Concept

Piezoelectric motor

Related publications (103)

Sensitivity Analysis and Optimization of a Standing Wave Ultrasonic Linear Motor

This paper presents the sensitivity analysis of an ultrasonic linear motor using design of experiments (DOE) and the finite element (FE) optimization of its deformation amplitude. A first ultrasonic linear motor prototype has been built at the laboratory. ...

2006

Sensorless Speed Control of Traveling Wave Ultrasonic Motor

Yves Perriard, Markus Flückiger, Matteo Bullo

Ultrasonic motors are a good alternative to electromagnetic motors in medical robotics, since they are electromagnetically compatible. Estimating speed instead of using encoders reduces cost and dimension of the robot on the one hand and increases reliabil ...

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

Hybrid Ultrasonic Motor and Electrorheological Clutch System for MR-Compatible Haptic Rendering

Hannes Bleuler, Dominique Chapuis, Roger Gassert, Etienne Burdet

Using haptic interfaces in combination with functional magnetic resonance imaging (fMRI) could lead to important insights into the brain mechanisms of human motor control and related dysfunctions. However, in addition to the usual requirements for haptic i ...

IEEE2006

Comparative study and selection criteria of linear motors

Samuel Chevailler

Initially, linear motors have been particularly dedicated to transportation systems. Nowadays, linear motors are meant to replace a system using a rotating motor and a transmission to realize a linear movement. With linear motors the performances increase ...

EPFL2006

FMRI compatible haptic interface actuated with traveling wave ultrasonic motor

Yves Perriard, Dominique Chapuis, Roger Gassert, Markus Flückiger, Matteo Bullo

We are developing haptic interfaces compatible with functional Magnetic Resonance Imaging (fMRI) for neuroscience studies. The presented prototype with one rotary degree of freedom is actuated by a traveling wave ultrasonic motor operating under admittance ...

2005

Modélisation et commande du moteur piézoélectrique à onde progressive

Matteo Bullo

Piezoelectric motors are resonant vibromotors. They represent a new actuator generation in the field of servo-drives. In particular, the travelling wave ultrasonic motor presents a high torque at low speed, a zero speed torque without feeding, low sensitiv ...

EPFL2005

Linear motors for Multi Mobile Systems

Yves Perriard, Marcel Jufer, Samuel Chevailler

In large cities, due to expensive land price, high-rise buildings are built, in which the space dedicated to the elevators is considerable and reduces the rented surfaces. To decrease these lost surfaces, a Multi Mobile System is proposed: it consists of s ...

2005

Design optimization analysis of a standing wave ultrasonic linear actuator

Yves Perriard, José Fernandez Lopez, Yann Ruffieux

The design, properties and optimization of an ultrasonic actuator are presented. Numerical modeling has been carried out and simulations with the FEM Ansys software have been realized. To avoid performing a large number of simulations, input parameters lik ...

2005

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

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