Concept

Ultrasonic motor

Publications associées (24)

Dynamical Modelling and Position Control of Ultrasonic Piezoelectric Positioning Stage

The paper describes development of a feedback position controller for a new type of monolithic "hybrid" ultrasonic motor. The goal of the controller design was to demonstrate the main advantage of this piezoelectric motor – high speed and high accuracy at ...

2006

Modeling and optimization of ultrasonic linear motors

José Fernandez Lopez

Ultrasonic motors have received much attention these last years, in particular with regard to their modeling and their design principle. Their operating principle is based on piezoelectric ceramics that convert electrical energy into mechanical energy in t ...

EPFL2006

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

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

Analytical and numerical modeling of an ultrasonic stepping motor using standing waves

Yves Perriard, José Fernandez Lopez

Piezoelectric motors (usually called ultrasonic) show interesting characteristics. Not only they deliver high torques at low speeds but their structure confers to them a braking torque without energy supply. This paper firstly present a list of possible so ...

2004

Piezoelectric response and polarization switching in small anisotropic perovskite particles

Nava Setter, Marco Cantoni, Enrico Colla, Roman Gysel

A hydrothermal processing route was used to produce anisotropic submicrometer particles of potassium niobate-tantalates and pure potassium niobate. Piezoelectric activity, switching polarization, and piezoelectric hysteresis loops were observed in these fe ...

2004

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

Influences to the mechanical performances of the travelling wave ultrasonic motor by varying the prestressing force between stator and rotor

Yves Perriard, Matteo Bullo

Based on a mathematical model, simulation results show how the mechanical performances of the motor are sensitive to the prestressing force. A test bench has been developed in the laboratory for experimental measurements. The motor is driven by a two-phase ...

IEEE2003

Performance analysis and optimization of the travelling wave ultrasonic motor

Yves Perriard, Matteo Bullo

We will present a method allowing to evaluate the mechanical performances (torque, speed, mechanical power, dissipated losses in the surface of contact between stator and rotor) of the travelling wave ultrasonic motors. The visualization of the motor chara ...

2002

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