Publication

Development of a CNC Surface Vibration Scanning System

2019
Student Projects

Abstract

The EPFL – LAI is investigating novel haptic technologies for rendering rich vibrotactile feedback in digital musical interfaces. The main objective is to develop an interactive surface that is able to render a multi-touch vibrotactile stimulus using piezoelectric actuators and wave focusing strategies. Scanning the surface to obtain the peaks and displacement is key during the development and characterization of the whole system. The goal of this project is to develop a system that can measure small vibrations (in the order of 2 – 20 um) that are produced in the different points of a surface, when different waveforms are transmitted to the surface using piezoelectric transducers. This project will allow you to get hands-on experience with the software and hardware integration of a 3-axis CNC table, a waveform generator, a laser Doppler vibrometer, and an oscilloscope.

Official source

https://infoscience.epfl.ch/entities/publication/898c639b-41cd-44d4-9028-83e6cd490dcf

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2019
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/898c639b-41cd-44d4-9028-83e6cd490dcf

About this result

Related concepts (32)

Electronic musical instrument

An electronic musical instrument or electrophone is a musical instrument that produces sound using electronic circuitry. Such an instrument sounds by outputting an electrical, electronic or digital audio signal that ultimately is plugged into a power amplifier which drives a loudspeaker, creating the sound heard by the performer and listener. An electronic instrument might include a user interface for controlling its sound, often by adjusting the pitch, frequency, or duration of each note.

Piezoelectric motor

A piezoelectric motor or piezo motor is a type of electric motor based on the change in shape of a piezoelectric material when an electric field is applied, as a consequence of the converse piezoelectric effect. An electrical circuit makes acoustic or ultrasonic vibrations in the piezoelectric material, most often lead zirconate titanate and occasionally lithium niobate or other single-crystal materials, which can produce linear or rotary motion depending on their mechanism.

Piezoelectricity

Piezoelectricity (ˌpiːzoʊ-,_ˌpiːtsoʊ-,_paɪˌiːzoʊ-, piˌeɪzoʊ-,_piˌeɪtsoʊ-) is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied mechanical stress. The word piezoelectricity means electricity resulting from pressure and latent heat. It is derived (an ancient source of electric current). The piezoelectric effect results from the linear electromechanical interaction between the mechanical and electrical states in crystalline materials with no inversion symmetry.

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Development of a CNC Surface Vibration Scanning System

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