FR2362400A1 - Shaft speed and speed variation measurement and control - by electronic circuit comparing processed data with threshold values - Google Patents

Shaft speed and speed variation measurement and control - by electronic circuit comparing processed data with threshold values

Info

Publication number
FR2362400A1
FR2362400A1 FR7605291A FR7605291A FR2362400A1 FR 2362400 A1 FR2362400 A1 FR 2362400A1 FR 7605291 A FR7605291 A FR 7605291A FR 7605291 A FR7605291 A FR 7605291A FR 2362400 A1 FR2362400 A1 FR 2362400A1
Authority
FR
France
Prior art keywords
speed
shaft
counters
control
electronic circuit
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.)
Withdrawn
Application number
FR7605291A
Other languages
French (fr)
Inventor
Robert Gadrault
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7605291A priority Critical patent/FR2362400A1/en
Publication of FR2362400A1 publication Critical patent/FR2362400A1/en
Withdrawn legal-status Critical Current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
    • G01P1/00—Details of instruments
    • G01P1/07—Indicating devices, e.g. for remote indication
    • G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
    • G01P1/10—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds
    • G01P1/103—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds by comparing the value of the measured signal with one or several reference values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/16—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal
    • G01P15/165—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal for measuring angular accelerations
    • 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
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/489—Digital circuits therefor

Abstract

A unit for measuring and controlling the speed and the variations in speed of a shaft, is esp. applicable to plant such as a cooling water pump in a nuclear installation. It includes a detector responding to the passage in front of it of a spur fixed to the shaft, by putting out an impulse, a timer generating impulses also and counter for the impulses. The counters are connected to the timer for the durations of a complete revolution of the shaft; the detector emitting an impulse for the opening of the counters on the first passage of the spur and a closing impulse on the second passage of the spur in front of it. The number of impulses recorded in the counters is thus proportional to the time required by the shaft to make a complete revolution. Circuits are connected to the counters, which, starting from the time of revolution, measure the speed of the shaft and any variation in the speed and control of these.
FR7605291A 1976-02-25 1976-02-25 Shaft speed and speed variation measurement and control - by electronic circuit comparing processed data with threshold values Withdrawn FR2362400A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7605291A FR2362400A1 (en) 1976-02-25 1976-02-25 Shaft speed and speed variation measurement and control - by electronic circuit comparing processed data with threshold values

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7605291A FR2362400A1 (en) 1976-02-25 1976-02-25 Shaft speed and speed variation measurement and control - by electronic circuit comparing processed data with threshold values

Publications (1)

Publication Number Publication Date
FR2362400A1 true FR2362400A1 (en) 1978-03-17

Family

ID=9169604

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7605291A Withdrawn FR2362400A1 (en) 1976-02-25 1976-02-25 Shaft speed and speed variation measurement and control - by electronic circuit comparing processed data with threshold values

Country Status (1)

Country Link
FR (1) FR2362400A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078327A1 (en) * 1981-05-14 1983-05-11 Fanuc Ltd. A spindle rotating speed checking method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078327A1 (en) * 1981-05-14 1983-05-11 Fanuc Ltd. A spindle rotating speed checking method
EP0078327A4 (en) * 1981-05-14 1986-02-10 Fanuc Ltd A spindle rotating speed checking method.

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Legal Events

Date Code Title Description
ST Notification of lapse