Title:
Motor control device and electric power steering device
Document Type and Number:
Japanese Patent JP6361562
Kind Code:
B2
Abstract:
A motor controller includes an H-bridge circuit, a switching-element driving circuit, a motor-current detection circuit, a sample hold circuit executing a sample hold of an output of the motor-current detection circuit at every half period and outputting the output of the motor-current detection circuit as a first signal and a second signal, according to a PWM output timing of the switching-element driving circuit, and a motor-current calculation circuit selecting a signal that is larger between the first signal and the second signal as a selection signal, calculating a value of the selection signal as an absolute value of a motor current, determining a current direction based on a relation between the selection signal and a PWM output signal at a sample timing that the selection signal is obtained.
Inventors:
Junichi Ogoshi
Yuta Uozaki
Muramatsu
Yuta Uozaki
Muramatsu
Application Number:
JP2015084852A
Publication Date:
July 25, 2018
Filing Date:
April 17, 2015
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H02P7/29
Domestic Patent References:
| JP2007295753A | ||||
| JP5184194A | ||||
| JP2006182254A |
Attorney, Agent or Firm:
Masaki Hattori