公开(公告)号：US12187402B2

公开(公告)日：2025-01-07

申请号：US17665721

申请日：2022-02-07

Applicant: Hitachi Astemo, Ltd.

Inventor： Kenichi Kirihara ,  Norio Kikuchi ,  Yusuke Amma ,  Kyohei Fukushi ,  Akihiro Kogure

IPC: B63H25/42 ,  B63H25/24

Abstract: A ship steering device includes a handle which is mechanically separated from a rudder mechanism, a steering angle detecting unit that detects a steering angle of the handle, a rudder motor that drives the rudder mechanism, and a turn controller that controls, based on a steering characteristics map which associates a basic relation between the steering angle and a turn angle, the rudder motor so as to obtain the turn angle in accordance with the steering angle. The steering characteristics map has a characteristic such that, in a second steering region where the steering angle is larger than the steering angle in a first steering region, a change amount of the turn angle relative to the steering angle is large with respect to the first steering region where the steering angle is set from zero in advance.

公开(公告)号：US20220306264A1

公开(公告)日：2022-09-29

申请号：US17665715

申请日：2022-02-07

Applicant: Hitachi Astemo, Ltd.

Inventor： Kenichi Kirihara ,  Norio Kikuchi ,  Yusuke Amma ,  Kyohei Fukushi ,  Akihiro Kogure

IPC: B63H25/42 ,  B63H25/24

Abstract: A ship steering device includes a handle which is mechanically separated from a rudder mechanism, a steering angle detecting unit that detects a steering angle of the handle, a reaction force motor that generates reaction force torque to be applied to the handle, and a reaction force controller that controls, based on a steering characteristics map, the reaction force motor in such a way that the reaction force torque in accordance with the steering angle is obtained. The steering characteristics map has characteristics in such a way that the amount of change in an aiming steering torque relative to the steering angle is smaller in a second steering range where the steering angle is larger than that in a first steering range than the first steering region where the steering angle is set in advance from zero.

公开(公告)号：US12227280B2

公开(公告)日：2025-02-18

申请号：US17665715

申请日：2022-02-07

Applicant: Hitachi Astemo, Ltd.

Inventor： Kenichi Kirihara ,  Norio Kikuchi ,  Yusuke Amma ,  Kyohei Fukushi ,  Akihiro Kogure

IPC: B63H25/42 ,  B63H25/24

Abstract: A ship steering device includes a handle which is mechanically separated from a rudder mechanism, a steering angle detecting unit that detects a steering angle of the handle, a reaction force motor that generates reaction force torque to be applied to the handle, and a reaction force controller that controls, based on a steering characteristics map, the reaction force motor in such a way that the reaction force torque in accordance with the steering angle is obtained. The steering characteristics map has characteristics in such a way that the amount of change in an aiming steering torque relative to the steering angle is smaller in a second steering range where the steering angle is larger than that in a first steering range than the first steering region where the steering angle is set in advance from zero.

公开(公告)号：US20220315194A1

公开(公告)日：2022-10-06

申请号：US17665721

申请日：2022-02-07

Applicant: Hitachi Astemo, Ltd.

Inventor： Kenichi Kirihara ,  Norio Kikuchi ,  Yusuke Amma ,  Kyohei Fukushi ,  Akihiro Kogure

IPC: B63H25/42 ,  B63H25/24

Abstract: A ship steering device includes a handle which is mechanically separated from a rudder mechanism, a steering angle detecting unit that detects a steering angle of the handle, a rudder motor that drives the rudder mechanism, and a turn controller that controls, based on a steering characteristics map which associates a basic relation between the steering angle and a turn angle, the rudder motor so as to obtain the turn angle in accordance with the steering angle. The steering characteristics map has a characteristic such that, in a second steering region where the steering angle is larger than the steering angle in a first steering region, a change amount of the turn angle relative to the steering angle is large with respect to the first steering region where the steering angle is set from zero in advance.