Heat Generation in Multilayer Piezoelectric Actuators |
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| Authors: | Jiehui Zheng Sadayuki Takahashi Shoko Yoshikawa Kenji Uchino J W C de Vries |
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| Affiliation: | International Center for Actuators and Transducers, Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802;Ceramic Innovation Center, Philips Components B.V, Bredeweg 10, 6042 GG Roermond, The Netherlands |
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| Abstract: | Multilayer piezoelectric actuators when driven under high frequency, generate significant heat, which influences the reliability and other piezoelectric properties. In this paper, heat generation in various types of multilayer PZT-based actuators was studied. Experimental results showed that heat generation is mainly caused by ferroelectric hysteresis loss in the stress-free state. A simplified analytic method was established to evaluate the temperature rise, which is useful for the design of multilayer and other high-power actuators. |
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