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1. 发明授权

US5341294A Four-wheel steering system for vehicle 失效
标题翻译：车辆四轮转向系统
公开(公告)号：US5341294A
公开(公告)日：1994-08-23
申请号：US748838
申请日：1991-08-23
申请人： Hirotaka Kanazawa , Takeshi Edahiro , Hiroki Yoshioka , Nobuhiro Totoki , Hiroyuki Noda , Takashi Nakashima , Hiroshi Ohmura , Takeshi Murai , Ryuya Akita
发明人： Hirotaka Kanazawa , Takeshi Edahiro , Hiroki Yoshioka , Nobuhiro Totoki , Hiroyuki Noda , Takashi Nakashima , Hiroshi Ohmura , Takeshi Murai , Ryuya Akita
IPC分类号： B62D7/15 , B62D5/06 , B62D6/02
CPC分类号： B62D7/1545 , B62D7/1518 , B62D7/159
摘要： In a four wheel steering system, the rear wheel turning mechanism is connected to the front wheel turning mechanism by way of a rear wheel turning angle ratio changing mechanism which is mechanically connected to both the front wheel turning mechanism and the rear wheel turning mechanism and transmits the mechanical displacement input thereinto from the front wheel turning mechanism to the rear wheel turning mechanism to drive the same by an amount the ratio of which to the amount of mechanical displacement input into the rear wheel turning angle ratio changing mechanism gives a predetermined rear wheel turning angle ratio. The rear wheel turning angle ratio changing mechanism is controlled in such a way that, when the front wheels are turned from the neutral position in a middle vehicle speed range, makes the rear wheel turning angle ratio negative for a moment immediately after initiation of turning of the front wheels and thereafter turns the same positive.
摘要翻译：在四轮转向系统中，后轮转向机构通过与后轮转向机构和后轮转动机构机械连接的后轮转角变更机构与前轮转向机构连接，从前轮转向机构到后轮转向机构的机械位移输入，以将其相对于输入到后轮转向角比变更机构的机械位移量的比例驱动到后轮转向机构，角度比。控制后轮转向角变更机构，使得当前轮在中间车速范围内从中立位置转动时，使后轮转向角比率在开始转动之后立刻为负前轮然后转动相同的正面。

2. 发明授权

US5201382A Four-wheel-steered vehicle control system 失效
标题翻译：四轮转向车辆控制系统
公开(公告)号：US5201382A
公开(公告)日：1993-04-13
申请号：US677528
申请日：1991-03-29
申请人： Takeshi Edahiro , Ryuya Akita , Hiroshi Ohmura , Takashi Nakashima , Takeshi Murai
发明人： Takeshi Edahiro , Ryuya Akita , Hiroshi Ohmura , Takashi Nakashima , Takeshi Murai
IPC分类号： B62D6/00 , B60K28/16 , B60T8/175 , B60T8/1769 , B62D7/14 , B62D7/15 , B62D101/00 , B62D103/00 , B62D105/00 , B62D109/00 , F02D29/02
CPC分类号： B62D7/148 , B60K28/16 , B60T8/175 , B60T8/1769 , B62D7/159 , B60T2260/022
摘要： A front drive vehicle is provided with a four-wheel steering system and a traction control system. A control system for the vehicle detects whether a failure occurs in the traction control system, and causes the rear wheel turning mechanism to turn the rear wheels according to corrected rear wheel turning characteristics when it is determined that a failure occurs in the traction control system. The corrected rear wheel turning characteristics are shifted toward the reverse phase side with respect to the original rear wheel turning characteristics.
摘要翻译：前驱车辆设有四轮转向系统和牵引力控制系统。用于车辆的控制系统检测在牵引力控制系统中是否发生故障，并且当确定在牵引力控制系统中发生故障时，使后轮转向机构根据校正的后轮转向特性转动后轮。校正后轮转向特性相对于原始后轮转向特性向相反侧移动。

3. 发明授权

US5225983A Rear wheel steering system for motor vehicle 失效
标题翻译：汽车后轮转向系统
公开(公告)号：US5225983A
公开(公告)日：1993-07-06
申请号：US631924
申请日：1990-12-20
申请人： Hiroshi Ohmura , Takashi Nakashima , Takeshi Edahiro , Fumio Kageyama , Atuo Tomoda , Haruki Okazaki , Ryuya Akita , Takeshi Murai
发明人： Hiroshi Ohmura , Takashi Nakashima , Takeshi Edahiro , Fumio Kageyama , Atuo Tomoda , Haruki Okazaki , Ryuya Akita , Takeshi Murai
IPC分类号： B60T8/1755 , B60T8/42 , B62D7/15
CPC分类号： B62D7/159 , B60T8/1755 , B60T8/4291 , B60T2260/022 , B60T2260/024 , B60T2270/304
摘要： A rear steering control system for a motor vehicle includes an antiskid braking system which controls a braking force in a brake device in a respective wheel in accordance with a deceleration condition of the respective wheel so as to prevent wheel locking in a braking operation. The sytem includes a rear steering control system for establishing a ratio of steering amount of the rear wheels to that of the front wheels as a predetermined steering ratio characteristic. An input device inputs an operation condition of the antiskid braking system and an control condition of the brake device for the respective wheel conducted by the antiskid braking system to the rear steering control system. A device is provided in the system for amending the predetermined steering ratio characteristic in accordance with the control condition of the brake device for the respective wheel when the antiskid braking system is in operation.
摘要翻译：用于机动车辆的后转向控制系统包括防滑制动系统，其根据相应车轮的减速条件控制各轮中的制动装置中的制动力，以防止制动操作中的车轮锁定。该系统包括用于确定后轮的转向量与前轮的转向量的比率的后转向控制系统作为预定的转向比特性。一个输入装置输入防滑制动系统的操作状态以及由防滑制动系统传导到各个车轮的制动装置的控制状态到后转向控制系统。在防滑制动系统运行时，根据制动装置的控制条件，在系统中设置有用于修正预定转向比特性的装置。

4. 发明授权

US5141071A Four-wheel-steered vehicle control system 失效
标题翻译：四轮转向车辆控制系统
公开(公告)号：US5141071A
公开(公告)日：1992-08-25
申请号：US668241
申请日：1991-03-12
申请人： Takeshi Edahiro , Ryuya Akita , Hiroshi Ohmura , Takashi Nakashima , Takeshi Murai , Fumio Kageyama
发明人： Takeshi Edahiro , Ryuya Akita , Hiroshi Ohmura , Takashi Nakashima , Takeshi Murai , Fumio Kageyama
IPC分类号： B60K28/16 , B62D7/15
CPC分类号： B60K28/16 , B62D7/159 , B60T2260/022
摘要： A four-wheel-steered vehicle provided with a slip control mechanism which has a slip ratio sensor for detecting the slip ratio of the wheels and controls slip of wheels of the vehicle when the slip ratio of the wheels reaches a first preset value. The four-wheel steering mechanism turns the rear wheels according to first rear wheel turning characteristics in response to turning of the front wheels when the slip ratio of the wheels is smaller than a second preset value which is smaller than the first preset value and turns the rear wheels according to second rear wheel turning characteristics when the slip ratio reaches the second preset value.
摘要翻译：具有滑动控制机构的四轮转向车辆，其具有用于检测车轮的滑移比的滑移率传感器，并且当车轮的滑移比达到第一预设值时，控制车辆的车轮滑动。当轮的滑移比小于第一预设值的第二预置值时，四轮转向机构响应于前轮的转动而根据第一后轮转向特性来转动后轮，当滑移比达到第二预设值时，根据第二后轮转向特性的后轮。

