JPS6413256A - Speed controller - Google Patents

Speed controller

Info

Publication number
JPS6413256A
JPS6413256A JP62168959A JP16895987A JPS6413256A JP S6413256 A JPS6413256 A JP S6413256A JP 62168959 A JP62168959 A JP 62168959A JP 16895987 A JP16895987 A JP 16895987A JP S6413256 A JPS6413256 A JP S6413256A
Authority
JP
Japan
Prior art keywords
voltage value
control signal
speed
voltage
comes
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
JP62168959A
Other languages
Japanese (ja)
Inventor
Yoshihiro Matsushima
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP62168959A priority Critical patent/JPS6413256A/en
Publication of JPS6413256A publication Critical patent/JPS6413256A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To facilitate speed control by using a voltage value maintained, when a speed signal generation output corresponding to the speed of an object to be controlled coincides with the frequency of a reference signal as the voltage value of a drive control signal. CONSTITUTION:A control signal W varying according to respective areas is supplied to a driver 23 so as to supply current quantity in proportion to the voltage ratio of the control signal at respective points of time to a spindle motor 24 to rotate a disk 1. When a normal state is achieved, a comparison output U from a comparator 13 comes to L-level and a switch circuit is opened and the voltage value immediately before is maintained in a capacitor 20 as the voltage value of the control signal W. The current of corresponding quantity to this voltage value is supplied to the spindle motor 24 and comes to be a reference voltage value for maintaining a steady state. Accordingly, it is unnecessary to set previously a prescribed voltage for maintaining the steady state of the object to be controlled.
JP62168959A 1987-07-07 1987-07-07 Speed controller Pending JPS6413256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62168959A JPS6413256A (en) 1987-07-07 1987-07-07 Speed controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62168959A JPS6413256A (en) 1987-07-07 1987-07-07 Speed controller

Publications (1)

Publication Number Publication Date
JPS6413256A true JPS6413256A (en) 1989-01-18

Family

ID=15877728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62168959A Pending JPS6413256A (en) 1987-07-07 1987-07-07 Speed controller

Country Status (1)

Country Link
JP (1) JPS6413256A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054014A (en) * 1989-02-15 1991-10-01 Sony Corporation Optical disk recording/reproducing apparatus and rotary drive therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054014A (en) * 1989-02-15 1991-10-01 Sony Corporation Optical disk recording/reproducing apparatus and rotary drive therefor

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