IT1109000B - Tachimetro elettronico con differenziatore a larghezza di banda variabile - Google Patents

Tachimetro elettronico con differenziatore a larghezza di banda variabile

Info

Publication number
IT1109000B
IT1109000B IT24498/78A IT2449878A IT1109000B IT 1109000 B IT1109000 B IT 1109000B IT 24498/78 A IT24498/78 A IT 24498/78A IT 2449878 A IT2449878 A IT 2449878A IT 1109000 B IT1109000 B IT 1109000B
Authority
IT
Italy
Prior art keywords
differentiator
variable bandwidth
electronic speedometer
speedometer
electronic
Prior art date
Application number
IT24498/78A
Other languages
English (en)
Other versions
IT7824498A0 (it
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of IT7824498A0 publication Critical patent/IT7824498A0/it
Application granted granted Critical
Publication of IT1109000B publication Critical patent/IT1109000B/it

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/24—Arrangements for providing constant relative speed between record carrier and head
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Control Of Position Or Direction (AREA)
  • Networks Using Active Elements (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Linear Motors (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Feedback Control In General (AREA)
IT24498/78A 1977-06-29 1978-06-13 Tachimetro elettronico con differenziatore a larghezza di banda variabile IT1109000B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/811,349 US4138728A (en) 1977-06-29 1977-06-29 Electronic tachometer with variable bandwidth differentiator

Publications (2)

Publication Number Publication Date
IT7824498A0 IT7824498A0 (it) 1978-06-13
IT1109000B true IT1109000B (it) 1985-12-16

Family

ID=25206313

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24498/78A IT1109000B (it) 1977-06-29 1978-06-13 Tachimetro elettronico con differenziatore a larghezza di banda variabile

Country Status (10)

Country Link
US (1) US4138728A (it)
JP (1) JPS598780B2 (it)
BR (1) BR7804157A (it)
CA (1) CA1079538A (it)
CH (1) CH627868A5 (it)
DE (1) DE2827420C2 (it)
ES (1) ES470932A1 (it)
FR (1) FR2396301A1 (it)
GB (1) GB1572980A (it)
IT (1) IT1109000B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246536A (en) * 1978-09-29 1981-01-20 International Business Machines Corporation Electronic velocity measurement device
JPS5862869A (ja) * 1981-10-09 1983-04-14 Takagi Kogyo Kk 磁気デイスク装置用磁気ヘツド位置決め装置
JPS6054237A (ja) * 1983-09-01 1985-03-28 Toyo Seikan Kaisha Ltd 巻締機械
JPS60170543A (ja) * 1984-02-15 1985-09-04 Toyo Seikan Kaisha Ltd 巻締装置
DE3543058C2 (de) * 1985-12-05 1997-02-13 Teves Gmbh Alfred Verfahren und Schaltungsanordnung zur Aufbereitung eines Sensorsignals
US5004979A (en) * 1987-11-03 1991-04-02 Bear Automotive Service Equipment Company Battery tach
US6262549B1 (en) * 2000-06-29 2001-07-17 System General Corp. Fan speed pulse filter for a PWM fan

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159741A (en) * 1959-03-27 1964-12-01 Honeywell Inc Low noise electronic differentiator
US3216676A (en) * 1963-05-20 1965-11-09 Sperry Rand Corp Self-adaptive control system
US3273035A (en) * 1963-11-27 1966-09-13 Avco Corp System of stabilization for a sampledata servo using a variable gain sampled-data loop and a proportional loop
US3568059A (en) * 1969-01-21 1971-03-02 Information Storage Systems Electronic tachometer
US3593333A (en) * 1969-11-26 1971-07-13 Ibm Position detection for a track following servo system
JPS5027390B1 (it) * 1970-05-12 1975-09-06
SU442485A1 (ru) * 1972-12-18 1974-09-05 Предприятие П/Я А-7284 Дифференцирующее устройство
US3820712A (en) * 1973-03-12 1974-06-28 Ibm Electronic tachometer
US3883894A (en) * 1973-10-19 1975-05-13 Storage Disk Corp Disk drive servo system
FR2221735A1 (en) * 1974-02-13 1974-10-11 Ibm Electronic tachometer - has angular speed signal derived from position and acceleration signals and with low-pass filter
US3994016A (en) * 1975-03-31 1976-11-23 Honeywell Information Systems, Inc. Head positioning servo system for disk drives

Also Published As

Publication number Publication date
ES470932A1 (es) 1979-02-01
IT7824498A0 (it) 1978-06-13
CA1079538A (en) 1980-06-17
FR2396301A1 (fr) 1979-01-26
JPS598780B2 (ja) 1984-02-27
US4138728A (en) 1979-02-06
JPS5412873A (en) 1979-01-30
BR7804157A (pt) 1979-04-10
DE2827420C2 (de) 1985-04-18
DE2827420A1 (de) 1979-01-11
CH627868A5 (de) 1982-01-29
GB1572980A (en) 1980-08-13
FR2396301B1 (it) 1983-01-28

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