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JPS5458178A - Control system - Google Patents

Control system

Info

Publication number
JPS5458178A
JPS5458178A JP12438177A JP12438177A JPS5458178A JP S5458178 A JPS5458178 A JP S5458178A JP 12438177 A JP12438177 A JP 12438177A JP 12438177 A JP12438177 A JP 12438177A JP S5458178 A JPS5458178 A JP S5458178A
Authority
JP
Japan
Prior art keywords
control
amount
unit
pointing
cfw
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
JP12438177A
Other languages
Japanese (ja)
Inventor
Masaaki Tanishi
Kazuo Kaira
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 JP12438177A priority Critical patent/JPS5458178A/en
Publication of JPS5458178A publication Critical patent/JPS5458178A/en
Pending legal-status Critical Current

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  • Feedback Control In General (AREA)

Abstract

PURPOSE: To control a control object smoothly and in optimum, of which ineffective time varies sharply, by arranging a control apparatus having a mode for controlling the control amount of a control object and a mode for controlling an operation amount and switching the control apparatus according to the state of the control system.
CONSTITUTION: In CFW (Constant Feeder Weigher) control, CFW consists of a pointing belt 10 and a weighing belt 11, and the pointing amount of a material 13 is varied by varying the revolution speed of the weighing belt 11. The pointing amount of the material is obtained by adding the weight detected by a load cell 14 and the pointing speed detected by a speed detector 15 to a multiplication unit 16, and applied to the control unit as a control amount PV. The control amount V is applied to arithmetic circuits 1 and 2, and the control of control amount and operation amount is carried out. A switching judging unit 3 connects the arithmetic unit 2 to an operation-amount holding unit 4, when the deviation between the operation amount and the control amount is larger than the presribed value, and connects the arithmetic unit 1 to the operation-amount holding unit 4 when the deviation is small
COPYRIGHT: (C)1979,JPO&Japio
JP12438177A 1977-10-19 1977-10-19 Control system Pending JPS5458178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12438177A JPS5458178A (en) 1977-10-19 1977-10-19 Control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12438177A JPS5458178A (en) 1977-10-19 1977-10-19 Control system

Publications (1)

Publication Number Publication Date
JPS5458178A true JPS5458178A (en) 1979-05-10

Family

ID=14883988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12438177A Pending JPS5458178A (en) 1977-10-19 1977-10-19 Control system

Country Status (1)

Country Link
JP (1) JPS5458178A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144905A (en) * 1982-02-23 1983-08-29 Mitsubishi Heavy Ind Ltd Controller
KR100896626B1 (en) * 2002-11-14 2009-05-08 주식회사 포스코 Apparatus for controlling constant feed weight using level of coke oven hopper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144905A (en) * 1982-02-23 1983-08-29 Mitsubishi Heavy Ind Ltd Controller
KR100896626B1 (en) * 2002-11-14 2009-05-08 주식회사 포스코 Apparatus for controlling constant feed weight using level of coke oven hopper

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