ES478885A1 - Circuito de supervision para sistema de control de dos cana-les redundantes. - Google Patents

Circuito de supervision para sistema de control de dos cana-les redundantes.

Info

Publication number
ES478885A1
ES478885A1 ES478885A ES478885A ES478885A1 ES 478885 A1 ES478885 A1 ES 478885A1 ES 478885 A ES478885 A ES 478885A ES 478885 A ES478885 A ES 478885A ES 478885 A1 ES478885 A1 ES 478885A1
Authority
ES
Spain
Prior art keywords
channel
circuit
output
determines
supervisory circuit
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
ES478885A
Other languages
English (en)
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of ES478885A1 publication Critical patent/ES478885A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Safety Devices In Control Systems (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

La invención consiste en proporcionar un circuito de supervision de sistema de control de canales redundantes que funciona basándose en el supuesto de que la mayoría de los fallos del circuito de control son catastróficos. Un fallo catastrófico está indicado poru n cambio importante de la salida durante un periodo de tiempo relativamente corto. El circuito de supervisión incluye un circuito de selección de canales que recibe las entradas procedentes de ambos canales idénticos del sistema de control y determina el canal defectuoso. La selección se efectúa mediante la comparación en dos etapas. En la primera etapa se comparan las salidas de ambos canales con una salida previamente almacenada, o un promedio de salidas previas. En esta primera comparación, la salida almacenada se sustrae de cada salida de canal para proporcionar unas primeras y segunda salidas iguales a las diferencias entre las salidas de los canales y la salida almacenada. En la segunda comparación, los valores absolutos de las salidas de la primera comparación se sustraen. La polaridad de la salida de la segunda comparación indica el canal defectuoso.
ES478885A 1978-03-24 1979-03-22 Circuito de supervision para sistema de control de dos cana-les redundantes. Expired ES478885A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/889,625 US4199799A (en) 1978-03-24 1978-03-24 Supervisory circuit for redundant channel control systems

Publications (1)

Publication Number Publication Date
ES478885A1 true ES478885A1 (es) 1979-11-16

Family

ID=25395460

Family Applications (1)

Application Number Title Priority Date Filing Date
ES478885A Expired ES478885A1 (es) 1978-03-24 1979-03-22 Circuito de supervision para sistema de control de dos cana-les redundantes.

Country Status (6)

Country Link
US (1) US4199799A (es)
JP (1) JPS54138971A (es)
DE (1) DE2911240A1 (es)
ES (1) ES478885A1 (es)
IT (1) IT1111264B (es)
SE (1) SE438563B (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430633A1 (fr) * 1978-07-07 1980-02-01 Sfena Systeme de commande auto-surveille, d'un processus
WO1982001289A1 (en) * 1980-09-29 1982-04-15 Steinlin W Generator circuit of a regulation voltage function of a differential frequency or phase and utilization of such circuit
US4394761A (en) * 1981-04-16 1983-07-19 Honeywell Inc. Current switching technique
US4475049A (en) * 1981-05-07 1984-10-02 Smith Robert E Redundant serial communication circuit
US4577332A (en) * 1983-03-14 1986-03-18 General Electric Company Digital decoding arrangement
US4797670A (en) * 1987-01-30 1989-01-10 Joyner Engineers & Trainers, Inc. Redundant signal selector system
US4829198A (en) * 1987-04-10 1989-05-09 International Business Machines Corporation Fault tolerant logical circuitry
JPS63318816A (ja) * 1987-06-12 1988-12-27 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン 欠陥許容性を有する論理回路
DE8904581U1 (de) * 1989-04-12 1989-05-24 EUBA-Antriebstechnik Eller GmbH, 4300 Essen Motorüberwachungsschalter
JP2514675Y2 (ja) * 1990-05-31 1996-10-23 株式会社島津製作所 プロセス制御装置
DE19610871C1 (de) * 1996-03-20 1997-06-19 Daimler Benz Ag Steuerungsvorrichtung, insbesondere zur Fahrzeugbremslichtsteuerung
US5949677A (en) * 1997-01-09 1999-09-07 Honeywell Inc. Control system utilizing fault detection
DE19727204A1 (de) * 1997-06-26 1999-01-07 Bosch Gmbh Robert Vorrichtung zur Erkennung eines fehlerhaften Signales
DE10035174A1 (de) * 2000-05-18 2001-12-06 Siemens Ag Peripheriebaustein mit hoher Fehlersicherheit für speicherprogrammierbare Steuerungen
US6603301B2 (en) * 2001-07-26 2003-08-05 Agilent Technologies, Inc. Multiple range current measurement system with low power dissipation, fast setting time, and low common mode voltage error

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800164A (en) * 1969-01-02 1974-03-26 Us Navy Redundant logic circuit
DE2020940B2 (de) * 1970-04-29 1973-05-03 Siemens AG, 1000 Berlin u. 8000 München Einrichtung zur funktionsueberwachung der einzelnen regelstraenge eines analogen mehrkanaligen regelsystems
JPS511264B2 (es) * 1972-05-02 1976-01-16
US3979720A (en) * 1974-05-22 1976-09-07 Siemens Aktiengesellschaft Apparatus for monitoring a redundant multi-channel analog system
US4105900A (en) * 1977-02-16 1978-08-08 The Boeing Company Signal selection apparatus for redundant signal sources

Also Published As

Publication number Publication date
JPH0248921B2 (es) 1990-10-26
IT7921147A0 (it) 1979-03-20
SE7902587L (sv) 1979-09-25
IT1111264B (it) 1986-01-13
DE2911240A1 (de) 1979-10-04
SE438563B (sv) 1985-04-22
JPS54138971A (en) 1979-10-27
US4199799A (en) 1980-04-22

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