Title:
SERVO MOTOR
Document Type and Number:
Japanese Patent JPS6013449
Kind Code:
A
Abstract:
PURPOSE:To measure the output torque of a motor without using a pressure sensor or the like by providing slits at both ends of a rotational shaft of a rotor, forming encoders, and detecting the phase difference between the output pulses of encoders. CONSTITUTION:Slits 51, 52 which have equal size and interval are provided at both ends of a rotational shaft 3 of a rotor 1. Projectors 11, 12 and photoreceptors 21, 22 are respectively disposed in response to the slits 51, 52. Lights emitted from the projectors 11, 12 are respectively reflected on the slits 51, 52, and received by the photoreceptors 51, 52. Photoreception signals of the photoreceptors 21, 22 are converted into electric signals. The rotating speed of a servo motor is controlled by the electric signals.
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Inventors:
MIYANOO TETSUJI
MISHINA KAZUHIRO
TAKAHASHI KAZUHISA
MISHINA KAZUHIRO
TAKAHASHI KAZUHISA
Application Number:
JP12071683A
Publication Date:
January 23, 1985
Filing Date:
June 30, 1983
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G05D3/12; H02K11/00; (IPC1-7): H02K11/00; G05D3/12
Attorney, Agent or Firm:
Toshimaru Takemoto
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