GB953473A - Improvements in control systems - Google Patents

Improvements in control systems

Info

Publication number
GB953473A
GB953473A GB44120/60A GB4412060A GB953473A GB 953473 A GB953473 A GB 953473A GB 44120/60 A GB44120/60 A GB 44120/60A GB 4412060 A GB4412060 A GB 4412060A GB 953473 A GB953473 A GB 953473A
Authority
GB
United Kingdom
Prior art keywords
channel
contacts
channels
output
relay
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
GB44120/60A
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.)
Vickers Armstrongs Aircraft Ltd
Original Assignee
Vickers Armstrongs Aircraft 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 Vickers Armstrongs Aircraft Ltd filed Critical Vickers Armstrongs Aircraft Ltd
Priority to GB44120/60A priority Critical patent/GB953473A/en
Publication of GB953473A publication Critical patent/GB953473A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D45/00Aircraft indicators or protectors not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

953,473. Protective arrangements. VICKERSARMSTRONGS (AIRCRAFT) Ltd., and D. I. ROBERTSON. Nov. 30, 1961 [Dec. 22, 1960], No. 44120/60. Heading H2K. In a control system, e.g. a triplicated aircraft autopilot control system, having a plurality of signal transmission channels A ... C for separately transmitting control signals from a common input to a common output, fault detection apparatus comprises a plurality of signal responsive devices C AB , C BC , C CA to which are applied different combinations of the control signals taken two at a time. Each device C AB , C BC , C CA produces an output signal in response to a predetermined difference between the two control signals applied thereto. Switch means, including two sets of normally-closed contacts, associated with each channel are operative in response to the simultaneous appearance of output signals from the devices fed from that channel to render that channel inoperative. In the arrangement shown, the switch means comprise electromagnetic relays RAB/2, RBC/2, RCA/2 each having two normally-closed sets of contacts, one set in a path of each of the channels from which signals are applied to the associated signal responsive device. Thus in the event of a fault in a channel, e.g. channel A, device C AB RAB provides an output to relay which opens 2 its contacts rab1 in channel A and its contacts RCA rab2 in channel B. Similarly relay opens 2 contacts rca2 and rca1 in channels A and C respectively. Channel A is now interrupted whilst channels B and C remain operative. Should the fault be in a signal responsive device or in a relay, none of the channels are interrupted.
GB44120/60A 1960-12-22 1960-12-22 Improvements in control systems Expired GB953473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB44120/60A GB953473A (en) 1960-12-22 1960-12-22 Improvements in control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB44120/60A GB953473A (en) 1960-12-22 1960-12-22 Improvements in control systems

Publications (1)

Publication Number Publication Date
GB953473A true GB953473A (en) 1964-03-25

Family

ID=10431875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44120/60A Expired GB953473A (en) 1960-12-22 1960-12-22 Improvements in control systems

Country Status (1)

Country Link
GB (1) GB953473A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170634B (en) * 1984-12-25 1989-05-04 Honda Motor Co Ltd Light control apparatus for a vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170634B (en) * 1984-12-25 1989-05-04 Honda Motor Co Ltd Light control apparatus for a vehicle

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