公开(公告)号：US07533757B2

公开(公告)日：2009-05-19

申请号：US11265606

申请日：2005-11-02

申请人： Nobuo Sugitani ,  Yoshimitsu Akuta ,  Hisao Asaumi ,  Hitoshi Iwai ,  Masaaki Kawano ,  Takashi Nishimori

发明人： Nobuo Sugitani ,  Yoshimitsu Akuta ,  Hisao Asaumi ,  Hitoshi Iwai ,  Masaaki Kawano ,  Takashi Nishimori

IPC分类号： B62D5/04

CPC分类号： B62D5/003 ,  B62D5/006 ,  B62D5/0496

摘要： A steering system includes a steering wheel, a steering angle sensor detecting a steering angle, a steering motor steering road-wheels, a reaction motor imparting a reaction force to the steering wheel, an ECU driving the steering motor with respect to a detected steering angle and a temperature detecting unit detecting temperatures of the steering motor, the reaction motor or a constituent member involved in the temperatures of the motors. When the temperature detected is larger than a predetermined value, the ECU performs such that a ratio of the rotating angle to the steering angle is made smaller than one that is to result when the temperature is equal to or smaller than the predetermined value, or a reaction force that is to be imparted to the steering wheel is made larger.

摘要翻译： 转向系统包括方向盘，检测转向角的转向角传感器，转向马达转向路面轮，向方向盘施加反作用力的反作用马达，相对于检测到的转向角度驱动转向马达的ECU 以及温度检测单元，其检测所述转向马达，所述反作用马达或与所述马达的温度有关的构成部件的温度。 当检测到的温度大于预定值时，ECU执行使得旋转角度与转向角度的比率小于当温度等于或小于预定值时产生的旋转角度的比率，或者 使赋予方向盘的反作用力变大。

公开(公告)号：US5370199A

公开(公告)日：1994-12-06

申请号：US44066

申请日：1993-04-06

申请人： Yoshimitsu Akuta ,  Tooru Ikeda ,  Takashi Nishihara

发明人： Yoshimitsu Akuta ,  Tooru Ikeda ,  Takashi Nishihara

IPC分类号： F02D29/02 ,  B60K28/14 ,  B60K28/16

CPC分类号： B60K28/14 ,  B60K28/16

摘要： In a traction control system for a vehicle which controls the traction of the driven wheels according to the slip ratio of the driven wheels obtained as a relationship between the vehicle speed and the speed of the driven wheels, the vehicle speed is obtained from the speed of the non-driven wheels. Normally, the average value of the speeds of the non-driven wheels is used as the basis for computing the vehicle speed, but when one of the non-driven wheels is likely to be lifted from the road surface due to the turning maneuver of the vehicle, the speed of one of the non-driven wheels which is higher than that of the other non-driven wheel and is therefore likely to be in contact with the road surface is used for fining the vehicle speed. Thus, the vehicle speed is simply obtained from the speed of the non-driven wheels, but the traction control can be reliably carried out according to a correctly obtained vehicle speed.

摘要翻译： 在车辆的牵引力控制系统中，根据作为车速与从动轮的速度之间的关系获得的从动轮的滑移率来控制从动轮的牵引力，车速是从车速 非驱动轮。 通常，非驱动轮的速度的平均值被用作计算车速的基础，但是当其中一个非从动轮很可能由于转向机动而从路面抬起时 使用比其他非从动轮高的非从动轮之一的速度，因此很可能与路面接触的速度用于使车辆的速度细化。 因此，从非从动轮的速度简单地获得车速，但是可以根据正确获得的车速可靠地进行牵引力控制。

公开(公告)号：US5136507A

公开(公告)日：1992-08-04

申请号：US531725

申请日：1990-06-01

申请人： Shuji Shiraishi ,  Osamu Yamamoto ,  Mitsuya Serizawa ,  Makoto Sato ,  Keiyu Kin ,  Hiromi Inagaki ,  Wataru Saito ,  Yoshimitsu Akuta

发明人： Shuji Shiraishi ,  Osamu Yamamoto ,  Mitsuya Serizawa ,  Makoto Sato ,  Keiyu Kin ,  Hiromi Inagaki ,  Wataru Saito ,  Yoshimitsu Akuta

