ACTUATOR 2014 Manuskript Poster 74


Author: Hubert Borgmann
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Pages: 4
Language: English
Publication date: 26/05/2015
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Manuscript Poster 74 published in Conference Proceedings ACTUATOR 2014
Temperature Compensation Method for Piezoelectric Self Sensing Actuators

E. Grasso, H. Janocha
Universität des Saarlandes, Saarbrücken, Germany

Abstract:
Piezoelectric vibration applications often experience temperature variations due to environmental changes as well as self heating of the piezoelectric actuators. It is well known that piezoelectric materials change their parameters when subjected to temperature changes. Therefore self sensing techniques can be strongly disturbed as they are based on certain parameters of the piezoelectric self sensing actuator. This paper addresses the problem of measuring the temperature of self sensing piezoelectric transducers without the usage of additional sensor elements. By adding a third wire soldered on the negative electrode, one can measure the temperature of the piezoelectric electrode by means of the Seebeck effect. An electronic circuit capable of measuring simultaneously voltage, charge and temperature of a piezoelectric material is then presented. Finally experimental results demonstrate the effectiveness of the proposed approach.
El vendedor asume toda la responsabilidad de esta entrada.
Hubert Borgmann, MESSE BREMEN,
Project Manager ACTUATOR, International Conference and Exhibition on New Actuators and Drive Systems, Bremen, Germany, and Editor of the ACTUATOR Conference Proceedings (www.actuator.de)
Project Manager ITHEC, International Conference and Exhibition on Thermoplastic Composites, Bremen, Germany, and Editor of the ITHEC Conference Proceedings (www.ithec.de)

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