JPS56127212A - Water level control method - Google Patents

Water level control method

Info

Publication number
JPS56127212A
JPS56127212A JP2918280A JP2918280A JPS56127212A JP S56127212 A JPS56127212 A JP S56127212A JP 2918280 A JP2918280 A JP 2918280A JP 2918280 A JP2918280 A JP 2918280A JP S56127212 A JPS56127212 A JP S56127212A
Authority
JP
Japan
Prior art keywords
water level
level
programmed
rate
calculates
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
JP2918280A
Other languages
Japanese (ja)
Inventor
Masahiro Goto
Kunio Yamanaka
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 JP2918280A priority Critical patent/JPS56127212A/en
Publication of JPS56127212A publication Critical patent/JPS56127212A/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)
  • Barrages (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE:To give an accurate correction to the programmed value and enhance the reliability of control for the water level, by deciding the inflow rate from the safety limit level that is obtained by the predictive error between the predictive outflow rate according to the environmental condition and that based on the degree of control safety. CONSTITUTION:The outflow rate and the water level of the reservoir 1 are measured by the outflow rate measuring device 3 and water level measuring device 4, respectively. The parameter necessary for a prediction is given to the outflow predicting device 6 from the constant setter 5. The device 6 calculates the predictive error and then delivers it to the safe level arithmetic device 7. The device 7 receives the parameter necessary for calculation of the safe level for operation from the constant setter 8, and then calculates the lower limit level for safety and delivers it to the programmed inflow rate arithmetic device 9. The device 9 calculates a programmed flow rate based on the optimum condition to keep the water level within the upper and lower limit values and based on the outputs of the devices 6 and 7 plus the constant setter 10, respectively. Then the inflow adjuster 2 is controlled. The programmed value is corrected by the correction deciding device 11 based on the output of the device 4, and then the set value of the setter 10 is corrected.
JP2918280A 1980-03-10 1980-03-10 Water level control method Pending JPS56127212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2918280A JPS56127212A (en) 1980-03-10 1980-03-10 Water level control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2918280A JPS56127212A (en) 1980-03-10 1980-03-10 Water level control method

Publications (1)

Publication Number Publication Date
JPS56127212A true JPS56127212A (en) 1981-10-05

Family

ID=12269063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2918280A Pending JPS56127212A (en) 1980-03-10 1980-03-10 Water level control method

Country Status (1)

Country Link
JP (1) JPS56127212A (en)

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