CA961579A - Algebraic summing digital-to-analog converter - Google Patents

Algebraic summing digital-to-analog converter

Info

Publication number
CA961579A
CA961579A CA150,691A CA150691A CA961579A CA 961579 A CA961579 A CA 961579A CA 150691 A CA150691 A CA 150691A CA 961579 A CA961579 A CA 961579A
Authority
CA
Canada
Prior art keywords
analog converter
algebraic summing
summing digital
digital
algebraic
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
CA150,691A
Other versions
CA150691S (en
Inventor
Joseph R. Ahlgren
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.)
Woodward Inc
Original Assignee
Woodward Governor Co
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 Woodward Governor Co filed Critical Woodward Governor Co
Application granted granted Critical
Publication of CA961579A publication Critical patent/CA961579A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/002—Electric control of rotation speed controlling air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
    • F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
    • F01D17/24—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical electrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/90—Specific system operational feature
    • Y10S388/906—Proportional-integral system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/912—Pulse or frequency counter

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Eletrric Generators (AREA)
CA150,691A 1971-09-02 1972-08-31 Algebraic summing digital-to-analog converter Expired CA961579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00177285A US3802188A (en) 1971-09-02 1971-09-02 Digital governor

Publications (1)

Publication Number Publication Date
CA961579A true CA961579A (en) 1975-01-21

Family

ID=22647992

Family Applications (3)

Application Number Title Priority Date Filing Date
CA150,691A Expired CA961579A (en) 1971-09-02 1972-08-31 Algebraic summing digital-to-analog converter
CA150,693A Expired CA969256A (en) 1971-09-02 1972-08-31 Digital governor
CA150,692A Expired CA969255A (en) 1971-09-02 1972-08-31 Digital governor

Family Applications After (2)

Application Number Title Priority Date Filing Date
CA150,693A Expired CA969256A (en) 1971-09-02 1972-08-31 Digital governor
CA150,692A Expired CA969255A (en) 1971-09-02 1972-08-31 Digital governor

Country Status (2)

Country Link
US (1) US3802188A (en)
CA (3) CA961579A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5553589A (en) * 1995-06-07 1996-09-10 Cummins Electronics Company, Inc. Variable droop engine speed control system
JP2001128474A (en) * 1999-10-26 2001-05-11 Nec Niigata Ltd Belt-drive control circuit and electro photographic device
JP4577168B2 (en) * 2005-09-13 2010-11-10 三菱電機株式会社 Control device for motor output

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097490A (en) * 1963-07-16 Callan
GB932552A (en) * 1958-09-16 1963-07-31 Brown John Constr Improvements in or relating to apparatus for controlling flow of material
US3097488A (en) * 1961-11-03 1963-07-16 Gen Electric Turbine control system
US3552872A (en) * 1969-04-14 1971-01-05 Westinghouse Electric Corp Computer positioning control system with manual backup control especially adapted for operating steam turbine valves
US3572959A (en) * 1969-05-01 1971-03-30 American Standard Inc Coupling controller

Also Published As

Publication number Publication date
CA969255A (en) 1975-06-10
US3802188A (en) 1974-04-09
CA969256A (en) 1975-06-10

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