GB1519953A - Linear induction actuators - Google Patents

Linear induction actuators

Info

Publication number
GB1519953A
GB1519953A GB2837674A GB2837674A GB1519953A GB 1519953 A GB1519953 A GB 1519953A GB 2837674 A GB2837674 A GB 2837674A GB 2837674 A GB2837674 A GB 2837674A GB 1519953 A GB1519953 A GB 1519953A
Authority
GB
United Kingdom
Prior art keywords
tube
velocity
fixed
coils
june
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
GB2837674A
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB2837674A priority Critical patent/GB1519953A/en
Publication of GB1519953A publication Critical patent/GB1519953A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/025—Asynchronous motors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1519953 Measuring displacement and velocity electrically NATIONAL RESEARCH DEVELOPMENT CORP 26 June 1975 [26 June 1974] 28376/74 Heading GIN [Also in Divisions G3 and H2] A linear induction actuator incorporates a capacitive position transducer for indicating the position of a movable conductor relative to a fixed winding and fixed magnetic member. In the arrangement shown, an aluminium tube 26 is mounted on a shaft 28 between a fixed iron tube 21 and a set of coils 22 mounted on a fixed stainless steel tube 24, and energization of the coils 22 causes the tube 26 and shaft 28 to move axially to adjust a valve-member (not illustrated). For sensing the position of the tube 26, electrical contact is made with the tube 24 and with two independent sections 32, 33 of the tube 21 so that a pair of capacitors C 1 , C2 are effectively formed by the tube 24 and the respective sections 32, 33, the capacities of C 1 and C 2 varying with the axial position of the tube 26. A bridge circuit in a servosystem, Fig. 6, is used to compare C 1 and C2, and the output from a detection system 44, 43, 49, 62 provides a signal representing the position of the tube 26. A signal representing the velocity of the tube 26 is taken from a resistor 59, as described in Specification 1519954 (Division G1). The position and velocity signals are used to provide retro-active control of the actuator (Division G3).
GB2837674A 1974-06-26 1974-06-26 Linear induction actuators Expired GB1519953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2837674A GB1519953A (en) 1974-06-26 1974-06-26 Linear induction actuators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2837674A GB1519953A (en) 1974-06-26 1974-06-26 Linear induction actuators

Publications (1)

Publication Number Publication Date
GB1519953A true GB1519953A (en) 1978-08-02

Family

ID=10274682

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2837674A Expired GB1519953A (en) 1974-06-26 1974-06-26 Linear induction actuators

Country Status (1)

Country Link
GB (1) GB1519953A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526605A1 (en) * 1982-05-10 1983-11-10 Kollmorgen Tech Corp ELECTRICAL ACTUATOR WITH CAPACITIVE CONTROL
US5544786A (en) * 1989-10-17 1996-08-13 Technichem Pty. Ltd. Volume and flow measuring apparatus
EP1834093A1 (en) * 2004-12-13 2007-09-19 Sullair Corporation Reciprocating pump system
CN106787420A (en) * 2017-01-19 2017-05-31 山东十方机电有限公司 A kind of electronic limit tube shaped electric machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526605A1 (en) * 1982-05-10 1983-11-10 Kollmorgen Tech Corp ELECTRICAL ACTUATOR WITH CAPACITIVE CONTROL
GB2121242A (en) * 1982-05-10 1983-12-14 Kollmorgen Tech Corp Electric motor with a capacitive position sensor
US5544786A (en) * 1989-10-17 1996-08-13 Technichem Pty. Ltd. Volume and flow measuring apparatus
EP1834093A1 (en) * 2004-12-13 2007-09-19 Sullair Corporation Reciprocating pump system
CN106787420A (en) * 2017-01-19 2017-05-31 山东十方机电有限公司 A kind of electronic limit tube shaped electric machine
CN106787420B (en) * 2017-01-19 2024-01-16 山东沃盟智能科技有限公司 Electronic limit tubular motor

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Legal Events

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