Title:
SHIFT RANGE CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2020118270
Kind Code:
A
Abstract:
To provide a shift range control device capable of appropriately stopping a motor at a target position.SOLUTION: A drive control part drives a motor in such a manner that an encoder count value θen becomes a target count value θcmd corresponding to a target shift range, and stops a rotor through fixed phase electrification control when the encoder count value θen reaches the target count value θcmd. The drive control part reduces a current to be electrified to the motor in accordance with a difference between a brake torque Tb which is a torque to be generated when separating from a vibration center and an acceleration torque Ta which is a torque to be generated when moving toward the vibration center while maintaining a state where the brake torque Tb is greater than the acceleration torque Ta in a case where the rotor is vibrated with respect to a stop position corresponding to an electrification phase during the fixed phase electrification control. Thus, the motor is appropriately stopped at a target position.SELECTED DRAWING: Figure 9
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Inventors:
SAKAGUCHI KOJI
YAMADA JUN
MIYANO HARUKA
YAMADA JUN
MIYANO HARUKA
Application Number:
JP2019011911A
Publication Date:
August 06, 2020
Filing Date:
January 28, 2019
Export Citation:
Assignee:
DENSO CORP
International Classes:
F16H61/32; H02P3/06; H02P21/05
Domestic Patent References:
| JP2018135919A | 2018-08-30 | |||
| JP2017194147A | 2017-10-26 | |||
| JP2018105450A | 2018-07-05 | |||
| JP2007271036A | 2007-10-18 |
Attorney, Agent or Firm:
Masaki Hattori