JPS553013A - Fault detecting device of control unit - Google Patents

Fault detecting device of control unit

Info

Publication number
JPS553013A
JPS553013A JP7423478A JP7423478A JPS553013A JP S553013 A JPS553013 A JP S553013A JP 7423478 A JP7423478 A JP 7423478A JP 7423478 A JP7423478 A JP 7423478A JP S553013 A JPS553013 A JP S553013A
Authority
JP
Japan
Prior art keywords
model
difference
fault
correction
case
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.)
Granted
Application number
JP7423478A
Other languages
Japanese (ja)
Other versions
JPS6229804B2 (en
Inventor
Nobuo Kurihara
Mitsuyo Nishikawa
Shigeyoshi Kawano
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 JP7423478A priority Critical patent/JPS553013A/en
Publication of JPS553013A publication Critical patent/JPS553013A/en
Publication of JPS6229804B2 publication Critical patent/JPS6229804B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing And Monitoring For Control Systems (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE:To secure the optimum fault detection at all times by deciding whether or not the model correction is possible in case the difference is out of the setting range between the models provided to detect the fault of the arithmetic part and the operation detection part and the corresponding output. CONSTITUTION:Model 9 and 10 are provided to detect the fault of arithmetic part 1 and the operation detection part each. Comparator 11 is provided to obtain difference epsilon3 of the output between model 9 and corresponding part 1, and comparator 12 is for obtaining difference epsilon2 of the output between model 10 and the corresponding operation detection part respectively. Then in case the difference epsilon3 and epsilon2 are out of each limit value set respectively, whether or not the model correction is possible is decided at decision part 13 according to the degree of drift against the average value of difference. And in case the correction is possible, model correction 14 is carried out with a fixed time via the signal obtained from the object of the fault detection. Thus, the optimum fault detection becomes possible at all times.
JP7423478A 1978-06-21 1978-06-21 Fault detecting device of control unit Granted JPS553013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7423478A JPS553013A (en) 1978-06-21 1978-06-21 Fault detecting device of control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7423478A JPS553013A (en) 1978-06-21 1978-06-21 Fault detecting device of control unit

Publications (2)

Publication Number Publication Date
JPS553013A true JPS553013A (en) 1980-01-10
JPS6229804B2 JPS6229804B2 (en) 1987-06-29

Family

ID=13541263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7423478A Granted JPS553013A (en) 1978-06-21 1978-06-21 Fault detecting device of control unit

Country Status (1)

Country Link
JP (1) JPS553013A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10228304A (en) * 1997-02-13 1998-08-25 Mitsubishi Electric Corp Processing equipment
JP2000181526A (en) * 1998-12-16 2000-06-30 Chugoku Electric Power Co Inc:The Plant state estimation / prediction apparatus and method
JP2014059910A (en) * 2009-08-28 2014-04-03 Hitachi Ltd Method for monitoring state of facility

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10228304A (en) * 1997-02-13 1998-08-25 Mitsubishi Electric Corp Processing equipment
JP2000181526A (en) * 1998-12-16 2000-06-30 Chugoku Electric Power Co Inc:The Plant state estimation / prediction apparatus and method
JP2014059910A (en) * 2009-08-28 2014-04-03 Hitachi Ltd Method for monitoring state of facility

Also Published As

Publication number Publication date
JPS6229804B2 (en) 1987-06-29

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