GB2142149B - Monitoring apparatus using phase locked loop - Google Patents

Monitoring apparatus using phase locked loop

Info

Publication number
GB2142149B
GB2142149B GB08415389A GB8415389A GB2142149B GB 2142149 B GB2142149 B GB 2142149B GB 08415389 A GB08415389 A GB 08415389A GB 8415389 A GB8415389 A GB 8415389A GB 2142149 B GB2142149 B GB 2142149B
Authority
GB
United Kingdom
Prior art keywords
locked loop
monitoring apparatus
phase locked
phase
monitoring
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
GB08415389A
Other versions
GB2142149A (en
GB8415389D0 (en
Inventor
Christopher John Sherwood
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.)
Rolls Royce Power Engineering PLC
Original Assignee
Northern Engineering Industries PLC
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
Priority claimed from GB838317317A external-priority patent/GB8317317D0/en
Application filed by Northern Engineering Industries PLC filed Critical Northern Engineering Industries PLC
Priority to GB08415389A priority Critical patent/GB2142149B/en
Publication of GB8415389D0 publication Critical patent/GB8415389D0/en
Publication of GB2142149A publication Critical patent/GB2142149A/en
Application granted granted Critical
Publication of GB2142149B publication Critical patent/GB2142149B/en
Expired 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
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Conveyors (AREA)
GB08415389A 1983-06-25 1984-06-15 Monitoring apparatus using phase locked loop Expired GB2142149B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08415389A GB2142149B (en) 1983-06-25 1984-06-15 Monitoring apparatus using phase locked loop

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838317317A GB8317317D0 (en) 1983-06-25 1983-06-25 Monitor apparatus
GB08415389A GB2142149B (en) 1983-06-25 1984-06-15 Monitoring apparatus using phase locked loop

Publications (3)

Publication Number Publication Date
GB8415389D0 GB8415389D0 (en) 1984-07-18
GB2142149A GB2142149A (en) 1985-01-09
GB2142149B true GB2142149B (en) 1987-09-09

Family

ID=26286476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08415389A Expired GB2142149B (en) 1983-06-25 1984-06-15 Monitoring apparatus using phase locked loop

Country Status (1)

Country Link
GB (1) GB2142149B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19915877B4 (en) * 1999-04-08 2008-11-13 Hkr Climatec Gmbh Method and device for controlling the speed of a DC commutator motor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1094153A (en) * 1963-07-04 1967-12-06 Nat Res Dev Improvements in and relating to precision speed control for cyclically moving bodies
GB1162061A (en) * 1967-01-05 1969-08-20 Gen Electric & English Elect Improvements in or relating to Apparatus for Measuring Frequency
DE1806765C3 (en) * 1968-11-02 1973-10-11 Siemens Ag, 1000 Berlin U. 8000 Muenchen Arrangement for the formation of output pulses with adjustable frequency

Also Published As

Publication number Publication date
GB2142149A (en) 1985-01-09
GB8415389D0 (en) 1984-07-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee