by Matthias Hunstig, Tobias Hemsel, Walter Sextro
Abstract:
Piezoelectric inertia motors use the inertia of a body to drive it by means of a friction contact in a series of small steps. These motors can operate in ``stick-slip'' or ``slip-slip'' mode, with the fundamental frequency of the driving signal ranging from several Hertz to more than 100 kHz. To predict the motor characteristics, a Coulomb friction model is sufficient in many cases, but numerical simulation requires microscopic time steps. This contribution proposes a much faster simulation technique using one evaluation per period of the excitation signal. The proposed technique produces results very close to those of timestep simulation for ultrasonics inertia motors and allows direct determination of the steady-state velocity of an inertia motor from the motion profile of the driving part. Thus it is a useful simulation technique which can be applied in both analysis and design of inertia motors, especially for parameter studies and optimisation.
Reference:
Hunstig, M.; Hemsel, T.; Sextro, W.: An efficient simulation technique for high-frequency piezoelectric inertia motors. Ultrasonics Symposium (IUS), 2012 IEEE International, 2012. (Preprint: https://groups.uni-paderborn.de/ldm/publications/download/Hunstig2012.pdf)
Bibtex Entry:
@INPROCEEDINGS{Hunstig2012,
author = {Matthias Hunstig AND Tobias Hemsel AND Walter Sextro},
title = {An efficient simulation technique for high-frequency piezoelectric
inertia motors},
booktitle = {Ultrasonics Symposium (IUS), 2012 IEEE International},
year = {2012},
pages = {277-280},
abstract = {Piezoelectric inertia motors use the inertia of a body to drive it
by means of a friction contact in a series of small steps. These
motors can operate in ``stick-slip'' or ``slip-slip'' mode, with
the fundamental frequency of the driving signal ranging from several
Hertz to more than 100 kHz. To predict the motor characteristics,
a Coulomb friction model is sufficient in many cases, but numerical
simulation requires microscopic time steps. This contribution proposes
a much faster simulation technique using one evaluation per period
of the excitation signal. The proposed technique produces results
very close to those of timestep simulation for ultrasonics inertia
motors and allows direct determination of the steady-state velocity
of an inertia motor from the motion profile of the driving part.
Thus it is a useful simulation technique which can be applied in
both analysis and design of inertia motors, especially for parameter
studies and optimisation.},
bdsk-url-1 = {http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6562147},
bdsk-url-2 = {http://dx.doi.org/10.1109/ULTSYM.2012.0068},
comment = {Preprint: \url{https://groups.uni-paderborn.de/ldm/publications/download/Hunstig2012.pdf}},
doi = {10.1109/ULTSYM.2012.0068},
file = {Hunstig2012.pdf:Hunstig2012.pdf:PDF},
issn = {1948-5719},
keywords = {friction;ultrasonic motors;Coulomb friction model;efficient simulation
technique;friction contact;high-frequency piezoelectric inertia motor;motor
characteristics prediction;numerical simulation;slip-slip mode;stick-slip
mode;time-step simulation;ultrasonic inertia motor;Acceleration;Acoustics;Actuators;Computational
modeling;Friction;Numerical models;Steady-state},
timestamp = {2013.09.26},
url = {http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6562147}
}