JPS57161908A - Alarm output method in control system for following of target value - Google Patents

Alarm output method in control system for following of target value

Info

Publication number
JPS57161908A
JPS57161908A JP56046481A JP4648181A JPS57161908A JP S57161908 A JPS57161908 A JP S57161908A JP 56046481 A JP56046481 A JP 56046481A JP 4648181 A JP4648181 A JP 4648181A JP S57161908 A JPS57161908 A JP S57161908A
Authority
JP
Japan
Prior art keywords
alarm output
dot
control deviation
target value
alarm
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
JP56046481A
Other languages
Japanese (ja)
Inventor
Kenji Tsuchiya
Kunio Hasegawa
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 JP56046481A priority Critical patent/JPS57161908A/en
Publication of JPS57161908A publication Critical patent/JPS57161908A/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
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G05B23/024—Quantitative history assessment, e.g. mathematical relationships between available data; Functions therefor; Principal component analysis [PCA]; Partial least square [PLS]; Statistical classifiers, e.g. Bayesian networks, linear regression or correlation analysis; Neural networks
    • 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
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0267—Fault communication, e.g. human machine interface [HMI]
    • G05B23/027—Alarm generation, e.g. communication protocol; Forms of alarm

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Artificial Intelligence (AREA)
  • Evolutionary Computation (AREA)
  • Mathematical Physics (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

PURPOSE:To make an accurate decision possible, by detecting a control deviation and detecting a primary differential value concerning the time of the control deviation at the detection time and deciding on a basis of these two quantities whether an alarm output is necessary or not in case that the control for following of a target value is checked for defect. CONSTITUTION:In case that it is decided whether an alarm output is necessary or not, the alarm output is necessary when coordinates of (e, dot e) satisfy all of inequalities (1) and (2). In inequalities, (e) is a control deviation (=target value S-control variable value M), and C is a constant, and the dot (e) is a primary differential value concerning the time of the control deviation at the detection time of the control deviation. Further, (a), (b), and (c) are constants, and (a) and (b) are negative and satisfy¦a¦<¦b¦. Thus, when¦e¦ and dot ¦e¦ are small together or¦e¦ inclines to decrease rapidly even if¦e¦ is large, the alarm is not outputted. When¦e¦ and dot¦e¦ are large together or ¦e¦ inclines to increase rapidly even if¦e¦ is small, the alarm is outputted, thus performing an accurate discrimination.
JP56046481A 1981-03-31 1981-03-31 Alarm output method in control system for following of target value Pending JPS57161908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56046481A JPS57161908A (en) 1981-03-31 1981-03-31 Alarm output method in control system for following of target value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56046481A JPS57161908A (en) 1981-03-31 1981-03-31 Alarm output method in control system for following of target value

Publications (1)

Publication Number Publication Date
JPS57161908A true JPS57161908A (en) 1982-10-05

Family

ID=12748386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56046481A Pending JPS57161908A (en) 1981-03-31 1981-03-31 Alarm output method in control system for following of target value

Country Status (1)

Country Link
JP (1) JPS57161908A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057413A (en) * 1983-09-08 1985-04-03 Hitachi Ltd Abnormality detector
JPS62106509A (en) * 1985-11-05 1987-05-18 Canon Inc Positioning device
JPH04364055A (en) * 1991-06-11 1992-12-16 Canon Inc Positioning controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057413A (en) * 1983-09-08 1985-04-03 Hitachi Ltd Abnormality detector
JPS62106509A (en) * 1985-11-05 1987-05-18 Canon Inc Positioning device
JPH04364055A (en) * 1991-06-11 1992-12-16 Canon Inc Positioning controller

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