JPS57197601A - High reliability set value control system - Google Patents

High reliability set value control system

Info

Publication number
JPS57197601A
JPS57197601A JP8104481A JP8104481A JPS57197601A JP S57197601 A JPS57197601 A JP S57197601A JP 8104481 A JP8104481 A JP 8104481A JP 8104481 A JP8104481 A JP 8104481A JP S57197601 A JPS57197601 A JP S57197601A
Authority
JP
Japan
Prior art keywords
value
standard
controlled variable
target value
computer
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.)
Pending
Application number
JP8104481A
Other languages
Japanese (ja)
Inventor
Shiyouichi Masui
Motohisa Funabashi
Mikihiko Onari
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8104481A priority Critical patent/JPS57197601A/en
Publication of JPS57197601A publication Critical patent/JPS57197601A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Emergency Alarm Devices (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To elevate reliability of a system, by setting a standard controlled variable to a low rank controller, when a target value of the controlled variable to the low rank controller has been lost, in case of stop by an accident of a high rank computer of a supervisory computer control system. CONSTITUTION:A high rank computer 1 calculates a target value of a controlled variable in accordance with a control logic based on a measured value 101 from an object 4 to be controlled. Subsequently, a value 701 which has subtracted a standard value 801 set in a register 8, from this target value is outputted to an adder 7, takes the sum with the standard value 801, by which a signal 201 is generated, and it is set to a target value of a controlled variable to a set value controller 11 being a low rank controller. As for the standard value 801, a value whose safety has been taken into consideration sufficiently, or a value which can be changed in accordance with a state by being calculated in order is set in advance, and after the signal 701 has been lost due to an accident of the computer 1, this standard value 801 is set to the target value, and the operation is executed continuously.
JP8104481A 1981-05-29 1981-05-29 High reliability set value control system Pending JPS57197601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8104481A JPS57197601A (en) 1981-05-29 1981-05-29 High reliability set value control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8104481A JPS57197601A (en) 1981-05-29 1981-05-29 High reliability set value control system

Publications (1)

Publication Number Publication Date
JPS57197601A true JPS57197601A (en) 1982-12-03

Family

ID=13735429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8104481A Pending JPS57197601A (en) 1981-05-29 1981-05-29 High reliability set value control system

Country Status (1)

Country Link
JP (1) JPS57197601A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60164802A (en) * 1984-02-07 1985-08-27 Nittan Co Ltd Monitor and control equipment for prevention of disaster
JPS62271099A (en) * 1987-01-14 1987-11-25 ニツタン株式会社 Monitor controller for disaster prevention

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60164802A (en) * 1984-02-07 1985-08-27 Nittan Co Ltd Monitor and control equipment for prevention of disaster
JPS62271099A (en) * 1987-01-14 1987-11-25 ニツタン株式会社 Monitor controller for disaster prevention

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