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Influence of Piezoelectric Actuator Geometry on Resonant Vibrating Amplitude

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Indirect position control of a piezoelectric motor

Piezoelectric motors are particular motors converting electrical energy into mechanical movement, based on the inverse piezoelectric effect. Piezoelectric material, when electrical field applied, produces acoustic or ultrasonic vibrations. These vibrations ...

2009

The gas flow rate increase obtained by an oscillating piezoelectric actuator on a micronozzle

Jürgen Brugger

Micronozzles with piezoelectric actuator were fabricated and investigated. The micronozzles were fabricated in glass substrates using a powderblasting technique, and the actuator is a bimorph structure made from a piezoelectric polymer. The actuator was lo ...

2008

Unified mechanical approach to piezoelectric bender modeling

Jean-Marc Breguet, Robert Dunsch

Anewanalytical modeling approach for piezoelectric bending elements is described. The approach is based on the beam theory under quasi-static equilibrium condition. It uses the theory of superposition of piezoelectric action in the bender and external mome ...

2007

Development of actuators using PVDF piezoelectric polymer

Jürgen Brugger

Piezoelectricity is the propriety of materials that relates mechanical deformation as a function of applied voltage and vice-versa. The advantage of using these materials as actuators is the fast response and low power consumption when compared with tradit ...

2006

Study and optimization of a linear piezoelectric actuator

Léon Alexandre Berger

Miniswys motor (property of Miniswys SA) is a piezoelectric, ultrasonic, linear motor intended to be integrated in an optical system for mobile phones. With the aim of continually optimizing their product, Miniswys SA has signed a collaboration agreement w ...

2006

Actuation Methods for Applications in MR Environments

Hannes Bleuler, Dominique Chapuis, Roger Gassert, Etienne Burdet, Ludovic Dovat

The choice of an adequate actuation method is a central issue in the development of any mechatronic device and strongly determines the dynamic performances of the system. This choice is particularly difficult for robotic systems working within a magnetic r ...

2006

Piezoelectric actuator with passive gap for push-pull motion

Jean-Marc Breguet, Arvid Bergander

The invention relates to a Stick-Slip piezoelectric actuator comprising a piezoelectric element with active zones and passive zones, said active zones being transversally deformable by applying different voltages, said passive zones not being actively defo ...

2004

High resolution miniature rotary microactuator

Jean-Marc Breguet, Walter Driesen

For the development of high precision mobile microrobots with a size of about one cm3, capable of micromanipulation tasks, small and precise actuators have to be developed in order to provide the microrobot and its manipulation tools with the required degr ...

2004

Lead free piezoelectric materials

Nava Setter, Dragan Damjanovic

Lead oxide based ferroelectrics, represented by lead zirconate titanate (Pb(Zr,Ti)O-3) or PZT) are the most widely used materials for piezoelectric actuators, sensors and transducers due to their excellent piezoelectric properties. Considering lead toxicit ...

2004

Monolithic piezoelectric push-pull actuators for inertial drives

Jean-Marc Breguet, Walter Driesen

In many miniature systems for positioning and especially in microrobotics the assembly of the components becomes difficult. At sizes of systems of a few cm2 not only the assembly becomes more difficult, downscaling also means that single parts become more ...

2003