JPS56108110A - Method and device for process control - Google Patents

Method and device for process control

Info

Publication number
JPS56108110A
JPS56108110A JP997080A JP997080A JPS56108110A JP S56108110 A JPS56108110 A JP S56108110A JP 997080 A JP997080 A JP 997080A JP 997080 A JP997080 A JP 997080A JP S56108110 A JPS56108110 A JP S56108110A
Authority
JP
Japan
Prior art keywords
liquid storage
storage amount
output
amount
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
JP997080A
Other languages
Japanese (ja)
Inventor
Norio Nonagase
Shin Taniguchi
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.)
Ebara Corp
Original Assignee
Ebara 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 Ebara Corp filed Critical Ebara Corp
Priority to JP997080A priority Critical patent/JPS56108110A/en
Publication of JPS56108110A publication Critical patent/JPS56108110A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Landscapes

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

Abstract

PURPOSE:To improve the response property, by giving a control after detecting the difference between the liquid storage amount of the state of reference fluctuation and the detection signal of liquid storage amount. CONSTITUTION:The storage mechanism 21 stores the reference fluctuation degree of the liquid storage amount set previously as the normal operation state and in the form of the time function, and then delivers the reference amount of liquid storage. This output is compared with the output of actual liquid storage amount of the level detector 10 through the comparator 22 to obtain a deviation. Then the signal is produced in each when the deviation exceeds the value of allowance to throttle the switch valve 4. Furthermore an operation is carried out when necessary to wash the filter 1.
JP997080A 1980-02-01 1980-02-01 Method and device for process control Pending JPS56108110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP997080A JPS56108110A (en) 1980-02-01 1980-02-01 Method and device for process control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP997080A JPS56108110A (en) 1980-02-01 1980-02-01 Method and device for process control

Publications (1)

Publication Number Publication Date
JPS56108110A true JPS56108110A (en) 1981-08-27

Family

ID=11734772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP997080A Pending JPS56108110A (en) 1980-02-01 1980-02-01 Method and device for process control

Country Status (1)

Country Link
JP (1) JPS56108110A (en)

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