Study on the control of precise actuator with piezoelectric stack pump

Fan, Zunqiang; Liu, Jianfang; Yang, Zhigang; Li, Jianqiao

doi:10.1109/iccae.2010.5451771

Cited by 1 publication

(1 citation statement)

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“…In contrast, actuators as utilized, for example, in piezoelectric fuel injectors usually operate at frequencies of several tens or hundreds of hertz. [32][33][34][35] This discrepancy in applied frequencies raises the question whether the above mentioned lead-free large-strain materials are subject to a significant frequency-dependence and whether they are still able to deliver high strains even at a)…”

Section: Introductionmentioning

confidence: 99%

Frequency-dependence of large-signal properties in lead-free piezoceramics

Dittmer

Aulbach

et al. 2012

Journal of Applied Physics

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Articles you may be interested in Local structure change evidenced by temperature-dependent elastic measurements: Case study on Bi1/2Na1/2TiO3-based lead-free relaxor piezoceramics J. Appl. Phys. 115, 084108 (2014) The dependence of large signal properties of (1Àx)(0.81Bi 1/2 Na 1/2 TiO 3 -0.19Bi 1/2 K 1/2 TiO 3 )-xBi(Zn 1/2 Ti 1/2 )O 3 with x ¼ 0.02, 0.03, and 0.04 on the measurement frequency was investigated for a wide range of frequencies from 0.1 Hz to 100 Hz. A significant frequency dispersion in the characteristic parameters representatively maximum and coercive values was denoted. On extension with the temperature dependent dielectric permittivity measurement, it was shown that the observed frequency dependence is primarily correlated with the dynamics of field-induced phase transition from a relaxor state to a long-range ferroelectric state. Increasing the substitutional disorder introduced by Bi(Zn 1/2 Ti 1/2 )O 3 addition was demonstrated to pronounce the frequency dependence. It was proposed that the change be due to the increase in random fields and consequent dominance of ergodicity, based on the frequency-dependent hysteresis measurements at an elevated temperature above so-called induced-ferroelectric-to-relaxor transition temperature.

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Section: Introductionmentioning

confidence: 99%