JPS6447283A - Ultrasonic motor controller - Google Patents

Ultrasonic motor controller

Info

Publication number
JPS6447283A
JPS6447283A JP62203641A JP20364187A JPS6447283A JP S6447283 A JPS6447283 A JP S6447283A JP 62203641 A JP62203641 A JP 62203641A JP 20364187 A JP20364187 A JP 20364187A JP S6447283 A JPS6447283 A JP S6447283A
Authority
JP
Japan
Prior art keywords
motor
turning angle
signal
rotor
piezoelectric body
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
JP62203641A
Other languages
Japanese (ja)
Inventor
Ritsuo Inaba
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 JP62203641A priority Critical patent/JPS6447283A/en
Publication of JPS6447283A publication Critical patent/JPS6447283A/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 control an apparatus with a good accuracy by comparing a signal from a motor turning angle detector with a reference signal and by controlling power application to a piezoelectric body through a motor control circuit on the basis of the result of said comparison. CONSTITUTION:An ultrasonic motor 25 is composed of a disc rotor, a ring stator, a running material, a piezoelectric body and others; and the rotor face is provided with a resistor and a terminal area so that a rotor turning angle may be detected. A controller for said motor is composed of a control signal oscillator 21, a motor turning angle detector 22 consisting of said resistor and terminal area, a comparison circuit 23, and a motor control circuit 24. Thus, when the wavelength of a motor turning angle signal 22a is longer than that of a triangular wave signal 21a, a power application interval for said piezoelectric body is shortened and the rotation of said rotor is quickened.
JP62203641A 1987-08-17 1987-08-17 Ultrasonic motor controller Pending JPS6447283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62203641A JPS6447283A (en) 1987-08-17 1987-08-17 Ultrasonic motor controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62203641A JPS6447283A (en) 1987-08-17 1987-08-17 Ultrasonic motor controller

Publications (1)

Publication Number Publication Date
JPS6447283A true JPS6447283A (en) 1989-02-21

Family

ID=16477408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62203641A Pending JPS6447283A (en) 1987-08-17 1987-08-17 Ultrasonic motor controller

Country Status (1)

Country Link
JP (1) JPS6447283A (en)

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