JPS55102002A - Operation instruction control unit for a plurality of units - Google Patents

Operation instruction control unit for a plurality of units

Info

Publication number
JPS55102002A
JPS55102002A JP983479A JP983479A JPS55102002A JP S55102002 A JPS55102002 A JP S55102002A JP 983479 A JP983479 A JP 983479A JP 983479 A JP983479 A JP 983479A JP S55102002 A JPS55102002 A JP S55102002A
Authority
JP
Japan
Prior art keywords
sets
process variables
section
past
tendency
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
JP983479A
Other languages
Japanese (ja)
Inventor
Hiroaki Sugihara
Norio Yamashita
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 JP983479A priority Critical patent/JPS55102002A/en
Publication of JPS55102002A publication Critical patent/JPS55102002A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE: To enable the control closer to reality even in the system greater in the variation of process variables, by determining the number of required operation sets taking into consideration the tendency in the change in the past process variables.
CONSTITUTION: Air conditioning load is calculated in a given equation based on the flow and water amount obtained from the sampling of measurement section 8, and operation is made based in the measurement value at present, weighting coefficient set and stored in advance in the set input section 12, and past process variables stored, the process variables this time can be calculated. The number of sets determining section 9 devides the process variables this time with the rated load per one set of chiller unit to determine the required number of sets of chiller unit 1. The instruction section 10 outputs instruction to operate with this number of sets of chiller units. With this constitution, the tendency in the change in the air conditioning load in the past is grasped as the process variables and the required number of sets are determined, allowing to perform control closest to actual state and the number of changes of running sets can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP983479A 1979-01-31 1979-01-31 Operation instruction control unit for a plurality of units Pending JPS55102002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP983479A JPS55102002A (en) 1979-01-31 1979-01-31 Operation instruction control unit for a plurality of units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP983479A JPS55102002A (en) 1979-01-31 1979-01-31 Operation instruction control unit for a plurality of units

Publications (1)

Publication Number Publication Date
JPS55102002A true JPS55102002A (en) 1980-08-04

Family

ID=11731149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP983479A Pending JPS55102002A (en) 1979-01-31 1979-01-31 Operation instruction control unit for a plurality of units

Country Status (1)

Country Link
JP (1) JPS55102002A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119003A (en) * 1982-01-07 1983-07-15 Nagano Keiki Seisakusho:Kk Controller for number of devices in operation
JPS59199021A (en) * 1983-04-26 1984-11-12 Mitsubishi Heavy Ind Ltd Controlling method of wet lime-gypsum desulfurization plant
JPS61224002A (en) * 1985-03-29 1986-10-04 Tokyo Gas Co Ltd Controlling method for number of operated units of water cooling and warming machine
JPH03182696A (en) * 1989-12-12 1991-08-08 Meidensha Corp Number of pumps control device for variable speed pump
US5289868A (en) * 1991-04-10 1994-03-01 Hitachi, Ltd. Absorption chiller heater and unit-type air conditioning system
WO1999017020A1 (en) * 1997-09-29 1999-04-08 Hitachi Construction Machinery Co., Ltd. Torque control device for hydraulic pump of hydraulic construction equipment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119003A (en) * 1982-01-07 1983-07-15 Nagano Keiki Seisakusho:Kk Controller for number of devices in operation
JPS59199021A (en) * 1983-04-26 1984-11-12 Mitsubishi Heavy Ind Ltd Controlling method of wet lime-gypsum desulfurization plant
JPH0445205B2 (en) * 1983-04-26 1992-07-24 Mitsubishi Heavy Ind Ltd
JPS61224002A (en) * 1985-03-29 1986-10-04 Tokyo Gas Co Ltd Controlling method for number of operated units of water cooling and warming machine
JPH03182696A (en) * 1989-12-12 1991-08-08 Meidensha Corp Number of pumps control device for variable speed pump
US5289868A (en) * 1991-04-10 1994-03-01 Hitachi, Ltd. Absorption chiller heater and unit-type air conditioning system
WO1999017020A1 (en) * 1997-09-29 1999-04-08 Hitachi Construction Machinery Co., Ltd. Torque control device for hydraulic pump of hydraulic construction equipment
US6183210B1 (en) 1997-09-29 2001-02-06 Hitachi Construction Machinery Co. Ltd. Torque control device for hydraulic pump in hydraulic construction equipment

Similar Documents

Publication Publication Date Title
JPS55125334A (en) Fuel controller
ES8200493A1 (en) Heat pump control system
JPS5297025A (en) Air fuel ration controller
JPS55102002A (en) Operation instruction control unit for a plurality of units
JPS57144833A (en) Temperature control of air conditioner
JPS5637441A (en) Control device for air conditioner
JPS5485654A (en) Processor for data information
JPS54114413A (en) Blast furnace operation
JPS52146655A (en) Data processing and controlling unit of balances, etc.
JPS5363740A (en) Temperature controller
JPS5523528A (en) Multi-programming control system
JPS55164904A (en) Control unit for automobile having temperature signal
JPS5743150A (en) Control device for air conditioner
JPS54114831A (en) Furnace pressure control system
JPS5319540A (en) Collective control system in power system
JPS566022A (en) Engine controlling system
JPS52117215A (en) Control of continuous heat treating furnace
JPS5788908A (en) Method for controlling product dimension of wire rod finishing block mill
JPS567927A (en) Starting and stoppage controller
JPS5423238A (en) Control device for air conditioner
JPS5428908A (en) Turbine control system with rotor stress prediction
JPS53147957A (en) Reactive power compensator control system
JPS5533234A (en) Program reconfiguration system of sequential controller
JPS5688510A (en) Centralized temperature controller of refrigerator
JPS53115412A (en) Exhaust gas reflux controller