IPC分类号： B60T8/1755 ,  B62D6/04

CPC分类号： B62D6/04 ,  B60T8/1755

摘要： A system for correctively controlling the turning movement of a vehicle, including a device for correcting the turning movement of the vehicle, a sensor for detecting the steering angle of a steering wheel of the vehicle, a steering angle hysteresis storage device for storing the hysteresis of the steering angle, and a reference value arithmetic device for determining a reference value of a physical quantity generated during a turning movement of the vehicle, on the basis of the hysteresis of the steering angle. The system also includes a detector for detecting an actual value of the physical quantity during the turning movement, a calculator for determining a deviation between the reference value and actual value of the physical quantity and a polarity of the deviation, and a control-quantity determining device for determining a control-quantity for the turning movement correcting device on the basis of the deviation obtained in the calculator. A device is included for determining a control-direction of correction of the turning movement on the basis of the polarity of the deviation. This system permits the turning movement of the vehicle to be automatically corrected.

摘要翻译： 一种用于校正车辆的转动运动的系统，包括用于校正车辆的转动运动的装置，用于检测车辆的方向盘的转向角的传感器，用于存储车辆的方向盘的转向角的转向角滞后存储装置， 转向角以及用于根据转向角的滞后来确定在车辆转弯运动期间产生的物理量的基准值的基准值运算装置。 该系统还包括用于检测转弯运动期间物理量的实际值的检测器，用于确定参考值与物理量的实际值和偏差的极性之间的偏差的计算器，以及控制量确定 根据在计算器中得到的偏差确定转动运动校正装置的控制量的装置。 包括用于基于偏差的极性确定转动运动的校正的控制方向的装置。 该系统允许车辆的转动运动被自动校正。

公开(公告)号：US08775025B2

公开(公告)日：2014-07-08

申请号：US12551993

申请日：2009-09-01

申请人： Takuya Yamaguchi ,  Yoshimitsu Akuta

发明人： Takuya Yamaguchi ,  Yoshimitsu Akuta

IPC分类号： B62D6/00

CPC分类号： B62D5/008 ,  B62D5/046 ,  B62D6/002

摘要： An object of the present invention is to provide a steering system which does not cause the driver to feel the steering reactive force shock when the operation of the steering wheel is stopped, and which enables the driver to operate the steering wheel comfortably. In order to achieve the above object, there is provided a steering system in which a transfer ratio of a steering angle of a steering wheel to a turning angle of a turning wheel is changed by a variable transfer ratio mechanism, and an auxiliary power is generated during steering by an electric power steering, including: a transfer ratio variable motor for changing the transfer ratio, in which a steering angular velocity of the steering wheel is calculated, and when an absolute value of the steering angular velocity becomes equal to or less than a predetermined value, a current value flowing through the transfer ratio variable motor is set to zero.

摘要翻译： 本发明的目的是提供一种转向系统，该方法在停止方向盘的操作时不会使驾驶员感觉到转向反作用力冲击，并且能够使驾驶员舒适地操作方向盘。 为了实现上述目的，提供了一种转向系统，其中方向盘的转向角与转向车轮的转向角的转移比率通过可变转速比机构而改变，并且产生辅助动力 在通过电动助力转向进行转向时，包括：转移比可变电动机，其用于改变所述转向比，其中计算所述方向盘的转向角速度，并且当所述转向角速度的绝对值变为等于或小于 流过传递比可变电动机的电流值被设定为零。

公开(公告)号：US07832522B2

公开(公告)日：2010-11-16

申请号：US11939442

申请日：2007-11-13

申请人： Yoshimitsu Akuta ,  Takuya Yamaguchi

发明人： Yoshimitsu Akuta ,  Takuya Yamaguchi

IPC分类号： B62D3/00

CPC分类号： B62D6/002

摘要： A vehicle steering system includes a steering wheel, a steering angle detector that detects a steering angle of the steering wheel, a steering angular speed calculator that calculates a steering angular speed of the steering wheel, a vehicle speed detector that detects a vehicle speed, a target rudder angle finding device, a modifying device, and an actuator. The target rudder angle finding device finds a target rudder angle based on the steering angle, the steering angular speed and the vehicle speed. The target rudder angle is a sum of a proportional term proportional to the steering angle and a differential term proportional to the steering angular speed. The modifying device modifies the differential term when the steering angular speed is negative to reduce a value of the differential term from that when positive. The actuator turns at least one wheel of the vehicle in accordance with the target rudder angle.

