KR900015367A - 변위발생장치 - Google Patents

변위발생장치 Download PDF

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Publication number
KR900015367A
KR900015367A KR1019900002463A KR900002463A KR900015367A KR 900015367 A KR900015367 A KR 900015367A KR 1019900002463 A KR1019900002463 A KR 1019900002463A KR 900002463 A KR900002463 A KR 900002463A KR 900015367 A KR900015367 A KR 900015367A
Authority
KR
South Korea
Prior art keywords
constant voltage
driving voltage
equal
voltage
actuator
Prior art date
Application number
KR1019900002463A
Other languages
English (en)
Inventor
곤도유
도미오 오노
Original Assignee
아오이 죠이찌
가부시끼가이샤 도시바
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 아오이 죠이찌, 가부시끼가이샤 도시바 filed Critical 아오이 죠이찌
Publication of KR900015367A publication Critical patent/KR900015367A/ko

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/802—Drive or control circuitry or methods for piezoelectric or electrostrictive devices not otherwise provided for
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2041—Beam type
    • H10N30/2042—Cantilevers, i.e. having one fixed end

Abstract

내용 없음.

Description

변위발생장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1구체적 실시예에 따른 변위발생장치의 개략적인 단면도,
제5도는 본 발명에 따른 제2구체적 실시예인 변위발생장치의 개략적인 단면도.

Claims (5)

  1. 여러층으로 쌓아올린 2개의 전왜판(12),(14) 그리고 2개의 전왜판(12),(14) 사이에 놓인 내측전극(12b),(14b) 및 전왜판(12),(14) 외측에 배열된 2개의 외측전극(12a),(14a)을 포함하는 액추에이터(10)로 구성된 바이모르프 구조의 전왜 액추에이터(10)와, 전왜 액추에이터(10)에 구동 전압을 공급하는, 즉 내측전극(12b),(14b)에 구동전압을 공급하며, 외측전극(12a),(14a)의 한편에는 구동전압의 최대값 이상의 정전압을 인가하며, 그리고 외측전극(12a),(14a)의 다른편에는 구동전압의 최소값이하의 정전압을 인가하도록 된 공급장치(18)를 구비하는 것을 특징으로 하는 변위발생장치.
  2. 여러층으로 겹쳐 쌓여진 M개(M2)의 진왜판과, 외측 및 전왜판들 사이에 배치된N+1개의 전극을 포함하는 바이모르프구조의 전왜 액추에이터와, 전왜 액추에이터에 구동전압을 공급하는 즉(N+2n) 번째층(1<N<M+1:n=0,±1,±2,…) 전극에 구동전압을 공급하고, (N+1+2n) 번째층 (n=0,l,2,…)전극에 구동전압의 최대값 이상의 정전압을 공급하며,(N-1-2n) 번째층 (n=0,1,2,…) 전극에는 구동전압의 최소값 이상의 정전압을 인가하도록 된 공급장치를 구비한 것을 특징으로 하는 변위발생장치.
  3. 제2항에 있어서, 상기의 N은 M이 짝수일때는되도록 주어지며, M이 홀수일때는되도록 주어지는 것을 특징으로 하는 변위발생장치.
  4. 제1항에 있어서, 최대값 이상 그리고 최소값 이하의 상기의 정전압이 공급장치에 인가되는 정전압과 같은 것을 특징으로 하는 변위발생장치.
  5. 제2항에 있어서, 최대값 이상 최소값 이하인 상기의 정전압이 공급장치에 인가되는 정전압과 같은 것을 특징으로 하는 변위발생장치.
    ※참고사항:최초출원 내용에 의하여 공개하는 것임.
KR1019900002463A 1989-03-14 1990-02-23 변위발생장치 KR900015367A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1061635A JPH02240977A (ja) 1989-03-14 1989-03-14 変位発生装置
JP01-061635 1989-03-14

Publications (1)

Publication Number Publication Date
KR900015367A true KR900015367A (ko) 1990-10-26

Family

ID=13176855

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900002463A KR900015367A (ko) 1989-03-14 1990-02-23 변위발생장치

Country Status (4)

Country Link
US (1) US5083056A (ko)
EP (1) EP0388027A3 (ko)
JP (1) JPH02240977A (ko)
KR (1) KR900015367A (ko)

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US5410205A (en) * 1993-02-11 1995-04-25 Hewlett-Packard Company Ultrasonic transducer having two or more resonance frequencies
US5473214A (en) * 1993-05-07 1995-12-05 Noise Cancellation Technologies, Inc. Low voltage bender piezo-actuators
FR2719160B1 (fr) * 1994-04-22 1996-06-14 France Etat Armement Dispositif piézo-électrique à polarisation variable.
FR2719181B1 (fr) * 1994-04-22 1996-06-14 France Etat Armement Dispositif piézo-sensible à polarisation variable.
EP0762088A3 (de) * 1995-09-11 1997-11-05 Georg Fischer Rohrleitungssysteme AG Verfahren und Vorrichtung zur Grenzstanderfassung von Flüssigkeiten und Schüttgütern
JP3183177B2 (ja) * 1996-08-13 2001-07-03 株式会社村田製作所 加速度センサ
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Also Published As

Publication number Publication date
EP0388027A3 (en) 1991-03-27
JPH02240977A (ja) 1990-09-25
EP0388027A2 (en) 1990-09-19
US5083056A (en) 1992-01-21

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