Title:
Position estimation device, motor drive control device, position estimation method and program
Document Type and Number:
Japanese Patent JP6344151
Kind Code:
B2
Abstract:
A position estimation device for estimating a position of a rotator of a motor includes an estimation unit configured to estimate a rotational position of the rotator of the motor using a magnetic flux estimation value of the motor, which is calculated by inputting an electric voltage instruction value to be inputted to the motor and a coil electric current value detected from the motor into a motor model in which the motor is identified; and a derivation unit configured to derive a magnetic flux deviation amount due to a distortion of a magnetic flux waveform of the motor according to the estimated rotational position. The estimation unit corrects the magnetic flux estimation value based on the derived magnetic flux deviation amount, modifies the estimated rotational position based on the corrected magnetic flux estimation value, and outputs the modified rotational position.
Inventors:
Norihiro Yamamoto
Haruyuki Suzuki
Muranaka Masayuki
Haruyuki Suzuki
Muranaka Masayuki
Application Number:
JP2014175129A
Publication Date:
June 20, 2018
Filing Date:
August 29, 2014
Export Citation:
Assignee:
株式会社リコー
International Classes:
H02P21/24; H02P6/06; H02P6/17; H02P6/18; H02P6/182; H02P21/14; H02P21/18; H02P23/14
Domestic Patent References:
| JP2006223089A | ||||
| JP2010022189A | ||||
| JP63031493A | ||||
| JP2012029559A | ||||
| JP2004032905A |
Foreign References:
| US20130088179 | ||||
| US20130069577 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito