GB1518571A - Speed and acceleration measurement - Google Patents

Speed and acceleration measurement

Info

Publication number
GB1518571A
GB1518571A GB1537176A GB1537176A GB1518571A GB 1518571 A GB1518571 A GB 1518571A GB 1537176 A GB1537176 A GB 1537176A GB 1537176 A GB1537176 A GB 1537176A GB 1518571 A GB1518571 A GB 1518571A
Authority
GB
United Kingdom
Prior art keywords
acceleration
speed
error
input parameter
parameter
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
GB1537176A
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.)
Reyrolle Parsons Ltd
Original Assignee
Reyrolle Parsons Ltd
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 Reyrolle Parsons Ltd filed Critical Reyrolle Parsons Ltd
Priority to GB1537176A priority Critical patent/GB1518571A/en
Publication of GB1518571A publication Critical patent/GB1518571A/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
    • G01P7/00—Measuring speed by integrating acceleration
    • 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
    • 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

Abstract

1518571 Measuring speed and acceleration REYROLLE PARSONS Ltd 5 April 1977 [14 April 1976] 15371/76 Heading G1N The invention relates to a method of an appar- atus for determining linear or rotational speed and/or acceleration of a moving body relative to a fixed reference body. The method comprises the steps of providing on one of the bodies a system of equally spaced marks, e.g. a toothed wheel, in the direction of relative motion, converting the time intervals between the passage of successive marks past a reference point on the other body into signals indicative of speed and acceleration of the moving body, and using a comparison system in which an input parameter to an integration arranged within the system is iteratively integrated for successive periods related to the time intervals. The output parameter from the integration arrangement at the end of each period is controlled to approach a desired reference value by feeding to the input of the integration arrangement an incrementally corrected input parameter, the incremental correction in which is derived as a proportion of the error between the desired and obtaining output parameters following an iteration. Thus the input parameter becomes representative of the required speed of the moving body after one or more successive iterations and acceleration of the body may be determined on terms of the error in output parameter. The aforesaid proportion of the error is derived in terms of the quotient of the input parameter representative of the standing value of measured speed divided by the desired value of the output parameter. The acceleration is derived from the product of the error in the output parameter following an iteration and the square of the input parameter representative of the steady value of the measured speed for that iteration.
GB1537176A 1977-04-05 1977-04-05 Speed and acceleration measurement Expired GB1518571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1537176A GB1518571A (en) 1977-04-05 1977-04-05 Speed and acceleration measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1537176A GB1518571A (en) 1977-04-05 1977-04-05 Speed and acceleration measurement

Publications (1)

Publication Number Publication Date
GB1518571A true GB1518571A (en) 1978-07-19

Family

ID=10057997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1537176A Expired GB1518571A (en) 1977-04-05 1977-04-05 Speed and acceleration measurement

Country Status (1)

Country Link
GB (1) GB1518571A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094778A1 (en) * 1982-05-19 1983-11-23 WESTLAND plc On board helicopter airspeed indicating apparatus
WO2009087503A1 (en) * 2008-01-04 2009-07-16 Nxp B.V. Sensor device
WO2009087504A1 (en) * 2008-01-04 2009-07-16 Nxp B.V. Sensor device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094778A1 (en) * 1982-05-19 1983-11-23 WESTLAND plc On board helicopter airspeed indicating apparatus
WO2009087503A1 (en) * 2008-01-04 2009-07-16 Nxp B.V. Sensor device
WO2009087504A1 (en) * 2008-01-04 2009-07-16 Nxp B.V. Sensor device

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee