robotic arms to optimize the inspection process and enables automated control of a wide range of products using image recognition techniques and AI algorithms. However, the handling of containers in the presence of liquids requires special precautions to avoid the occurrence of bubbles inside the fluid that can prevent the cameras from correctly capturing any defects present. The banal solution involves a drastic reduction in the speeds and accelerations to which the liquids are subjected. However, using appropriate techniques makes it possible to achieve performance values similar to those obtainable when manipulating solid materials. The developed algorithms were tested using multibody simulations in the Mathworks Simscape environment and then validated using a six-axis Fanuc robot. In this study, however, the analysis conducted aimed to determine the correlations between trajectories, laws of motion, and sloshing in containers handled at high speed in industrial applications. In this study a multibody model was developed using a CFD analysis. The container consisted of a glass vial for pharmaceutical uses containing a liquid inside. The results obtained from the CFD analysis allowed us to calibrate the multibody model for the next phase of optimization of the laws of motion to be followed by the manipulator.

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Section: Methodsmentioning

confidence: 99%