JPS554656A - Process control unit - Google Patents

Process control unit

Info

Publication number
JPS554656A
JPS554656A JP7784078A JP7784078A JPS554656A JP S554656 A JPS554656 A JP S554656A JP 7784078 A JP7784078 A JP 7784078A JP 7784078 A JP7784078 A JP 7784078A JP S554656 A JPS554656 A JP S554656A
Authority
JP
Japan
Prior art keywords
manual
proportion
microprocessor
switch
auto
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
JP7784078A
Other languages
Japanese (ja)
Inventor
Akira Sumi
Fusatoshi Kataoka
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP7784078A priority Critical patent/JPS554656A/en
Publication of JPS554656A publication Critical patent/JPS554656A/en
Pending legal-status Critical Current

Links

Landscapes

  • Feedback Control In General (AREA)
  • Control By Computers (AREA)

Abstract

PURPOSE: To utilize the position-type operation to the digital operation-type program control unit, and thus ensuring application to the proportion adjustment meter or the proportion differential adjustment meter featuring the manual resetting function.
CONSTITUTION: The following units are provided: microprocessor 1; analog comparators 21W27 installed at the input side of microprocessor 1; A/D converter 3 provided at the output side of microprocessor 1; semiconductor switch 4; buffer amplifier 5; holding capacitor 6 provided at the input terminal; manual switch 7; and manual-auto change-over switch 8 each. Thus, the control output is obtained by the proportion operation or the proportion differential operation and via the position-type operation, and the resetting member is set by switch 7. And when the manual state is switched to the auto state, the correction value I, which is added to the auto output based on manual control output VM, proportion gain KP, deviation en and manual reset value manR each, is defined as IO=YM-KPen-manR. And microprocessor 1 features the function to change I to zero based on certain time constant TB.
COPYRIGHT: (C)1980,JPO&Japio
JP7784078A 1978-06-27 1978-06-27 Process control unit Pending JPS554656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7784078A JPS554656A (en) 1978-06-27 1978-06-27 Process control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7784078A JPS554656A (en) 1978-06-27 1978-06-27 Process control unit

Publications (1)

Publication Number Publication Date
JPS554656A true JPS554656A (en) 1980-01-14

Family

ID=13645235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7784078A Pending JPS554656A (en) 1978-06-27 1978-06-27 Process control unit

Country Status (1)

Country Link
JP (1) JPS554656A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150104U (en) * 1982-03-31 1983-10-07 株式会社島津製作所 controller
JPH0455215A (en) * 1990-06-25 1992-02-21 Mitsui Eng & Shipbuild Co Ltd Air shooter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965469A (en) * 1972-10-31 1974-06-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965469A (en) * 1972-10-31 1974-06-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150104U (en) * 1982-03-31 1983-10-07 株式会社島津製作所 controller
JPH0455215A (en) * 1990-06-25 1992-02-21 Mitsui Eng & Shipbuild Co Ltd Air shooter

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