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Trial Manufacturing of Ultrasonic Linear Motors

Research Project

Project/Area Number 01850038
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field 機械要素
Research InstitutionSophia University

Principal Investigator

UCHINO Kenji  Sophia Univ., Dept. Physics, Assoc. Prof., 理工学部, 助教授 (00108226)

Co-Investigator(Kenkyū-buntansha) TOHDA Masayuki  Nissan Motors, Central Lab., Principal Sci., 中央研究所・材料研究所, 主任
OHNISHI Kazumasa  Alps Electric, Nagaoka Branch, Manager, 新潟事業部・長岡工場, 課長
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 1990: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1989: ¥4,800,000 (Direct Cost: ¥4,800,000)
KeywordsUltrasonic Linear Motor / Piezoelectric Vibrator / Servo Analyzer / HIP Sintering / Electromechanical Coupling / Mechanical Quality Factor / Laser Doppler Method / 振動子 / HIP / 積層型圧電体 / 楕円軌跡 / レ-ザ・ドップラ / 有限要素法 / 超音波モ-タ / 大電圧駆動 / インピ-ダンス
Research Abstract

The development of new ultrasonic linear motors has been made focusing on the following three points : (A) manufacturing piezoelectric ceramics with high mechanical strength, (B) impedance measurement of a piezoelectric resonator under high ac drive voltage, (C) design of the elastic vibrators and the construction of the ultrasonic motors.
(A) The ultrasonic actuators are driven by the piezoelectric ceramics, and in this case the ceramic is suffered from large mechanical load. In order to improve the mechanical strength of the piezoceramics, we have tried HIP (hot-isostatic press) sintering and composite designs with alumina ceramic whiskers. Bending strength was increased by 30% and by 10% for the above two methods, respectively.
(B) High as voltage is usually applied on the ultrasonic motors. We have set up a new impedance measuring system of the piezoelectric vibrator under high voltage. Several piezoceramics were used for the measurement, resulting that the electromechanical coupling factor k increases and the mechanical quality factor Q decreases remarkably with increasing the ac drive voltage.
(C) - shaped ultrasonic linear motors with two legs and two multilayered piezoelectric actuators have been trial manufactured. Theoretically, the tips of the two legs move on similar ellipsoidal traces with the same rotation direction. The ellipsoidal trace was numerically analyzed using the finite element method in consideration of the internal mechanical loss.
The actual motors were manufactured and the vibration mode of the legs was checked by a laser Doppler method. Typical motor characteristics are summarized as follows : size - 18 mm x 36 mm x 5 mm, drive frequency -90 kHz, thrust - 400 gf, speed - 20 cm/sec.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] K.Uchino: "Micro Walking Machines Using Piezoelectric Actuators" J.Rob.Mech.1. 124-127 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Ohnishi, T.Morohashi and K.Uchino: "Mix Sintering of Ferroelectric Materials Using HIP" Jpn.J.Appl.Phys.28ー2. 74-76 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Ohnishi and T.Morohashi: "Studies on the Characteristics of Ceramic Fiber Reinforced Piezoelectric Ceramics" Jpn.J.Appl.phys.28ー2. 71-73 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Uchino, H.Negishi and T.Hirose: "Drive Voltage Dependence of Electromechanical Resonance in PLZT piezoelectric Ceramics" Jpn.J.Appl.Phys.28ー2. -47-49 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 大西 一正,諸橋 毅史 内野 研二: "微粒子チタン酸バリウムのHIP焼結" 日本セラミックス協会学術論文誌. 97. 473-477 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Uchino: "Micro Walking Machines Using Piezoelectric Actuators" J. Rob. Mech. 1. 124-127 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Ohnishi, T. Morohashi and K. Uchino: "Mix Sintering of Ferroelectric Materials Using HIP" Jpn. J. Appl. Phys. 28, Suppl 28-2. 74-76 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Ohnishi and T. Morohashi: "Studies on the Characteristics of Ceramic Fiber Reinforced Piezoelectric Ceramics" Jpn. J. Appl. Phys. 28, Suppl. 28-2. 71-73 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Uchino, H. Negishi and T. Hirose: "Drive Voltage Dependence of Electromechanical Resonance in PLZT Piezoelectric Ceramics" Jpn. J. Appl. Phys. 28, Suppl. 28-2. 47-49 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Ohnishi, T. Morohashi and K. Uchino: "HIP Sintering of Ultra-fine Barium Titanate Powder" J. Jpn. Ceram. Soc. 97. 473-477 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Uchino,H.Negishi,and T.Hirose: "Drive Voltage Dependence of Electromechanical Resonarce in PLZT Piezoelectric Ceramics" Jpn.J.Appl.Phys. 28ー2. 47-49 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] K.Uchino and T.Fushimi: "Drive Voltage Dependence of Piezoelectric Resonance" 窯業協会論文誌.

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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