摘要翻译： 车辆转向系统包括方向盘，检测方向盘的转向角的转向角检测器，计算方向盘的转向角速度的转向角速度计算器，检测车速的车速检测器， 目标舵角查找装置，修改装置和致动器。 目标舵角查找装置基于转向角，转向角速度和车速找到目标舵角。 目标舵角是与转向角成比例的比例项和与转向角速度成正比的微分项的和。 当转向角速度为负时，修正装置修改微分项，以将微分项的值从正值减小。 执行器根据目标舵角度转动车辆的至少一个车轮。

公开(公告)号：US20090248248A1

公开(公告)日：2009-10-01

申请号：US12411807

申请日：2009-03-26

申请人： Yoshimitsu Akuta ,  Masaaki Minakawa

发明人： Yoshimitsu Akuta ,  Masaaki Minakawa

IPC分类号： B62D6/00

CPC分类号： B62D7/159 ,  B60G2400/0521 ,  B60G2400/0523 ,  B60W2520/125 ,  B60W2520/14 ,  B62D6/002 ,  B62D6/003

摘要： In a steer-by-wire steering control device for a vehicle using a model following control based on yaw rate or lateral acceleration, the target steering angle(s) of front wheels and/or rear wheels (Sfbs, Srbs) are corrected according a roll rate (Rre) of the vehicle which may be either detected or estimated from a lateral acceleration or yaw rate. Thereby, the roll rate gain can be reduced, and the damping property and response property of the yaw rate can be improved.

摘要翻译： 在使用基于偏航率或横向加速度的模型跟随控制的车辆的线控转向控制装置中，前轮和/或后轮（Sfbs，Srbs）的目标转向角（sfbs，Srbs）根据 可以从侧向加速度或偏航率检测或估计车辆的滚动速率（Rre）。 由此，能够降低侧倾率增益，能够提高横摆率的阻尼特性和响应特性。

公开(公告)号：US20080185212A1

公开(公告)日：2008-08-07

申请号：US11939442

申请日：2007-11-13

申请人： Yoshimitsu Akuta ,  Takuya Yamaguchi

发明人： Yoshimitsu Akuta ,  Takuya Yamaguchi

IPC分类号： B62D3/00

CPC分类号： B62D6/002

摘要： A vehicle steering system includes a steering wheel, a steering angle detector that detects a steering angle of the steering wheel, a steering angular speed calculator that calculates a steering angular speed of the steering wheel, a vehicle speed detector that detects a vehicle speed, a target rudder angle finding device, a modifying device, and an actuator. The target rudder angle finding device finds a target rudder angle based on the steering angle, the steering angular speed and the vehicle speed. The target rudder angle is a sum of a proportional term proportional to the steering angle and a differential term proportional to the steering angular speed. The modifying device modifies the differential term when the steering angular speed is negative to reduce a value of the differential term from that when positive. The actuator turns at least one wheel of the vehicle in accordance with the target rudder angle.

摘要翻译： 车辆转向系统包括方向盘，检测方向盘的转向角的转向角检测器，计算方向盘的转向角速度的转向角速度计算器，检测车速的车速检测器， 目标舵角查找装置，修改装置和致动器。 目标舵角查找装置基于转向角，转向角速度和车速找到目标舵角。 目标舵角是与转向角成比例的比例项和与转向角速度成正比的微分项的和。 当转向角速度为负时，修正装置修改微分项，以将微分项的值从正值减小。 执行器根据目标舵角度转动车辆的至少一个车轮。

公开(公告)号：US20070210539A1

公开(公告)日：2007-09-13

申请号：US11649216

申请日：2007-01-04

申请人： Takehiko Hakui ,  Hajime Hirata ,  Hajime Kajiwara ,  Kiyoshi Nakajima ,  Yoshimitsu Akuta ,  Kunimichi Hatano

发明人： Takehiko Hakui ,  Hajime Hirata ,  Hajime Kajiwara ,  Kiyoshi Nakajima ,  Yoshimitsu Akuta ,  Kunimichi Hatano

IPC分类号： B60G17/052 ,  B60G17/00 ,  B60G15/00

CPC分类号： B60G17/02 ,  B60G15/063 ,  B60G15/068 ,  B60G17/021 ,  B60G17/052 ,  B60G2202/12 ,  B60G2204/1242 ,  B60G2204/128 ,  B60G2500/20 ,  B60G2500/30 ,  Y10T74/18576

