Title:
SHIFT RANGE SWITCHING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/098317
Kind Code:
A1
Abstract:
The present invention has play formed between a motor shaft (105) and an output shaft (15) and can use the play to drop an engagement member (26) into valleys (221–24). A motor drive system comprises drive circuits (41, 42), motor windings (11, 12), connection wiring (71, 72) that connects the drive circuits (41, 42) and motor windings (11, 12), and calculation units (51, 52). A plurality of motor drive control systems are provided so as to avoid the occurrence of intermediate range stop errors whereby the output shaft (15) stops as a result of the balance between torque including output shaft cogging torque, being cogging torque transmitted to the output shaft (14), and load torque caused by an impelling member (25), when an error has occurred in a motor drive system during mountain climbing, being during travel of an engagement member (26) from valleys (221–24) to ridges (226–228).
Inventors:
SAKAGUCHI KOJI (JP)
ITO TAKU (JP)
MIYANO HARUKA (JP)
ITO TAKU (JP)
MIYANO HARUKA (JP)
Application Number:
PCT/JP2018/042422
Publication Date:
May 23, 2019
Filing Date:
November 16, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F16H63/38; F16H61/32; F16H63/34; H02K7/00
Foreign References:
| JP2015010640A | 2015-01-19 | |||
| JP2017150618A | 2017-08-31 | |||
| JP2012212388A | 2012-11-01 | |||
| JP2016094949A | 2016-05-26 |
Attorney, Agent or Firm:
HATTORI Masaki (JP)
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