JPS57176406A - Process controlling method - Google Patents

Process controlling method

Info

Publication number
JPS57176406A
JPS57176406A JP6286681A JP6286681A JPS57176406A JP S57176406 A JPS57176406 A JP S57176406A JP 6286681 A JP6286681 A JP 6286681A JP 6286681 A JP6286681 A JP 6286681A JP S57176406 A JPS57176406 A JP S57176406A
Authority
JP
Japan
Prior art keywords
deviation
ter
life
extend
set point
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
JP6286681A
Other languages
Japanese (ja)
Inventor
Shinichi Nakane
Hiroshi Fujieda
Hirokuni Murakami
Makoto Tsuboi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6286681A priority Critical patent/JPS57176406A/en
Publication of JPS57176406A publication Critical patent/JPS57176406A/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
    • G05B5/00—Anti-hunting arrangements
    • G05B5/01—Anti-hunting arrangements electric

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE:To extend the life of mechaism, by preventing frequent oscillation of a valve control output at steady-state without differentiating operation, when the deviation between a process variable signal and a set point is within a specified value. CONSTITUTION:A deviation TER between a temperature rise set point TUP and a process variable signal TWOB from a gate temperature sensor 4 is processed at rate and integral operation sections 6 and 7, and a part 13 controlling the differential operation is added to a differentiation operation section 8 for processing. The part 13 does not make differentiation operation when the deviation TER is within a prescribed value. The outputs of the operation sections 6, 7, and 8 are synthesized to obtain a signal TC, which is applied to a control variable process 10 via an output limiter 9. Thus, the tracing of a slight temperature change when no load fluctuation takes place is not done, allowing to prevent oscillating operation of the mechanism and to extend the life.
JP6286681A 1981-04-24 1981-04-24 Process controlling method Pending JPS57176406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6286681A JPS57176406A (en) 1981-04-24 1981-04-24 Process controlling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6286681A JPS57176406A (en) 1981-04-24 1981-04-24 Process controlling method

Publications (1)

Publication Number Publication Date
JPS57176406A true JPS57176406A (en) 1982-10-29

Family

ID=13212635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6286681A Pending JPS57176406A (en) 1981-04-24 1981-04-24 Process controlling method

Country Status (1)

Country Link
JP (1) JPS57176406A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141187A (en) * 1974-10-04 1976-04-06 Hitachi Ltd HEIRUUPUSEIGYOSOCHI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141187A (en) * 1974-10-04 1976-04-06 Hitachi Ltd HEIRUUPUSEIGYOSOCHI

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