Publication

Design of a Miniature Short-Stroke Constant-Force Linear Actuator

Yves Perriard, Romain David Besuchet
2013
Conference Papers

Résumé

This paper presents the modelling, design and testing of a short-stroke linear actuator to be embedded in a battery-powered positioning device. The particularity of this small (1 cm3) electromagnetic actuator is that it has to provide a constant force along its nominal stroke (1 mm), required by the specifications. In order to achieve this goal, an analytical and two Finite-Element-Method-based models have been developed. A genetic algorithm that takes the force profile into account is used to maximise the nominal thrust force of the actuator. The prototype shows a force profile that has less than 4% of deviation over the stroke and a nominal thrust force of 1.35 N. © (2013) Trans Tech Publications, Switzerland.

Source officielle

https://infoscience.epfl.ch/entities/publication/fc3c4f1c-488e-4296-8dfe-a80cdff8add5

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Yves Perriard, Romain David Besuchet
2013
Conference Papers

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/fc3c4f1c-488e-4296-8dfe-a80cdff8add5

À propos de ce résultat

Concepts associés (10)

Linear actuator

A linear actuator is an actuator that creates motion in a straight line, in contrast to the circular motion of a conventional electric motor. Linear actuators are used in machine tools and industrial machinery, in computer peripherals such as disk drives and printers, in valves and dampers, and in many other places where linear motion is required. Hydraulic or pneumatic cylinders inherently produce linear motion. Many other mechanisms are used to generate linear motion from a rotating motor.

Actionneur

Dans une machine, un actionneur est un objet qui transforme l’énergie qui lui est fournie en un phénomène physique qui fournit un travail, modifie le comportement ou l’état d'un système. Dans les définitions de l’automatisme, l’actionneur appartient à la partie opérative d'un système automatisé. On peut classer les actionneurs suivant différents critères : énergie utilisée ; phénomène physique utilisable ; principe mis en œuvre. vignette|Deux actionneurs pneumatiques à crémaillère (Automax, à gauche et en haut), contrôlant chacun une vanne.

Valve actuator

A valve actuator is the mechanism for opening and closing a valve. Manually operated valves require someone in attendance to adjust them using a direct or geared mechanism attached to the valve stem. Power-operated actuators, using gas pressure, hydraulic pressure or electricity, allow a valve to be adjusted remotely, or allow rapid operation of large valves. Power-operated valve actuators may be the final elements of an automatic control loop which automatically regulates some flow, level or other process.

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