JPS5571196A - Load detector of pulse motor - Google Patents

Load detector of pulse motor

Info

Publication number
JPS5571196A
JPS5571196A JP14340478A JP14340478A JPS5571196A JP S5571196 A JPS5571196 A JP S5571196A JP 14340478 A JP14340478 A JP 14340478A JP 14340478 A JP14340478 A JP 14340478A JP S5571196 A JPS5571196 A JP S5571196A
Authority
JP
Japan
Prior art keywords
pulse
input
change
output
wave
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
JP14340478A
Other languages
Japanese (ja)
Inventor
Satoshi Kawasaki
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 JP14340478A priority Critical patent/JPS5571196A/en
Publication of JPS5571196A publication Critical patent/JPS5571196A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Stepping Motors (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

PURPOSE:To provide a pulse motor with a function as a load detector, by detecting time lag between change corresponding to the change-over of an exciting coil phase and change resulting from the revolution of a rotor from the change of input currents. CONSTITUTION:An exciting phase of a pulse motor 2 is changed over by means of a drive circuit 1 receiving pulse input from a pulse oscillator 10. The variation of coil currents is detected as the change a of the voltage of external resistance, and input to a differentiator 11. A pulse generator 13 puts out a pulse c when the output b of the differentiator 11 exceeds set value, and a gate circuit 12 closes a gate during the time when the pulse is input and a variation portion shown in d is removed. A wave-form converter 15 is in ON due to a pulse resulting from the revolution of a rotor through an amplifier 14, and a comparator 16 using the output f of the wave-form converter 15 and the output e of a square-wave generator 17, which employs the output c of the pulse generator 13 as input, as input puts out a pulse shown in g. Thus, the magnitude of load applied to a shaft can be decided.
JP14340478A 1978-11-22 1978-11-22 Load detector of pulse motor Pending JPS5571196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14340478A JPS5571196A (en) 1978-11-22 1978-11-22 Load detector of pulse motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14340478A JPS5571196A (en) 1978-11-22 1978-11-22 Load detector of pulse motor

Publications (1)

Publication Number Publication Date
JPS5571196A true JPS5571196A (en) 1980-05-29

Family

ID=15337973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14340478A Pending JPS5571196A (en) 1978-11-22 1978-11-22 Load detector of pulse motor

Country Status (1)

Country Link
JP (1) JPS5571196A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61161998A (en) * 1985-01-07 1986-07-22 Toshiro Higuchi Load detecting method of stepping motor
JPH0643049A (en) * 1991-09-24 1994-02-18 N F Keisoku Syst:Kk Load-torque measruing apparatus for stepping motor
US7052104B2 (en) 2002-09-30 2006-05-30 Brother Kogyo Kabushiki Kaisha Electronic device including mechanical module and method for obtaining alternative characteristic values for the device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61161998A (en) * 1985-01-07 1986-07-22 Toshiro Higuchi Load detecting method of stepping motor
JPH0643049A (en) * 1991-09-24 1994-02-18 N F Keisoku Syst:Kk Load-torque measruing apparatus for stepping motor
US7052104B2 (en) 2002-09-30 2006-05-30 Brother Kogyo Kabushiki Kaisha Electronic device including mechanical module and method for obtaining alternative characteristic values for the device

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