A Networked Production System to Implement Virtual Enterprise and Product Lifecycle Information Loops

Avventuroso, Giuseppe; Silvestri, Marco; Pedrazzoli, Paolo

doi:10.1016/j.ifacol.2017.08.902

Cited by 47 publications

(18 citation statements)

References 8 publications

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“…Fig. 5 shows four classical solutions [15], [16]: three directed to minimizing residual vibrations (cycloidal, Gutman 1-3, Freudenstein 1-3) while the last one (trapezoidal) mainly used in order to limit the maximum acceleration, or to obtain a velocity constant piece of law, as in Fig. 5.…”

Section: A Motion Eventsmentioning

confidence: 99%

Motion Law Assisted Design to Reduce the Vibrational Effect of Controlled Axes in Automated Machines

Silvestri¹

2019

IJRTE

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The vibrational effects created by machines moving parts is strictly related with the characteristics of the law of motion they implement, both in case of cam-follower devices and in case of servo system electronic cam controls. One of the most effective way to prevent these harmful phenomena is to limit the harmonic content of the law of motion by designing their curve as a combination of few, low frequencies, sinusoidal curves, but this often makes difficult to satisfy other functional requirements like precision points or constant speed intervals. In this work an original method to solve this problem is illustrated. It adds to the programming language CamOMiLe new functions to assist the functional design of mechanisms. The combination of the classical theory results with the flexibility of CamOMiLe building block approach makes possible to address a large number of practical applications and two examples of them are illustrated.

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Section: A Motion Eventsmentioning

confidence: 99%

Motion Law Assisted Design to Reduce the Vibrational Effect of Controlled Axes in Automated Machines

Silvestri¹

2019

IJRTE

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“…1. This kind of machinery is largely used in food industry [3] and its optimization through simple and inexpensive solutions is of great interest for mass production lines of packaging [4], [5]. The main obstacle to the increase of productivity is given by the motion of the welding head, which is not uniform, with acceleration and deceleration to return to the starting point of the cycle after the phase of welding and cutting.…”

Section: Introductionmentioning

confidence: 99%

Dynamics Modeling and Optimization of a Wrapper Flow Pack Mechanism

Silvestri¹

2019

IJRTE

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Abstract: This paper is about a mechanical solution to vibration problem of a wrapper flow pack mechanism, which is used in packaging industry. The target mechanism is the welding head of the machine where the vibration is generated, due to eccentric masses rotating with a cut-on-the-fly motion law. Consequently, production rate is limited by the vibration at 200 pieces per minute. To reduce the vibration so that the production rate can exceed over 200 ppm, two ways of improvements are considered. The first one is optimizing the motion law. The other one consists in mechanical modifications which eliminates or balance out the inertia forces derived from the eccentric rotating mass. This research implements the second way of adding balance weights and discusses the properties of it. During analysis, the software ADAMS which provides kinematic simulation is used as the analytical tool to test and examine the solutions proposed.

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“…The approach followed is part of a more general trend that, in recent years, has seen a growing interest in replacing traditional solutions with more innovative ones that arise from the integration of special 3D printed components integrated into mechatronic systems [2], [3].The implementation of the electric drive system for the rudders must ensure the performances and the reliability according to the regulations of the American Bureau of Shipping (ABS), which will be considered as the reference also for the load calculations [4], [5].…”

Section: Introductionmentioning

confidence: 99%

An Innovative Electric Ship Steering Systems, Analysis and Implementation

Silvestri¹,

Cucchi²,

Confalonieri³

2019

IJMPERD

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Ship's steering systems have changed over the ages, driven by the need for more powerful and reliable systems. Nowadays the normal practice for ship's steering systems lies into hydraulic solutions because of their excellent characteristics in terms of performances and reliability. However, the modern advancements in the electric drives field, give insights to compare the two systems, with attention to the lower masses and costs enabled by electric drives adoption. This paper describes this comparison, downstream to the conceptual design purpose of an electric drive system suited for ships of about 500 tons of load displacement and 50 m of overall length. The results confirm the hypothesis, laying the foundations for the development of ship's steering systems inspired by this studied solution.

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A Networked Production System to Implement Virtual Enterprise and Product Lifecycle Information Loops

Cited by 47 publications

References 8 publications

Motion Law Assisted Design to Reduce the Vibrational Effect of Controlled Axes in Automated Machines

Motion Law Assisted Design to Reduce the Vibrational Effect of Controlled Axes in Automated Machines

Dynamics Modeling and Optimization of a Wrapper Flow Pack Mechanism

An Innovative Electric Ship Steering Systems, Analysis and Implementation

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