GB837914A - Electric motor control system - Google Patents

Electric motor control system

Info

Publication number
GB837914A
GB837914A GB26733/56A GB2673356A GB837914A GB 837914 A GB837914 A GB 837914A GB 26733/56 A GB26733/56 A GB 26733/56A GB 2673356 A GB2673356 A GB 2673356A GB 837914 A GB837914 A GB 837914A
Authority
GB
United Kingdom
Prior art keywords
winding
motor
feed
current
control
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
GB26733/56A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB837914A publication Critical patent/GB837914A/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
    • G05D3/1418—Control of position or direction using feedback using an analogue comparing device with ac amplifier chain

Abstract

837,914. Control of A.C. motors. STANDARD TELEPHONES & CABLES Ltd. Aug. 31, 1956 [Sept. 7, 1955], No. 26733/56. Class 38 (3). An induction motor having a control winding 29 and a reference winding 34 is controlled by means of D.C. signals derived from a source 1 which is connected through the secondary winding of a feed-back transformer 4 to the grid of a triode 6. This valve is arranged in an A.C. bridge circuit also comprising resistors 11, 14 and 15, the bridge being supplied from source 18 and having its output terminals connected to transformer winding 9. Thus, the phase and amplitude of the current in winding 9 are dependent upon the impedance of the triode 6, and this current is amplified in a push-pull amplifier and fed to the control winding of the motor. In order to prevent hunting, the motor drives an induction generator 37 with its rotor winding connected to the primary winding of the feed-back transformer 4, this feed-back voltage being effective to oppose the flow of current through the winding 9. The motor may be mechanically coupled to a reversible counter 33 for use in an aeroplane navigation system.
GB26733/56A 1955-09-07 1956-08-31 Electric motor control system Expired GB837914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US837914XA 1955-09-07 1955-09-07

Publications (1)

Publication Number Publication Date
GB837914A true GB837914A (en) 1960-06-15

Family

ID=22180725

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26733/56A Expired GB837914A (en) 1955-09-07 1956-08-31 Electric motor control system

Country Status (1)

Country Link
GB (1) GB837914A (en)

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