JPS57212506A - Fault diagnostic device of analog controller - Google Patents

Fault diagnostic device of analog controller

Info

Publication number
JPS57212506A
JPS57212506A JP56097465A JP9746581A JPS57212506A JP S57212506 A JPS57212506 A JP S57212506A JP 56097465 A JP56097465 A JP 56097465A JP 9746581 A JP9746581 A JP 9746581A JP S57212506 A JPS57212506 A JP S57212506A
Authority
JP
Japan
Prior art keywords
control parameter
stored
analog controller
fault
inputted
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
JP56097465A
Other languages
Japanese (ja)
Inventor
Akira Ishigaki
Yoshikazu Yamashita
Hirobumi Koga
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56097465A priority Critical patent/JPS57212506A/en
Publication of JPS57212506A publication Critical patent/JPS57212506A/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

Landscapes

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

Abstract

PURPOSE:To detect a fault of an analog controller with high accuracy and at an early state, by holding a control parameter stored in a fault diagnostic device at a value being equal to a control parameter of the actual analog controller at all times. CONSTITUTION:An input signal 11 of each control operator Gi(s) of an analog controller 2, and an output value Oi are inputted to an input/output signal storage part 15 through a switch S1 and S6, and switches S4, S7, respectively, and are stored as 1 group of data. When the number of groups of data required for calculation has been stored, a stored data is outputted in order to a control parameter calculating circuit 16. From a control parameter calculating expression storage part 17, a calculating expression is inputted to the calculating circuit 16 through S5, and a control parameter is calculated. A value Pi of the calculated control parameter is inputted to a control parameter storage part 13 through a switch S9, and a control parameter stored before that time is lost. When the control parameter is updated, the mode is switched to a fault diagnostic mode, and a fault is detected at an early state.
JP56097465A 1981-06-25 1981-06-25 Fault diagnostic device of analog controller Pending JPS57212506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56097465A JPS57212506A (en) 1981-06-25 1981-06-25 Fault diagnostic device of analog controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56097465A JPS57212506A (en) 1981-06-25 1981-06-25 Fault diagnostic device of analog controller

Publications (1)

Publication Number Publication Date
JPS57212506A true JPS57212506A (en) 1982-12-27

Family

ID=14193043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56097465A Pending JPS57212506A (en) 1981-06-25 1981-06-25 Fault diagnostic device of analog controller

Country Status (1)

Country Link
JP (1) JPS57212506A (en)

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