Piezo-Hydraulic Linear Actuator For Vibration Control

A piezo-hydraulic linear actuator ( 1 ) for controlling the vibrations through a piezoceramic element ( 7 ) that acts onto a proper liquid placed inside a cavity ( 3 ) (similar to a Helmholtz resonator configuration) by means of a flexible metallic membrane ( 8 ). The equipment whose vibrations must...

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Bibliographische Detailangaben
1. Verfasser:	BISERNI MARIO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ELECTRICITY ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A piezo-hydraulic linear actuator ( 1 ) for controlling the vibrations through a piezoceramic element ( 7 ) that acts onto a proper liquid placed inside a cavity ( 3 ) (similar to a Helmholtz resonator configuration) by means of a flexible metallic membrane ( 8 ). The equipment whose vibrations must be controlled is fastened to a mobile plate ( 4 ) placed onto anyone of the cavity walls. The cavitation phenomena can be avoided by using two piezoceramic elements ( 7,9 ) acting onto the liquid in phase opposition one with respect the other one. The actuator can be designed to control the vibrations on one, two or three axes.