Title:
ROTARY ENCODER AND SERVO CONTROL DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/185547
Kind Code:
A1
Abstract:
The purpose of the present invention is to solve the problem in which a motor no longer follows a control signal during high-speed rotation if high-precision positioning accuracy is achieved in a low-speed rotation range. A rotary encoder according to the present invention comprises a magnetic sensor unit, a high-precision incremental signal generating unit, a motor control signal generating unit, and a resolution switching control unit, and comprises a function in which a high-precision incremental signal (mechanical angle) is generated on the basis of phase information included in a low-precision incremental signal from the magnetic sensor unit and angle information included in a high-precision absolute signal from the magnetic sensor unit, a function in which a low-speed/high-precision motor control signal (electrical angle) is generated on the basis of the low-precision incremental signal and the high-precision incremental signal, a function in which a high-speed/low-precision motor control signal (electrical angle) is generated on the basis of the low-precision incremental signal and the high-precision incremental signal, and a function in which the low-speed/high-precision motor control signal is outputted during low-speed rotation of the motor, and the high-speed/low-precision motor control signal is outputted during high-speed rotation of the motor.
Inventors:
TADA JUNICHI (JP)
Application Number:
PCT/JP2021/008813
Publication Date:
September 09, 2022
Filing Date:
March 05, 2021
Export Citation:
Assignee:
IGARASHI ELECTRIC WORKS LTD (JP)
International Classes:
H02P6/16; H02K24/00
Domestic Patent References:
| WO2020170343A1 | 2020-08-27 |
Foreign References:
| JP2006194766A | 2006-07-27 | |||
| JPH06160113A | 1994-06-07 |
Attorney, Agent or Firm:
TAKEZAWA Soichi et al. (JP)
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