Title:
SHIFT RANGE CONTROLLER
Document Type and Number:
Japanese Patent JP2020120547
Kind Code:
A
Abstract:
To provide a shift range controller capable of stopping a motor accurately.SOLUTION: A shift range controller 40 switches shift range by controlling drive of a motor 10 having a motor winding 11. An angle calculation part 51 calculates an encoder count value CNT, on the basis of a signal from a rotation angle sensor 13 for detecting the rotational position of a rotor 105. An electrification control section 55 drives the rotor 105 so that the encoder count value CNT becomes a target count value CNT_T according to a target shift range, and controls electrification to the motor winding 11, so that the rotor 105 stops at a position where the encoder count value CNT becomes the target count value CNT_T. During stop control for stopping the rotor 105, a zero point estimation part 56 estimates a speed 0 point, i.e., the timing when the revolution speed of the oscillating rotor 105 becomes 0. The electrification control section 55 switches current control at the estimated speed 0 point.SELECTED DRAWING: Figure 2
Inventors:
MIYANO HARUKA
SAKAGUCHI KOJI
YAMADA JUN
NAKAYAMA SEIJI
SAKAGUCHI KOJI
YAMADA JUN
NAKAYAMA SEIJI
Application Number:
JP2019011927A
Publication Date:
August 06, 2020
Filing Date:
January 28, 2019
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02P3/06; F16H61/02; F16H61/32
Domestic Patent References:
| JP2018040464A | 2018-03-15 | |||
| JP2001231278A | 2001-08-24 | |||
| JP2000131133A | 2000-05-12 | |||
| JPH08275571A | 1996-10-18 |
Attorney, Agent or Firm:
Masaki Hattori