JPS57101581A - Automatic stopping circuit for dc motor - Google Patents

Automatic stopping circuit for dc motor

Info

Publication number
JPS57101581A
JPS57101581A JP17674680A JP17674680A JPS57101581A JP S57101581 A JPS57101581 A JP S57101581A JP 17674680 A JP17674680 A JP 17674680A JP 17674680 A JP17674680 A JP 17674680A JP S57101581 A JPS57101581 A JP S57101581A
Authority
JP
Japan
Prior art keywords
variation
motor
load
voltage
circuit
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.)
Granted
Application number
JP17674680A
Other languages
Japanese (ja)
Other versions
JPH0135595B2 (en
Inventor
Takanori Kono
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.)
Nidec Precision Corp
Original Assignee
Nidec Copal 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 Nidec Copal Corp filed Critical Nidec Copal Corp
Priority to JP17674680A priority Critical patent/JPS57101581A/en
Publication of JPS57101581A publication Critical patent/JPS57101581A/en
Publication of JPH0135595B2 publication Critical patent/JPH0135595B2/ja
Granted 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
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

PURPOSE:To improve the detecting performance of an automatic stopping circuit for a DC motor by detecting the variation in a load as a voltage, converting the voltage into two signals having level difference, applying it to two integrating circuits of different time constants and detecting the variation in the load by inverting the output of both circuits. CONSTITUTION:In a drive circuit for a motor surrounded by a broken line, the variation in the load of a motor M is detected by the variation in the voltage (V-IRS) of a battery ES. A battery voltage is converted by dividing resistors R1-R3 into two voltages, which are inputted to integrating circuits respectively formed of R4, C1 and R5, C2. The time constant of the former integrating circuit is set to smaller than that of the latter integrating circuit. When a variation occurs at the load, a currentIwill vary so that the potential at the point m' becomes lower than that at the point n', and accordingly the output of a comparator CO is inverted. A flip-flop FF breaks the transistor T of the drive circuit with this inverted output.
JP17674680A 1980-12-15 1980-12-15 Automatic stopping circuit for dc motor Granted JPS57101581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17674680A JPS57101581A (en) 1980-12-15 1980-12-15 Automatic stopping circuit for dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17674680A JPS57101581A (en) 1980-12-15 1980-12-15 Automatic stopping circuit for dc motor

Publications (2)

Publication Number Publication Date
JPS57101581A true JPS57101581A (en) 1982-06-24
JPH0135595B2 JPH0135595B2 (en) 1989-07-26

Family

ID=16019074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17674680A Granted JPS57101581A (en) 1980-12-15 1980-12-15 Automatic stopping circuit for dc motor

Country Status (1)

Country Link
JP (1) JPS57101581A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183985A (en) * 1984-03-01 1985-09-19 Matsushita Electric Ind Co Ltd Malfunction detector of dc motor in magnetic video recorder/reproducer
US4767970A (en) * 1986-12-22 1988-08-30 Ampex Corporation Dynamic brake control for a tape drive system
JP2007223419A (en) * 2006-02-22 2007-09-06 Shimadzu Corp Hydraulic unit for vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183985A (en) * 1984-03-01 1985-09-19 Matsushita Electric Ind Co Ltd Malfunction detector of dc motor in magnetic video recorder/reproducer
US4767970A (en) * 1986-12-22 1988-08-30 Ampex Corporation Dynamic brake control for a tape drive system
JP2007223419A (en) * 2006-02-22 2007-09-06 Shimadzu Corp Hydraulic unit for vehicle

Also Published As

Publication number Publication date
JPH0135595B2 (en) 1989-07-26

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