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Displacement and blocking force measurements of piezoelectric macroactuators.

Lodeiro, M J; Stewart, M; Cain, M G (2005) Displacement and blocking force measurements of piezoelectric macroactuators. NPL Report. DEPC-MPR 040

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A novel experimental system has been designed to characterise the static blocking force of piezoelectric macroactuators. These measurements are of particular interest to manufacturers and end-users alike for comparison of devices for specific applications. This was successfully used to map the full force-deflection response of new commercially available macroactuator designs: a co-fired multilayer actuator, a stress-biased domed unimorph and a planar bimorph.
The system design, instrumentation, software automation, calibration and compliance are discussed in detail, highlighting important aspects of the measurement procedure and precautions/pitfalls.
The results obtained showed some non-linear actuator behaviour in the load-displacement traces, as well as providing invaluable insights into hysteresis and time dependent properties of the actuation load or displacement produced with driving voltage.

Item Type: Report/Guide (NPL Report)
NPL Report No.: DEPC-MPR 040
Keywords: actuator, hysteresis, non-linearity
Subjects: Advanced Materials
Advanced Materials > Functional Materials
Last Modified: 02 Feb 2018 13:16
URI: http://eprintspublications.npl.co.uk/id/eprint/3372

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