Title:
CONTROL DEVICE AND TRANSMISSION MECHANISM
Document Type and Number:
WIPO Patent Application WO/2019/058662
Kind Code:
A1
Abstract:
Provided is a control device for a shift-by-wire type transmission mechanism having: a plate which rotates with respect to the output shaft of a motor; and a transmission in which a shift position is switched by rotation of the plate. The control device has a control unit that adjusts a drive signal for the motor and that controls rotation of the output shaft, a drive unit that supplies, to the motor, a current supplied from an external power source on the basis of the adjusted drive signal, a current detection unit that detects a drive current, and a position detection unit that detects a rotation position of the motor and that outputs a position signal indicating the rotation position. The control unit calculates, by using the detected current and the position signal, a torque transmitted to the plate via the output shaft. The control unit monitors, regarding the direction of a torque calculated at the time of start of rotation of the output shaft, whether or not the magnitude of the torque calculated after start of rotation is less than zero, determines that the shift position has been switched in the case where the magnitude of the torque becomes less than zero, and adjusts the drive signal on the basis of the determination result.
Inventors:
TAMURA FUMITO (JP)
Application Number:
PCT/JP2018/022779
Publication Date:
March 28, 2019
Filing Date:
June 14, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
F16H61/32; F16H63/38; H02P29/40
Foreign References:
| JP2016142346A | 2016-08-08 | |||
| JP2012157925A | 2012-08-23 | |||
| JP2017028919A | 2017-02-02 |
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