JPS5655A - Control unit for rotating speed - Google Patents
Control unit for rotating speedInfo
- Publication number
- JPS5655A JPS5655A JP7423479A JP7423479A JPS5655A JP S5655 A JPS5655 A JP S5655A JP 7423479 A JP7423479 A JP 7423479A JP 7423479 A JP7423479 A JP 7423479A JP S5655 A JPS5655 A JP S5655A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- switching
- circuit
- slope
- revolutions
- 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
Links
Landscapes
- Control Of Velocity Or Acceleration (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE: To safely perform the switching of number of revolutions, by switching the number of revolutions through the change of delay time in the delay circuit and switching the slope of the slope part of the trapezoid wave signal and the frequency characteristics of the integrating circuit through interlocking with the switching.
CONSTITUTION: The output of the frequency generator 8 detecting the rotating speed of VTR, etc. is fed to the servo IC having two functions of speed and phase controls, and the delay time of the externally mounted circuit 29 of the speed reference MM13 is changed with the switching signal generating circuit 33, allowing to selectively change the number of revolutions of the motor 7. Further, in interlocking with this, the slope of the slope part of the trapezoid signal is switched with the externally mounted circuits 30, 31 of the trapezoid circuits 14, 20 and the frequency characteristics of the integration circuit 54 is switched by giving the speed error output to the circuit 54. Accordingly, in interlocking with the speed switching ratio, the speed slope sensitivity and the frequency characteristics are switched, allowing to perform stable control even at the time of speed change of several times or more.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7423479A JPS5655A (en) | 1979-06-12 | 1979-06-12 | Control unit for rotating speed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7423479A JPS5655A (en) | 1979-06-12 | 1979-06-12 | Control unit for rotating speed |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5655A true JPS5655A (en) | 1981-01-06 |
Family
ID=13541264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7423479A Pending JPS5655A (en) | 1979-06-12 | 1979-06-12 | Control unit for rotating speed |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5655A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61154379A (en) * | 1984-12-27 | 1986-07-14 | Toshiba Corp | High speed reproducing device of video tape recorder |
US4723900A (en) * | 1985-03-01 | 1988-02-09 | Kt-Suunnittelu Oy | Extruder for casting concrete slabs |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50145114A (en) * | 1974-05-10 | 1975-11-21 | ||
JPS5284416A (en) * | 1975-12-29 | 1977-07-14 | Matsushita Electric Ind Co Ltd | Speed control device for dc motors |
JPS5379507A (en) * | 1976-12-23 | 1978-07-14 | Sony Corp | Recorder/reproducer |
-
1979
- 1979-06-12 JP JP7423479A patent/JPS5655A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50145114A (en) * | 1974-05-10 | 1975-11-21 | ||
JPS5284416A (en) * | 1975-12-29 | 1977-07-14 | Matsushita Electric Ind Co Ltd | Speed control device for dc motors |
JPS5379507A (en) * | 1976-12-23 | 1978-07-14 | Sony Corp | Recorder/reproducer |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61154379A (en) * | 1984-12-27 | 1986-07-14 | Toshiba Corp | High speed reproducing device of video tape recorder |
US4723900A (en) * | 1985-03-01 | 1988-02-09 | Kt-Suunnittelu Oy | Extruder for casting concrete slabs |
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