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JPS55162102A - Redundancy feedback controller - Google Patents

Redundancy feedback controller

Info

Publication number
JPS55162102A
JPS55162102A JP7089979A JP7089979A JPS55162102A JP S55162102 A JPS55162102 A JP S55162102A JP 7089979 A JP7089979 A JP 7089979A JP 7089979 A JP7089979 A JP 7089979A JP S55162102 A JPS55162102 A JP S55162102A
Authority
JP
Japan
Prior art keywords
circuit
redundancy
output
control circuit
difference
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
JP7089979A
Other languages
Japanese (ja)
Inventor
Toa Okada
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7089979A priority Critical patent/JPS55162102A/en
Publication of JPS55162102A publication Critical patent/JPS55162102A/en
Pending legal-status Critical Current

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  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To make it possible to improve the precision of the detection of an abnormal redundancy system with simple constitution without causing a runaway even in case of abnormality, by making an output supervisory circuit exercise a supervision over a difference in output between control circuits at any time.
CONSTITUTION: Redundancy control circuit 12 computes 8 a difference between command signal A and feedback signal 6 from controlled system 4 and on the basis of its output, control signal C1 is generated by control circuit 1a to multiply the signal of circuit 1a, generated by coefficient unit 10a, by a number (generated by a 1/redundancy control circuit). In the same way, redundancy control circuit 13 also has difference operator 9, control circuit 1b and coefficient unit 10b. Here, output signals C1 and C2 of control circuits 1a and 1b are supplied to output supervisory circuit 2 to exercise a supervision over their difference all the time and those outputs are summed up 11 and applied to circuit 4, so that when one is normal while the other is put out of control, the controlled system will never become abnormal. Consequently, the simple constitution can improve the abnormality detection precision of the redundancy system without causing a runaway even in case of abnormality.
COPYRIGHT: (C)1980,JPO&Japio
JP7089979A 1979-06-04 1979-06-04 Redundancy feedback controller Pending JPS55162102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7089979A JPS55162102A (en) 1979-06-04 1979-06-04 Redundancy feedback controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7089979A JPS55162102A (en) 1979-06-04 1979-06-04 Redundancy feedback controller

Publications (1)

Publication Number Publication Date
JPS55162102A true JPS55162102A (en) 1980-12-17

Family

ID=13444830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7089979A Pending JPS55162102A (en) 1979-06-04 1979-06-04 Redundancy feedback controller

Country Status (1)

Country Link
JP (1) JPS55162102A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59148594A (en) * 1983-02-12 1984-08-25 Matsushita Electric Ind Co Ltd Electric cleaning machine
JPS59148596A (en) * 1983-02-12 1984-08-25 Matsushita Electric Ind Co Ltd Electric cleaning machine
JPS59148595A (en) * 1983-02-12 1984-08-25 Matsushita Electric Ind Co Ltd Electric cleaning machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59148594A (en) * 1983-02-12 1984-08-25 Matsushita Electric Ind Co Ltd Electric cleaning machine
JPS59148596A (en) * 1983-02-12 1984-08-25 Matsushita Electric Ind Co Ltd Electric cleaning machine
JPS59148595A (en) * 1983-02-12 1984-08-25 Matsushita Electric Ind Co Ltd Electric cleaning machine

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