GB1059029A - Improved device for indicating or measuring the motion of a member - Google Patents

Improved device for indicating or measuring the motion of a member

Info

Publication number
GB1059029A
GB1059029A GB3766663A GB3766663A GB1059029A GB 1059029 A GB1059029 A GB 1059029A GB 3766663 A GB3766663 A GB 3766663A GB 3766663 A GB3766663 A GB 3766663A GB 1059029 A GB1059029 A GB 1059029A
Authority
GB
United Kingdom
Prior art keywords
bridge
motor
measuring
phase
coils
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
GB3766663A
Inventor
Denis Arthur Drew
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 PLC
Original Assignee
Rolls Royce 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
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB3766663A priority Critical patent/GB1059029A/en
Publication of GB1059029A publication Critical patent/GB1059029A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/16—Control of position or direction using feedback using an analogue comparing device whose output amplitude can only take a number of discrete values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/225—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils
    • G01D5/2275—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils by a movable non-ferromagnetic conductive element

Abstract

1,059,029. Measuring linear displacement electrically. ROLLS-ROYCE Ltd. June 16, 1964 [Sept. 25, 1963], No. 37666/63. Heading G1N. Displacement of a member 16, Fig. 2, moves a metal rod, the middle portion 17c of which is of a different metal from its outer portions 17a, 17e, thus varying the inductances of two coils 18, 19 situated at the junctions 17b, 17d between the metal portions, and unbalancing a bridge circuit 11, the unbalance signal being amplified and rectified in an amplifier and phase sensitive detector 12, and fed via a phase-advance circuit 13 to a motor 14. The motor rotates a threaded rod 20 and thus raises a collar 21, carrying the assembly of coils 18, 19 to rebalance the bridge. The motor also operates an indicator 20a. In measuring the position of a machine tool head two additional bridge outputs from resistors (5, 6) and (7, 8), Fig. 4 (not shown), are respectively arranged to pass through zero as the bridge unbalance voltage approaches zero from a positive or a negative direction, and these outputs control a clutch (24a) which automatically disengages or partially disengages the motor (14) from the lead screw to allow the final part of the bridge rebalancing to be completed slowly and/or manually. The clutch control circuits are transistorized Schmitt trigger circuits, Fig. 5 (not shown), and each receives an input from the phase advance circuit 26 to ensure that if the tool is moving fast the approach signal is given correspondingly earlier. Backlash in the mechanical part of the system is removed by the use of two equally and oppositely exited motors Fig. 7 (not shown), the bridge unbalance signal causing an increase or decrease in the excitation of one of the motors.
GB3766663A 1963-09-25 1963-09-25 Improved device for indicating or measuring the motion of a member Expired GB1059029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3766663A GB1059029A (en) 1963-09-25 1963-09-25 Improved device for indicating or measuring the motion of a member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3766663A GB1059029A (en) 1963-09-25 1963-09-25 Improved device for indicating or measuring the motion of a member

Publications (1)

Publication Number Publication Date
GB1059029A true GB1059029A (en) 1967-02-15

Family

ID=10398112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3766663A Expired GB1059029A (en) 1963-09-25 1963-09-25 Improved device for indicating or measuring the motion of a member

Country Status (1)

Country Link
GB (1) GB1059029A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4855675A (en) * 1984-05-21 1989-08-08 Sacol Powerline Limited Inductive transducers for indicating establishment of a preselected spatial relationship between two parts
CN110546406A (en) * 2017-05-03 2019-12-06 舍弗勒技术股份两合公司 Method for operating an actuator assembly for a clutch actuation system and actuator assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4855675A (en) * 1984-05-21 1989-08-08 Sacol Powerline Limited Inductive transducers for indicating establishment of a preselected spatial relationship between two parts
CN110546406A (en) * 2017-05-03 2019-12-06 舍弗勒技术股份两合公司 Method for operating an actuator assembly for a clutch actuation system and actuator assembly

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