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Patent Searching and Data


Title:
TRANSMISSION CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/125689
Kind Code:
A1
Abstract:
Provided is a transmission control system that enables more precise control of the transmission ratio. This transmission control system is provided with a motor 3, an actuator 11, a transmission 13, a position sensor 4, a current sensor 5, and a control unit 1. The control unit 1 includes: a drive unit that drives the motor 3 while the vehicle is stopped; and a first estimation unit that estimates the initial transmission ratio, which indicates the transmission ratio when the ignition switch is turned on, on the basis of a rotation position detected by the position sensor 4, a load current detected by the current sensor 5, and a characteristic curve over a period during which the drive unit is operating.

Inventors:
SAKAMOTO HIROYUKI (JP)
SEKIGUCHI HIDEKI (JP)
OHSAWA FUMIHIRO (JP)
TANAKA YUTA (JP)
Application Number:
PCT/JP2016/052568
Publication Date:
August 11, 2016
Filing Date:
January 29, 2016
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16H61/02; F16H59/70; F16H61/66; H02P29/00
Foreign References:
JPH0642618A1994-02-18
JP2001099303A2001-04-10
JPH09250631A1997-09-22
Other References:
See also references of EP 3255315A4
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
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