센서학회지 (Journal of Sensor Science and Technology)

  • 제24권4호
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  • Pages.228-231
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  • 2015
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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Ring-Type Rotary Ultrasonic Motor Using Lead-free Ceramics

  • Hong, Chang-Hyo (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology) ;
  • Han, Hyoung-Su (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology) ;
  • Lee, Jae-Shin (School of Materials Science and Engineering, University of Ulsan) ;
  • Wang, Ke (State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University) ;
  • Yao, Fang-Zhou (State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University) ;
  • Li, Jing-Feng (State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University) ;
  • Gwon, Jung-Ho (HanaUtech) ;
  • Quyet, Nguyen Van (HanaUtech) ;
  • Jung, Jin-Kyung (School of Materials Science and Engineering, University of Ulsan) ;
  • Jo, Wook (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
  • 투고 : 2015.07.14
  • 심사 : 2015.07.20
  • 발행 : 2015.07.31
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초록

Ultrasonic motors provide high torques and quick responses compared to their magnetic counterparts; therefore, they are widely used in small-scale applications such as mobile phones, microrobots, and auto-focusing modules in digital cameras. To determine the feasibility of lead-free piezoceramics for ultrasonic motor applications, we fabricated a ring-type piezoceramic with a KNN-based lead-free piezoceramic (referred to as CZ5), intended for use in an auto-focusing module of a digital camera. The vibration of the lead-free stator was observed at 45.1 kHz. It is noteworthy that the fully assembled lead-free ultrasonic motor exhibited a revolution speed of 5-7 rpm, even though impedance matching with neighboring components was not considered. This result suggests that the tested KNN-based piezoceramic has great potential for use in ultrasonic motor applications, requiring minimal modifications to existing lead-based systems.

키워드

참고문헌

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피인용 문헌

  1. Sintering of Lead-Free Piezoelectric Sodium Potassium Niobate Ceramics vol.8, pp.12, 2015, https://doi.org/10.3390/ma8125449
  2. Lead-free piezoceramics – Where to move on? vol.2, pp.1, 2016, https://doi.org/10.1016/j.jmat.2015.12.002
  3. Tailoring Low-field Strain Properties of [0.97Bi1/2(Na0.78K0.22)1/2TiO3-0.03LaFeO3]-Bi1/2(Na0.82K0.18)1/2TiO3Lead-Free Relaxor/Ferroelectric Composites vol.29, pp.6, 2016, https://doi.org/10.4313/JKEM.2016.29.6.342
  4. Hardening behavior and highly enhanced mechanical quality factor in (K 0.5 Na 0.5 )NbO 3 –based ceramics vol.37, pp.5, 2017, https://doi.org/10.1016/j.jeurceramsoc.2017.01.013
  5. Applications of lead-free piezoelectric materials vol.43, pp.08, 2018, https://doi.org/10.1557/mrs.2018.180