JPS5520529A - Speed control unit - Google Patents

Speed control unit

Info

Publication number
JPS5520529A
JPS5520529A JP9263278A JP9263278A JPS5520529A JP S5520529 A JPS5520529 A JP S5520529A JP 9263278 A JP9263278 A JP 9263278A JP 9263278 A JP9263278 A JP 9263278A JP S5520529 A JPS5520529 A JP S5520529A
Authority
JP
Japan
Prior art keywords
output
circuit
control variable
speed
signal
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
JP9263278A
Other languages
Japanese (ja)
Inventor
Masahiko Fujita
Kazutoshi Konno
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9263278A priority Critical patent/JPS5520529A/en
Publication of JPS5520529A publication Critical patent/JPS5520529A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Velocity Or Acceleration (AREA)

Abstract

PURPOSE: To obtain DC output corresponding to the amplitude of the tachogenerator independently of the fundamental frequency of the tachognerator and to perform control by detecting the speed variation in fluctuating at the frequencies of 0 to ∞ for the control variable.
CONSTITUTION: When the control variable 24 is operated, the tachognerators 31a and 31b output the fundamental waves in sinusoidal shape in which the amplitude is in proportional to the speed of the control variable 24 and the phases are different by 90° each other. The output of the tachogenerators 31a and 31b is squared at the square circuits 32a and 32b connected respectively with the 31a and 31b. The outputs of the square circuits 32a and 32b are added at the addition circuit 33. The output of the circuit 33 is made to 1/2 power at the 1/2 power circuit 34. The output is DC speed signal in proportional to the speed of the control variable 24. The output is compared with the reference signal s at the comparison circuit 22 to output a signal having a deviation with s. The drive circuit 23 amplifies the output of the comparison circuit 22 and feeds it to 24.
COPYRIGHT: (C)1980,JPO&Japio
JP9263278A 1978-07-31 1978-07-31 Speed control unit Pending JPS5520529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9263278A JPS5520529A (en) 1978-07-31 1978-07-31 Speed control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9263278A JPS5520529A (en) 1978-07-31 1978-07-31 Speed control unit

Publications (1)

Publication Number Publication Date
JPS5520529A true JPS5520529A (en) 1980-02-14

Family

ID=14059810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9263278A Pending JPS5520529A (en) 1978-07-31 1978-07-31 Speed control unit

Country Status (1)

Country Link
JP (1) JPS5520529A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879235U (en) * 1981-11-24 1983-05-28 安藤電気株式会社 Tunable wavelength light source

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54138474A (en) * 1978-04-19 1979-10-26 Mitsubishi Electric Corp Speed detecting method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54138474A (en) * 1978-04-19 1979-10-26 Mitsubishi Electric Corp Speed detecting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879235U (en) * 1981-11-24 1983-05-28 安藤電気株式会社 Tunable wavelength light source

Similar Documents

Publication Publication Date Title
JPS5683284A (en) Variable speed operating device for induction motor
SE7907237L (en) phase detection circuit
JPS53114608A (en) Defect detector
JPS5520529A (en) Speed control unit
JPS5265806A (en) Frequency generator
JPS5627664A (en) Single-phase ac signal phase detector
GB2005845A (en) A circuit for instantaneously measuring the time-varying amplitude of a sinusoidal wave
JPS54146567A (en) Frequency-voltage converter circuit
JPS5520414A (en) Rotation speed detector
JPS5442712A (en) Electric car controlling system
JPS53127257A (en) Frequency-voltage convertor
JPS5250268A (en) Ac signal period-dc converting device
JPS5446320A (en) Detecting method of slip or slip frequency
JPS5375751A (en) Speed detector
JPS5520413A (en) Speed detection unit
JPS5318942A (en) Frequency multiplication circuit
JPS5515070A (en) Phase angle detection unit
JPS5431526A (en) Current controller for synchronous motor
JPS54151075A (en) Monitoring method for vibration of rotary blade
JPS5475023A (en) Motor speed controller
JPS5372120A (en) Control device of alternating current motor
JPS52104167A (en) Amplitude computing device
JPS5421506A (en) Rotation/frequency converter for motor
JPS53123978A (en) Phase discriminator
JPS5341967A (en) Wave form shaping circuit