JPS56149604A - Process controller - Google Patents

Process controller

Info

Publication number
JPS56149604A
JPS56149604A JP5263380A JP5263380A JPS56149604A JP S56149604 A JPS56149604 A JP S56149604A JP 5263380 A JP5263380 A JP 5263380A JP 5263380 A JP5263380 A JP 5263380A JP S56149604 A JPS56149604 A JP S56149604A
Authority
JP
Japan
Prior art keywords
output
meter
terminal
driving signal
deviation
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
JP5263380A
Other languages
Japanese (ja)
Inventor
Toru Matsumoto
Ichiu Ishii
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
Hokushin Electric Works Ltd
Yokogawa Hokushin 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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP5263380A priority Critical patent/JPS56149604A/en
Publication of JPS56149604A publication Critical patent/JPS56149604A/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
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/26—Automatic controllers electric in which the output signal is a pulse-train
    • G05B11/28—Automatic controllers electric in which the output signal is a pulse-train using pulse-height modulation; using pulse-width modulation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE:To reduce the working frequency of operation terminal, by supplying the output of a control meter to the operation terminal only for the period during which the differential value of deviation is positive. CONSTITUTION:The output (m) of the control meter 4 is sent to the pulse duration converter 7 via the blind sector generator 13. The pulse duration output is sent to the operation terminal 5 via the contacts 9 and 10 to be used as the open-direction or close-direction driving signal. The output (m) is also supplied to the deciding circuit 8 to be used as the contact driving signal that drives the terminal 5 in an open or close mode according to the plus or minus. This driving signal is applied together with the output of the deciding means 17 to the AND circuits 14 and 15. The signal obtained by making the deviation (n) supplied from the meter 4 pass through the absolute value differentiating circuit 16 is applied to the circuit 17. As a result, the output of the meter 4 is actually applied to the terminal 5 only in case the deviation increases.
JP5263380A 1980-04-21 1980-04-21 Process controller Pending JPS56149604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5263380A JPS56149604A (en) 1980-04-21 1980-04-21 Process controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5263380A JPS56149604A (en) 1980-04-21 1980-04-21 Process controller

Publications (1)

Publication Number Publication Date
JPS56149604A true JPS56149604A (en) 1981-11-19

Family

ID=12920220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5263380A Pending JPS56149604A (en) 1980-04-21 1980-04-21 Process controller

Country Status (1)

Country Link
JP (1) JPS56149604A (en)

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