公开(公告)号：US20240166177A1

公开(公告)日：2024-05-23

申请号：US18282611

申请日：2022-03-07

申请人： Hitachi Astemo, Ltd.

发明人： Suguru SAOTOME ,  Hirohito TADA ,  Norikazu MATSUZAKI ,  Masayuki KIKAWA

IPC分类号： B60T8/172 ,  B60T8/171 ,  B60T13/14 ,  B60T13/58 ,  B60T13/74 ,  H02P3/04

CPC分类号： B60T8/172 ,  B60T8/171 ,  B60T13/588 ,  B60T13/746 ,  H02P3/04 ,  B60T13/145

摘要： In an application, which refers to holding actuation of a parking brake mechanism (a rotation-linear motion conversion mechanism), a braking control apparatus (a parking brake control apparatus) determines an application stroke from a load detection point including as far as an overshoot amount. The load detection point is a generation point of a thrust force that is detected due to a current flowing in the electric motor. The overshoot amount is generated based on a rotation of an electric motor due to inertia after driving of the electric motor is stopped. The braking control apparatus determines a target release stroke in a release, which is release actuation of the parking brake mechanism, according to the application stroke. The braking control apparatus outputs a control instruction to conduct the release based on the target release stroke.