JPS57129183A - Rotation controller for motor - Google Patents

Rotation controller for motor

Info

Publication number
JPS57129183A
JPS57129183A JP56013412A JP1341281A JPS57129183A JP S57129183 A JPS57129183 A JP S57129183A JP 56013412 A JP56013412 A JP 56013412A JP 1341281 A JP1341281 A JP 1341281A JP S57129183 A JPS57129183 A JP S57129183A
Authority
JP
Japan
Prior art keywords
radius
motor
rotating speed
moved
detector
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
JP56013412A
Other languages
Japanese (ja)
Other versions
JPH0327985B2 (en
Inventor
Makoto Iwazawa
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP56013412A priority Critical patent/JPS57129183A/en
Publication of JPS57129183A publication Critical patent/JPS57129183A/en
Publication of JPH0327985B2 publication Critical patent/JPH0327985B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/24—Arrangements for providing constant relative speed between record carrier and head

Abstract

PURPOSE:To improve the rotation controlling accuracy of a motor by detecting the recording radius and controlling the rotating speed of the motor with the detected output, thereby maintaining the product of the rotating speed by the radius constantly. CONSTITUTION:This controller has a fine feed and moving distance detector 4 which moves a reflecting mirror 5 upon reception of the power of a motor 3 and detects the moved distance of the mirror, and a control circuit 6 which receives the output of the detector 4 and delivers a certain preset oscillation frequency after the radius is varied. When the recording position is moved, for example, by 1mm. by the detector 4 to produce a pulse signal, and applies preset oscillation signal as a reference signal to comparators 7, 10 after the radius is moved by 1mm., thereby maintaining the product of the rotating speed and the recording radius constantly.
JP56013412A 1981-01-31 1981-01-31 Rotation controller for motor Granted JPS57129183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56013412A JPS57129183A (en) 1981-01-31 1981-01-31 Rotation controller for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56013412A JPS57129183A (en) 1981-01-31 1981-01-31 Rotation controller for motor

Publications (2)

Publication Number Publication Date
JPS57129183A true JPS57129183A (en) 1982-08-11
JPH0327985B2 JPH0327985B2 (en) 1991-04-17

Family

ID=11832414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56013412A Granted JPS57129183A (en) 1981-01-31 1981-01-31 Rotation controller for motor

Country Status (1)

Country Link
JP (1) JPS57129183A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147528A (en) * 1974-08-30 1976-04-23 Voest Ag Shijirooru mataha kudoroorunyotsute enkojonosokorojoosokokanona 1 mataha fukusukonobunpaishaojusururenzokuchuzosetsubi
JPS5412816A (en) * 1977-06-30 1979-01-30 Sony Corp Isolinear velocity controller of rotary recording media
JPS55101161A (en) * 1978-11-16 1980-08-01 Mca Disco Vision Device for rotating information stored disk

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147528A (en) * 1974-08-30 1976-04-23 Voest Ag Shijirooru mataha kudoroorunyotsute enkojonosokorojoosokokanona 1 mataha fukusukonobunpaishaojusururenzokuchuzosetsubi
JPS5412816A (en) * 1977-06-30 1979-01-30 Sony Corp Isolinear velocity controller of rotary recording media
JPS55101161A (en) * 1978-11-16 1980-08-01 Mca Disco Vision Device for rotating information stored disk

Also Published As

Publication number Publication date
JPH0327985B2 (en) 1991-04-17

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