公开(公告)号：US11654878B2

公开(公告)日：2023-05-23

申请号：US17438730

申请日：2020-05-20

Applicant: Hitachi Astemo, Ltd.

Inventor： Tetsuro Tamura

IPC: B60W10/02 ,  B60K17/348 ,  B60W30/188 ,  B60W40/10 ,  B60W40/12

CPC classification number: B60W10/02 ,  B60K17/348 ,  B60W30/188 ,  B60W40/10 ,  B60W40/12

Abstract: A transfer (13) that changes a distribution ratio of torque to be transmitted to a wheel using an electric motor (43), is controlled by a TF-ECU (18). The TF-ECU (18) includes a driver circuit (200) that drives the electric motor (43), a current sensor (53) that detects an actual current of the electric motor (43), and a microcomputer (100) that calculates a target current (I*) corresponding to a desired distribution ratio of torque and performs current feedback control for calculating an operation amount (D) of the electric motor (43) so as to adjust an actual current (Ia) to the target current (I*), and then outputs to the driver circuit (200) a drive signal corresponding to the operation amount (D).