GB732396A - Improvements in negative feed-back systems incorporating magnetic amplifiers - Google Patents

Improvements in negative feed-back systems incorporating magnetic amplifiers

Info

Publication number
GB732396A
GB732396A GB192853A GB192853A GB732396A GB 732396 A GB732396 A GB 732396A GB 192853 A GB192853 A GB 192853A GB 192853 A GB192853 A GB 192853A GB 732396 A GB732396 A GB 732396A
Authority
GB
United Kingdom
Prior art keywords
signal
magnetic amplifier
magnetic amplifiers
systems incorporating
correction
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
GB192853A
Inventor
Frederick Roger Milsom
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.)
S Smith and Sons Ltd
S Smith and Sons England Ltd
Original Assignee
S Smith and Sons Ltd
S Smith and Sons England 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 S Smith and Sons Ltd, S Smith and Sons England Ltd filed Critical S Smith and Sons Ltd
Priority to GB192853A priority Critical patent/GB732396A/en
Publication of GB732396A publication Critical patent/GB732396A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)

Abstract

732,396. Automatic control systems. SMITH & SONS (ENGLAND), Ltd., S. Jan. 15, 1954 [Jan. 22, 1953], No. 1928/53. Drawings to Specification. Class 38 (4). [Also in Group XXXVIII] The invention relates to the correction of drift in closed loop servo systems using magnetic amplifiers. According to the invention the error signal is modulated at a frequency low compared with that of the power supply to the main magnetic amplifier (e.g. 10 c/s. with a 400 c/s. supply), and the L.F. modulated signal is fed to an auxiliary magnetic amplifier and then demodulated to produce a correction signal which is comparatively large for very low frequency components, i.e. drift. This correction signal is applied together with the error signal to the input (or inputs) of the main magnetic amplifier.
GB192853A 1953-01-22 1953-01-22 Improvements in negative feed-back systems incorporating magnetic amplifiers Expired GB732396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB192853A GB732396A (en) 1953-01-22 1953-01-22 Improvements in negative feed-back systems incorporating magnetic amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB192853A GB732396A (en) 1953-01-22 1953-01-22 Improvements in negative feed-back systems incorporating magnetic amplifiers

Publications (1)

Publication Number Publication Date
GB732396A true GB732396A (en) 1955-06-22

Family

ID=9730478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB192853A Expired GB732396A (en) 1953-01-22 1953-01-22 Improvements in negative feed-back systems incorporating magnetic amplifiers

Country Status (1)

Country Link
GB (1) GB732396A (en)

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