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JPS6485587A - Controller of ultrasonic motor - Google Patents

Controller of ultrasonic motor

Info

Publication number
JPS6485587A
JPS6485587A JP62241229A JP24122987A JPS6485587A JP S6485587 A JPS6485587 A JP S6485587A JP 62241229 A JP62241229 A JP 62241229A JP 24122987 A JP24122987 A JP 24122987A JP S6485587 A JPS6485587 A JP S6485587A
Authority
JP
Japan
Prior art keywords
frequency
ultrasonic motor
variable oscillator
voltage
motor
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.)
Pending
Application number
JP62241229A
Other languages
Japanese (ja)
Inventor
Masaru Nakahama
Hiromi Nomura
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 JP62241229A priority Critical patent/JPS6485587A/en
Publication of JPS6485587A publication Critical patent/JPS6485587A/en
Pending 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

Landscapes

  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

PURPOSE:To enable starting an ultrasonic motor stably at low voltage even if characteristics of said motor undergo a change, by operating a frequency sweep means for varying the frequency of AC voltage only at the time of starting an ultrasonic motor. CONSTITUTION:When H level is given to a control terminal 13 to start an ultrasonic motor 6, a variable oscillator control circuit 1 turns ON a variable oscillator 2 and at the same time sweeps the output frequency of said variable oscillator 2 from a high frequency to a low frequency. The AC output of said variable oscillator 2 is applied to an ultrasonic motor 6 via a 90 deg. phase shifter circuit 3 and power amplifier circuits 4, 5. When a speed detection circuit 11 detects that the speed of a mover 19 has reached a given value, the sweepage of frequency by the variable oscillator 2 is stopped and the AC voltage with a frequency at that point of time continues to be applied to the ultrasonic motor 6.
JP62241229A 1987-09-25 1987-09-25 Controller of ultrasonic motor Pending JPS6485587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62241229A JPS6485587A (en) 1987-09-25 1987-09-25 Controller of ultrasonic motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62241229A JPS6485587A (en) 1987-09-25 1987-09-25 Controller of ultrasonic motor

Publications (1)

Publication Number Publication Date
JPS6485587A true JPS6485587A (en) 1989-03-30

Family

ID=17071122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62241229A Pending JPS6485587A (en) 1987-09-25 1987-09-25 Controller of ultrasonic motor

Country Status (1)

Country Link
JP (1) JPS6485587A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217883A (en) * 1990-09-01 1992-08-07 Kubota Corp Controller for ultrasonic motor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59156168A (en) * 1983-02-23 1984-09-05 Canon Inc Controller for vibration wave motor
JPS62203575A (en) * 1985-11-20 1987-09-08 Nippon Kogaku Kk <Nikon> Surface wave motor utilizing ultrasonic vibration

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59156168A (en) * 1983-02-23 1984-09-05 Canon Inc Controller for vibration wave motor
JPS62203575A (en) * 1985-11-20 1987-09-08 Nippon Kogaku Kk <Nikon> Surface wave motor utilizing ultrasonic vibration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217883A (en) * 1990-09-01 1992-08-07 Kubota Corp Controller for ultrasonic motor

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