公开(公告)号：US20200331317A1

公开(公告)日：2020-10-22

申请号：US16956356

申请日：2018-10-04

申请人： Hitachi Automotive Systems, Ltd.

发明人： Shingo NASU ,  Shinji SETO ,  Nobuyuki ICHIMARU ,  Ryusuke HIRAO

IPC分类号： B60G17/0165 ,  B60G17/019 ,  B60G21/08

摘要： Provided are a vehicle, a vehicle motion state estimation apparatus, and a method for estimating a vehicle motion state capable of highly accurately estimating a state quantity of a bounce motion of a vehicle having a non-linear suspension characteristic. The vehicle motion state estimation apparatus in a vehicle, in which wheels and a vehicle body are coupled via a suspension, includes a bounce motion estimation unit that estimates and outputs a state quantity of a bounce motion of the vehicle based on traveling state information of the vehicle, and a correction value estimation unit that calculates a correction value to correct an output the bounce motion estimation unit. The correction value estimation unit calculates the correction value in consideration of a non-linear characteristic of the suspension.

公开(公告)号：US20190263210A1

公开(公告)日：2019-08-29

申请号：US16348468

申请日：2017-11-22

申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

发明人： Shingo NASU ,  Junya TAKAHASHI ,  Nobuyuki ICHIMARU ,  Ryusuke HIRAO

IPC分类号： B60G17/018 ,  G07C5/08

摘要： An object of the present invention is to provide a vehicle motion state estimation device capable of estimating a vertical momentum of a vehicle with high accuracy from a wheel speed sensor signal during traveling such as acceleration or deceleration, turning, or the like where wheel slips in longitudinal and lateral directions occur. The present invention estimates and removes a variation component caused by a wheel slip from variation components of a wheel speed sensor signal to extract a variation component caused by a displacement of a suspension, and estimates a vertical momentum of a vehicle from the extracted variation component caused by the displacement of the suspension.