JPS6489979A - Method of driving supersonic motor - Google Patents

Method of driving supersonic motor

Info

Publication number
JPS6489979A
JPS6489979A JP62245166A JP24516687A JPS6489979A JP S6489979 A JPS6489979 A JP S6489979A JP 62245166 A JP62245166 A JP 62245166A JP 24516687 A JP24516687 A JP 24516687A JP S6489979 A JPS6489979 A JP S6489979A
Authority
JP
Japan
Prior art keywords
voltage
fed
control
current
frequency
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP62245166A
Other languages
Japanese (ja)
Other versions
JP2583904B2 (en
Inventor
Osamu Kawasaki
Takahiro Nishikura
Katsu Takeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62245166A priority Critical patent/JP2583904B2/en
Publication of JPS6489979A publication Critical patent/JPS6489979A/en
Application granted granted Critical
Publication of JP2583904B2 publication Critical patent/JP2583904B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/14—Drive circuits; Control arrangements or methods

Abstract

PURPOSE:To achieve stable starting and operation, by controlling the frequency of driving voltage to be applied onto a piezoelectric member based on a phase difference between flow-in current and driving voltage to be applied onto the piezoelectric member constituting a vibration member. CONSTITUTION:In a drive circuit for a supersonic motor, output from a sweeping voltage generator 7 is fed through a selector 8 to the control terminal C of a voltage control oscillator 9. The oscillator 9 sweeps the frequency band close to resonant frequency of a vibration member 3 from higher region to lower region according to control voltage to be applied. Output therefrom is splitted into two and one is fed through a 90 deg. phase shifter 10 to a variable gain power amplifier 11 while the other is fed as it is to a variable gain power amplifier 12 so as to drive the vibration member 3. Current flowing through a mechanical arm is detected through a resistor R connected to one input terminal of a piezoelectric member 2 and a current detector 14. Applied driving voltage is detected through a voltage detector 13. Then the detected current and voltage are fed through a phase difference detector 15, a phase comparator 16 and a selector 8 to the voltage control oscillator 9 in order to control the driving frequency.
JP62245166A 1987-09-29 1987-09-29 Ultrasonic motor driving method Expired - Lifetime JP2583904B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62245166A JP2583904B2 (en) 1987-09-29 1987-09-29 Ultrasonic motor driving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62245166A JP2583904B2 (en) 1987-09-29 1987-09-29 Ultrasonic motor driving method

Publications (2)

Publication Number Publication Date
JPS6489979A true JPS6489979A (en) 1989-04-05
JP2583904B2 JP2583904B2 (en) 1997-02-19

Family

ID=17129589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62245166A Expired - Lifetime JP2583904B2 (en) 1987-09-29 1987-09-29 Ultrasonic motor driving method

Country Status (1)

Country Link
JP (1) JP2583904B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03273876A (en) * 1990-03-22 1991-12-05 Matsushita Electric Ind Co Ltd Driving method of supersonic motor
KR100703205B1 (en) * 2005-11-07 2007-04-06 삼성전기주식회사 An apparatus for controling the driving of piezoelectric ultrasonic motor
JP2015211604A (en) * 2014-04-30 2015-11-24 セイコーエプソン株式会社 Piezoelectric actuator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139871A (en) * 1984-07-28 1986-02-26 Marcon Electronics Co Ltd Piezoelectric linear motor
JPS6292781A (en) * 1985-10-18 1987-04-28 Matsushita Electric Ind Co Ltd Ultrasonic motor device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139871A (en) * 1984-07-28 1986-02-26 Marcon Electronics Co Ltd Piezoelectric linear motor
JPS6292781A (en) * 1985-10-18 1987-04-28 Matsushita Electric Ind Co Ltd Ultrasonic motor device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03273876A (en) * 1990-03-22 1991-12-05 Matsushita Electric Ind Co Ltd Driving method of supersonic motor
KR100703205B1 (en) * 2005-11-07 2007-04-06 삼성전기주식회사 An apparatus for controling the driving of piezoelectric ultrasonic motor
JP2015211604A (en) * 2014-04-30 2015-11-24 セイコーエプソン株式会社 Piezoelectric actuator
US10044295B2 (en) 2014-04-30 2018-08-07 Seiko Epson Corporation Piezoelectric actuator and robot

Also Published As

Publication number Publication date
JP2583904B2 (en) 1997-02-19

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term