JPS57122683A - Speed controller for motor - Google Patents

Speed controller for motor

Info

Publication number
JPS57122683A
JPS57122683A JP56006525A JP652581A JPS57122683A JP S57122683 A JPS57122683 A JP S57122683A JP 56006525 A JP56006525 A JP 56006525A JP 652581 A JP652581 A JP 652581A JP S57122683 A JPS57122683 A JP S57122683A
Authority
JP
Japan
Prior art keywords
current
adder
signal
outputs
rate
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
JP56006525A
Other languages
Japanese (ja)
Inventor
Tadashige Furuta
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56006525A priority Critical patent/JPS57122683A/en
Publication of JPS57122683A publication Critical patent/JPS57122683A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
    • H02P7/293—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC using phase control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To prevent variations in the speed ratio of individual stands while checking the rupture of rolled material by making the most of the drooping characteristic when the tension varies sharply, while making it zero value at normal operation. CONSTITUTION:Against a sharp change in the current Ia detected with a current detector 17, a rate circuit 21 outputs a signal following the current Ia at a certain rate and the current Ia as signal I0 when the current Ia is constant or varies at a small rate. An adder 22 outputs a difference DELTAI=Ia-I0 between the current Ia and the signal I0. Results DELTANDR multiplying an output DELTAI of the adder 22 and a gain G of a gain setting device 18 are added to a speed reference Ns as a drooping characteristic by means of an adder 12. This can prevent possible rupture of a rolled material when a sharp change in the tension takes place while checking variations in the speed ratio of individual stands during the normal rolling operation.
JP56006525A 1981-01-21 1981-01-21 Speed controller for motor Pending JPS57122683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56006525A JPS57122683A (en) 1981-01-21 1981-01-21 Speed controller for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56006525A JPS57122683A (en) 1981-01-21 1981-01-21 Speed controller for motor

Publications (1)

Publication Number Publication Date
JPS57122683A true JPS57122683A (en) 1982-07-30

Family

ID=11640775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56006525A Pending JPS57122683A (en) 1981-01-21 1981-01-21 Speed controller for motor

Country Status (1)

Country Link
JP (1) JPS57122683A (en)

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