JPS5786761A - Low speed detection circuit - Google Patents

Low speed detection circuit

Info

Publication number
JPS5786761A
JPS5786761A JP16366780A JP16366780A JPS5786761A JP S5786761 A JPS5786761 A JP S5786761A JP 16366780 A JP16366780 A JP 16366780A JP 16366780 A JP16366780 A JP 16366780A JP S5786761 A JPS5786761 A JP S5786761A
Authority
JP
Japan
Prior art keywords
signal
proportional
omega
speed
detection
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
JP16366780A
Other languages
Japanese (ja)
Inventor
Takanobu Iwagane
Kenji Hirose
Tomokichi Suzuki
Toru Matsuura
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.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Manufacturing 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 Yaskawa Electric Manufacturing Co Ltd filed Critical Yaskawa Electric Manufacturing Co Ltd
Priority to JP16366780A priority Critical patent/JPS5786761A/en
Publication of JPS5786761A publication Critical patent/JPS5786761A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

PURPOSE:To conduct detection of speed in a low range with high sensitivity and low noises by inputting sine waves to a resolver, the phases of which are mutually off by 90 deg. and obtaining and differentiating the phase information according to the rotational angle. CONSTITUTION:Sine waves (angular frequency: omega) with phase difference of 90 deg. between them are supplied respectively to the exciting coils Walpha and Wbeta of a resolver 1. The output of a detection coil WD becomes a sine wave but its signal phase corresponds to the rotational angle thetae of the detection coil. This detection signal and one of exciting signals are multiplied by a multiplier 3 to obtain a signal that contains two frequency components omega and dthetae/dt. If this signal is freed of high frequency component omega through a low pass filter 4, it becomes a signal that is proportional to costhetae. If it is differentiated, its amplitude is proportional to dthetae/dt, that is, it represents angular speed. When the signal is passed through an absolute value circuit 6 and a smoothing circuit 7, direct current voltage can be obtained that is proportional to the speed.
JP16366780A 1980-11-20 1980-11-20 Low speed detection circuit Pending JPS5786761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16366780A JPS5786761A (en) 1980-11-20 1980-11-20 Low speed detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16366780A JPS5786761A (en) 1980-11-20 1980-11-20 Low speed detection circuit

Publications (1)

Publication Number Publication Date
JPS5786761A true JPS5786761A (en) 1982-05-29

Family

ID=15778293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16366780A Pending JPS5786761A (en) 1980-11-20 1980-11-20 Low speed detection circuit

Country Status (1)

Country Link
JP (1) JPS5786761A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111400A (en) * 1982-12-16 1984-06-27 松下電器産業株式会社 Device for mounting electronic part
CN107192843A (en) * 2017-06-28 2017-09-22 北京航天控制仪器研究所 A kind of low speed speed precision detection method of high precision turntable
JP2021148447A (en) * 2020-03-16 2021-09-27 株式会社東海理化電機製作所 Position detection device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111400A (en) * 1982-12-16 1984-06-27 松下電器産業株式会社 Device for mounting electronic part
CN107192843A (en) * 2017-06-28 2017-09-22 北京航天控制仪器研究所 A kind of low speed speed precision detection method of high precision turntable
CN107192843B (en) * 2017-06-28 2019-05-24 北京航天控制仪器研究所 A kind of low speed speed precision detection method of high precision turntable
JP2021148447A (en) * 2020-03-16 2021-09-27 株式会社東海理化電機製作所 Position detection device

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