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    • 1. 发明授权
    • Method and device for controlling maneuverability of vehicle
    • 控制车辆机动性的方法和装置
    • US07055645B2
    • 2006-06-06
    • US10507374
    • 2003-04-21
    • Hiroaki KatoMinekazu MomiyamaYoshiyuki YasuiWataru TanakaKenji AsanoYuzou ImotoEiichi OnoYuji Muragishi
    • Hiroaki KatoMinekazu MomiyamaYoshiyuki YasuiWataru TanakaKenji AsanoYuzou ImotoEiichi OnoYuji Muragishi
    • B62D5/04
    • B62D15/0235B62D5/008
    • In accordance with a vehicle motion control apparatus, a steering angle (θh) of a steering wheel is determined on the basis of a rotation angle (θpm) of an assist motor (24m) detected by a rotation angle sensor (24s) and a rotation angle (θvm) of a gear ratio variable motor (32m) detected by a rotation angle sensor (32s), and a VGRS control process (40a) of a gear ratio variable mechanism is executed on the basis of the determined steering angle (θh). Accordingly, since the steering angle (θh) of the steering wheel is determined on the basis of the rotation angle (θvm) used for the VGRS control process (40a) of the gear ratio variable mechanism and the rotation angle (θpm) used for an EPS control process (30a) of an EPS actuator, it is possible to obtain the steering angle (θh) of the steering wheel without a steering angle sensor. Therefore, it is possible to reduce the number of the parts of a vehicle motion control apparatus.
    • 根据车辆运动控制装置,基于由旋转角度传感器(24s)检测到的辅助马达(24m)的旋转角度(ttm)来确定方向盘的转向角(thetah),并且 通过旋转角度传感器(32s)检测到的齿轮比可变马达(32m)的旋转角(tavm)和齿轮比可变机构的VGRS控制处理(40a),基于所确定的 转向角(thetah)。 因此,由于根据用于变速比可变机构的VGRS控制处理(40a)的旋转角(tavm)和用于变速比可变机构的旋转角度(ttm)来确定方向盘的转向角(thetah) EPS致动器的EPS控制过程(30a),可以获得没有转向角传感器的方向盘的转向角(thetah)。 因此,可以减少车辆运动控制装置的部件的数量。
    • 2. 发明申请
    • Steering device
    • 转向装置
    • US20050216155A1
    • 2005-09-29
    • US10514846
    • 2003-05-26
    • Hiroaki KatoMinekazu MomiyamaShoji OgawaKenji AsanoYuzou ImotoYoshiyuki YasuiWataru TanakaEiichi OnoYuji Muragishi
    • Hiroaki KatoMinekazu MomiyamaShoji OgawaKenji AsanoYuzou ImotoYoshiyuki YasuiWataru TanakaEiichi OnoYuji Muragishi
    • B62D5/00B62D5/04B62D6/00B62D101/00B62D113/00B62D119/00B62D137/00G05D1/00
    • B62D5/008B62D6/006
    • In accordance with a steering apparatus (20), a grip state between a ground surface on which a steered wheel is grounded and the steered wheel is estimated by a grip degree estimation arithmetically operating process (30a) which is arithmetically operated by AFS_ECU (30), and VGRS target angle is set such that a steering gear ratio is increased in the case that the grip degree gets close to a grip limit on the basis of an estimated grip state, in accordance with a grip degree vs gear ratio map (30b). Accordingly, since it is possible to estimate the grip degree which is changed in correspondence to a magnitude of the road surface it, for example, in the case that the steered wheel gets close to the grip limit, it is possible to increase the steering gear ratio so as to set large even at a time when the vehicle runs at the low speed. Therefore, since it is possible to prevent a phenomenon that the steered wheel is largely controlled by a smaller steering angle from being generated in the case that the vehicle runs on the road surface having the low μ, there is obtained an effect that a stability in the vehicle motion can be improved.
    • 根据转向装置(20),通过由AFS_ECU(30)算术运算的夹紧度估计算术运算处理(30a)来估计在转向轮接地的地面和转向轮之间的抓地状态 ),并且VGRS目标角度被设定为使得在抓地度基于估计的抓地状态接近到抓地限度的情况下,根据握力与齿轮比图(30 b)。 因此,由于可以估计与路面的大小相对应地改变的夹紧度,例如在转向轮接近抓地力极限的情况下,可以增加舵机 即使在车辆低速行驶时也能够设定为大。 因此,由于可以防止在车辆在具有低mu的路面上行驶的情况下由于较小的转向角而导致转向轮受到较大程度的控制的现象,所以获得了在 可以改善车辆运动。
    • 4. 发明授权
    • Steering device
    • 转向装置
    • US07260458B2
    • 2007-08-21
    • US10515178
    • 2003-05-26
    • Hiroaki KatoMinekazu MomiyamaShoji OgawaKenji AsanoYuzou ImotoYoshiyuki YasuiWataru TanakaEiichi OnoYuji Muragishi
    • Hiroaki KatoMinekazu MomiyamaShoji OgawaKenji AsanoYuzou ImotoYoshiyuki YasuiWataru TanakaEiichi OnoYuji Muragishi
    • G01N19/02B60T8/76
    • B62D6/008B62D6/006B62D15/029
    • In a steering apparatus, in accordance with a grip limit control process (30b′), it is determined whether or not a grip degree ε estimated by a grip degree estimation arithmetically operating process (30a) is less than a predetermined grip degree (ε′), and in the case that it is determined that an estimated grip degree (ε) is less than the predetermined grip degree (ε′), the process applies such a feeling that a steering operation by a steering wheel suddenly becomes light to a driver, by suddenly increasing an assist quantity by a motor (M), thereby notifying the driver of the matter that the grip degree of a steered wheel is close to a limit. Therefore, it is possible to transmit to the driver a probability that a side slip is generated by further turning the steering wheel 21 in the same direction as the current direction, thereby calling the driver's attention for steering. Accordingly, there is an effect that a stability of a vehicle behavior can be improved without applying any fear of insecurity to the driver.
    • 在转向装置中,根据握持限制控制处理(30b'),判定通过握持度估计算术运算处理(30a)估计出的抓地力程度ε是否小于预定抓地力( epsilon'),并且在确定估计抓地力(ε)小于预定抓地力(epsilon))的情况下,该处理应用这样的感觉,即方向盘的转向操作突然变亮 驾驶员通过马达(M)突然增加辅助量,从而通知驾驶员转向轮的夹紧度接近极限。 因此,通过使方向盘21与当前方向相同的方向进一步转动方向盘21,可以向驾驶员发送侧滑的概率,从而呼叫司机注意转向。 因此,存在可以提高车辆行为的稳定性的效果,而不会对驾驶员造成不安全感的担心。