CA955315A - Digital phase correcting servo for controlling the phase of an analog drive signal - Google Patents

Digital phase correcting servo for controlling the phase of an analog drive signal

Info

Publication number
CA955315A
CA955315A CA125,515A CA125515A CA955315A CA 955315 A CA955315 A CA 955315A CA 125515 A CA125515 A CA 125515A CA 955315 A CA955315 A CA 955315A
Authority
CA
Canada
Prior art keywords
phase
controlling
drive signal
analog drive
correcting servo
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.)
Expired
Application number
CA125,515A
Other languages
English (en)
Other versions
CA125515S (en
Inventor
John T. Bobbitt
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.)
PETTY-RAY GEOPHYSICAL
Original Assignee
PETTY-RAY GEOPHYSICAL
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 PETTY-RAY GEOPHYSICAL filed Critical PETTY-RAY GEOPHYSICAL
Application granted granted Critical
Publication of CA955315A publication Critical patent/CA955315A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/08—Networks for phase shifting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/02—Generating seismic energy
    • G01V1/04—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Velocity Or Acceleration (AREA)
CA125,515A 1970-11-06 1971-10-19 Digital phase correcting servo for controlling the phase of an analog drive signal Expired CA955315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8739070A 1970-11-06 1970-11-06

Publications (1)

Publication Number Publication Date
CA955315A true CA955315A (en) 1974-09-24

Family

ID=22204904

Family Applications (1)

Application Number Title Priority Date Filing Date
CA125,515A Expired CA955315A (en) 1970-11-06 1971-10-19 Digital phase correcting servo for controlling the phase of an analog drive signal

Country Status (7)

Country Link
US (1) US3626267A (enExample)
AU (1) AU454098B2 (enExample)
BR (1) BR7107401D0 (enExample)
CA (1) CA955315A (enExample)
DE (1) DE2155128C3 (enExample)
FR (1) FR2112496B1 (enExample)
GB (1) GB1325148A (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917987A (en) * 1973-12-28 1975-11-04 Fujitsu Ltd Voice coil motor control system
US4068210A (en) * 1976-04-07 1978-01-10 Standard Oil Company (Indiana) Seismic vibrator phase detector
US4300083A (en) * 1977-07-05 1981-11-10 Automation Devices, Inc. Constant amplitude controller and method
US4637307A (en) * 1983-09-13 1987-01-20 Genicom Corporation Automatic mechanical resonant frequency detector and driver for shuttle printer mechanism
GB8417241D0 (en) * 1984-07-06 1984-08-08 Unilever Plc Transducers and control means
US5212434A (en) * 1992-03-17 1993-05-18 National Science Counsil Phase-locked step motor speed servo controller
WO2015041850A1 (en) * 2013-09-19 2015-03-26 Conocophillips Company Method for synchronizing continuous seismic survey

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439336A (en) * 1965-09-29 1969-04-15 Vyzk Ustav Matemat Stroju Digital comparator
US3548282A (en) * 1969-01-27 1970-12-15 Security Trust Co Of Rochester Control system for motor velocity and position
US3564379A (en) * 1969-07-02 1971-02-16 Gen Electric Automatic position inspector

Also Published As

Publication number Publication date
AU454098B2 (en) 1974-10-17
FR2112496A1 (enExample) 1972-06-16
BR7107401D0 (pt) 1973-04-10
DE2155128C3 (de) 1974-02-28
AU3485871A (en) 1973-05-03
FR2112496B1 (enExample) 1978-01-06
DE2155128A1 (de) 1972-05-25
GB1325148A (en) 1973-08-01
US3626267A (en) 1971-12-07
DE2155128B2 (de) 1973-08-02

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