摘要： A first rotor (24; 124) and a second rotor (25; 125) are arranged in a coaxial and mutually rotatable relationship and are provided with a first driven gear (41; 141) and a second driven gear (42; 142), respectively. A drive shaft (31; 131) is also provided with a first drive gear (43; 143) and a second drive gear (44; 144) which are commonly connected to an output shaft of an electric motor (32; 132), and mesh with the first and second driven gears, respectively, at slightly different gear ratios. The first and second rotors are connected via a thread feed mechanism (36; 136) that converts a relative rotation between the first and second rotors into an axial linear movement between the first and second rotors that is used for changing a distance between a vehicle body part and a corresponding end of a suspension spring in a vehicle height adjusting system (9; 109). Owing to a differential rotation of a high gear ratio between the first and second rotors, a significant torque amplification is possible with a compact arrangement. The use of spur gears instead of a worm gear mechanism minimizes torque loss.

摘要翻译： 第一转子（24; 124）和第二转子（25; 125）以同轴且相互旋转的关系布置，并且设置有第一从动齿轮（41; 141）和第二从动齿轮（42; 142） 分别。 驱动轴（31; 131）还设置有共同连接到电动机（32; 132）的输出轴的第一驱动齿轮（43; 143）和第二驱动齿轮（44; 144），以及 分别与第一和第二从动齿轮啮合，齿轮比略微不同。 第一和第二转子通过螺纹供给机构（36; 136）连接，该螺纹供给机构将第一和第二转子之间的相对旋转转换成在第一和第二转子之间的轴向线性运动，用于改变车体 在车辆高度调节系统（9; 109）中的悬架弹簧的部分和相应的端部。 由于第一和第二转子之间的高齿轮比的差速旋转，紧凑的布置可以实现显着的扭矩放大。 使用正齿轮而不是蜗轮传动机构使扭矩损失最小化。

公开(公告)号：US06585074B2

公开(公告)日：2003-07-01

申请号：US09998472

申请日：2001-11-29

申请人： Takafumi Katou ,  Yoshimitsu Akuta ,  Kazuo Matsuura ,  Keiichi Takikawa

发明人： Takafumi Katou ,  Yoshimitsu Akuta ,  Kazuo Matsuura ,  Keiichi Takikawa

IPC分类号： B62D506

CPC分类号： B62D6/00 ,  B62D3/12 ,  Y10T74/1967

摘要： A vehicle steering system includes a rack and pinion mechanism having a pinion functionally coupled to a steering wheel and a rack meshing with the pinion and functionally coupled to steerable wheels and a mechanism for displacing the rack in the axial direction thereof to steer the steerable wheels independently of steering operation initiated by the steering wheel. The rack and pinion mechanism comprises a variable gear ratio rack and pinion mechanism having a variable gear ratio, which is the lowest when the steering wheel is in a neutral position and becomes higher as the steering angle of the steering wheel becomes large.

公开(公告)号：US5172319A

公开(公告)日：1992-12-15

申请号：US611570

申请日：1990-11-13

申请人： Shuji Shiraishi ,  Osamo Yamamoto ,  Takashi Nishihara ,  Yoshimitsu Akuta

发明人： Shuji Shiraishi ,  Osamo Yamamoto ,  Takashi Nishihara ,  Yoshimitsu Akuta

IPC分类号： B60K28/16

CPC分类号： B60K28/16

摘要： In a control system wherein slippage of a vehicle drive wheel is detected and when the slip is excessively large, an engine output or drive wheel torque is reduced, there are provided means for calculating the grip force of the drive wheel and further means for changing the reduction amount of engine output or drive wheel torque, or the reduction speed, or the reduction characteristic dependent on a signal from the grip force calculating means. This enables a sporty travel of a vehicle.

摘要翻译： 在检测到车辆驱动轮的滑动的控制系统中，当滑差过大时，发动机输出或驱动轮转矩减小，提供了用于计算驱动轮的夹紧力的装置， 发动机输出的减少量或驱动轮扭矩或减速速度，或依赖于来自抓地力计算装置的信号的减速特性。 这使得车辆的运动性旅行成为可能。