Title:
SHIFT RANGE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/059676
Kind Code:
A1
Abstract:
This shift range control device (40) is provided with drive circuits (41, 42) and a control unit (50). The drive circuits (41, 42) have switching elements (411-416, 421-426) for switching the electrical conduction of motor windings (11, 12). The control unit (50) has a motor angle computation unit (51), a drive control unit (53), and a duty limiting unit (55). The motor angle computation unit (51) computes a motor angle on the basis of a signal acquired from a rotational angle sensor (13) that detects the rotational position of a motor (10). The drive control unit (53) controls the driving of the motor (10) so that the motor angle reaches a desired rotation angle that corresponds to a desired shift range. The duty limiting unit (55) determines, in accordance with the motor angle, a duty limiting value for limiting the duty, which is the proportion of ON time of the switching elements (411-416, 421-426) in a prescribed period.
Inventors:
SAKAGUCHI KOJI (JP)
Application Number:
PCT/JP2019/036258
Publication Date:
March 26, 2020
Filing Date:
September 16, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02P6/16; F16H61/32; H02P27/08
Foreign References:
| JP2003247638A | 2003-09-05 | |||
| JP2008032176A | 2008-02-14 | |||
| JP2018135919A | 2018-08-30 |
Attorney, Agent or Firm:
HATTORI Masaki (JP)
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