by Matthias Hunstig, Tobias Hemsel, Walter Sextro
Abstract:
This contribution provides a systematic investigation and performance comparison of different modes of operation for piezoelectric inertia drives. The movement of these motors is classically assumed to consist of steps involving stiction and sliding, resulting in the term ``stick-slip drives''. In the first part of this contribution it has been found that using ideal driving signals, ``slip-slip'' operation without phases of stiction allows very high velocities, while the maximum velocity is limited principally in stick-slip operation. In this part it is shown that slip-slip operation is also suitable for use with real actuators, driven with frequency-limited versions of the ideal signals presented in part I. The motional performance of the motor as well as its wear and the required electric power are investigated for operation with different signals. It is found that for high velocity inertia motors it is recommendable to use actuators with large stroke and to drive them with a signal consisting of two harmonics at a high fundamental frequency, a result that is supported by similar setups implemented experimentally by other authors. Using Lanczos' \sigma factors to calculate the frequency-limited excitation signals instead of standard Fourier series additionally increases the motor performance significantly. The results help motor designers to choose the appropriate mode of operation and to optimise the motor parameters for their individual applications.
Reference:
Hunstig, M.; Hemsel, T.; Sextro, W.: Stick-slip and slip-slip operation of piezoelectric inertia drives - Part II: Frequency-limited excitation. Sensors and Actuators A: Physical, volume 200, 2013. (Selected Papers from the 9th International Workshop on Piezoelectric Materials and Applications in Actuators)
Bibtex Entry:
@ARTICLE{Hunstig2013c,
author = {Matthias Hunstig and Tobias Hemsel and Walter Sextro},
title = {Stick-slip and slip-slip operation of piezoelectric inertia drives
- Part II: Frequency-limited excitation},
journal = {Sensors and Actuators A: Physical},
year = {2013},
volume = {200},
pages = {79 - 89},
note = {<ce:title>Selected Papers from the 9th International Workshop on
Piezoelectric Materials and Applications in Actuators</ce:title>},
abstract = {This contribution provides a systematic investigation and performance
comparison of different modes of operation for piezoelectric inertia
drives. The movement of these motors is classically assumed to consist
of steps involving stiction and sliding, resulting in the term ``stick-slip
drives''. In the first part of this contribution it has been found
that using ideal driving signals, ``slip-slip'' operation without
phases of stiction allows very high velocities, while the maximum
velocity is limited principally in stick-slip operation. In this
part it is shown that slip-slip operation is also suitable for use
with real actuators, driven with frequency-limited versions of the
ideal signals presented in part I. The motional performance of the
motor as well as its wear and the required electric power are investigated
for operation with different signals. It is found that for high velocity
inertia motors it is recommendable to use actuators with large stroke
and to drive them with a signal consisting of two harmonics at a
high fundamental frequency, a result that is supported by similar
setups implemented experimentally by other authors. Using Lanczos'
\sigma factors to calculate the frequency-limited excitation signals
instead of standard Fourier series additionally increases the motor
performance significantly. The results help motor designers to choose
the appropriate mode of operation and to optimise the motor parameters
for their individual applications.},
bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/S0924424712007248},
bdsk-url-2 = {http://dx.doi.org/10.1016/j.sna.2012.11.043},
doi = {http://dx.doi.org/10.1016/j.sna.2012.11.043},
file = {Hunstig2013c.pdf:Hunstig2013c.pdf:PDF},
keywords = {Inertia motor},
timestamp = {2013.09.26},
url = {http://www.sciencedirect.com/science/article/pii/S0924424712007248}
}