5. 发明授权

US5303791A Rear wheel steering device for a vehicle 失效
标题翻译：车辆后轮转向装置
公开(公告)号：US5303791A
公开(公告)日：1994-04-19
申请号：US769196
申请日：1991-09-30
申请人： Hiroyuki Hayashi , Toshiro Kondo , Fumitaka Ando , Hirotaka Kanazawa , Takeshi Edahiro , Ryuya Akita
发明人： Hiroyuki Hayashi , Toshiro Kondo , Fumitaka Ando , Hirotaka Kanazawa , Takeshi Edahiro , Ryuya Akita
IPC分类号： B62D7/15 , B62D5/04
CPC分类号： B62D7/1581 , B62D7/159
摘要： Two support members which are supported swingably to the vehicle body through the medium of the support axis extending in up and down direction are provided at the vehicle body end portions of two left and right suspension arm members connecting left and right rear wheels to the vehicle body. Lever parts are extended from the support members toward the opposing direction to each other and are interconnected by a link member. One of the two support members is driven by one actuator for rotation around an support axis, whereby left and right two suspension arm members move in vehicle widthwise direction, opposite to each other, and in synchronism with each other and thus left and right rear wheels are steered symmetrically in toe-in direction or toe-out direction. Since the motive power mechanism part is of simple construction using link members, and engaging parts of gears can be lessened, the device according to the present invention can contribute to compactness and cost reduction and also can restrict "shaking" in rear wheel steering due to backlash of gears.
摘要翻译：通过沿着上下方向延伸的支撑轴的介质可摆动地支撑在车体上的两个支撑构件设置在将左右后轮连接到车体的两个左右悬架臂构件的车身端部。杠杆部件从支撑构件朝向彼此相反的方向延伸并且通过连杆构件相互连接。两个支撑构件中的一个由一个致动器驱动以围绕支撑轴线旋转，由此左和右两个悬架臂构件在车辆宽度方向上彼此相反地移动，并且彼此同步，因此左右后轮对称地沿着方向或脚趾向方向转向。由于动力机构部分使用连杆构件的结构简单，并且可以减小齿轮的接合部分，所以根据本发明的装置可以有助于紧凑性和成本降低，并且还可以限制由于后轮转向而产生的“晃动” 齿轮间隙

6. 发明授权

US5521823A Learning control vehicle 失效
标题翻译：学习控制车
公开(公告)号：US5521823A
公开(公告)日：1996-05-28
申请号：US357266
申请日：1994-12-13
申请人： Ryuya Akita , Shin Takehara , Hiroshi Ohmura , Kiyoshi Sakamoto , Mineharu Shibata , Shigefumi Hirabayashi , Seiji Miyamoto
发明人： Ryuya Akita , Shin Takehara , Hiroshi Ohmura , Kiyoshi Sakamoto , Mineharu Shibata , Shigefumi Hirabayashi , Seiji Miyamoto
IPC分类号： B60G17/0195 , B60T8/174 , B60W10/10 , B60W40/09 , G06F15/18 , B60K41/00
CPC分类号： B60W50/0098 , B60G17/0195 , B60T8/174 , B60W10/06 , B60W10/10 , B60W10/20 , B60W10/22 , G06N99/005 , B60T2220/02 , B60W2050/0089 , B60W2050/0095 , B60W2520/105 , B60W2520/14 , B60W2540/28 , B60W2540/30 , B60W2550/402 , B60W40/09
摘要： A vehicle having learning control includes a running condition detecting device for detecting a driving condition of the vehicle, a running characteristic control device for controlling a control gain to change a running characteristic of the vehicle and a gain control device for learning the running characteristic of the vehicle to change the control gain. The running characteristics of the vehicle can be controlled corresponding to various running conditions.
摘要翻译：具有学习控制的车辆包括：用于检测车辆的行驶状况的行驶状况检测装置;控制用于改变车辆行驶特性的控制增益的行驶特性控制装置;以及用于学习车辆行驶特性的增益控制装置车辆改变控制增益。可以根据各种运行条件来控制车辆的行驶特性。

7. 发明授权

US5248009A Vehicle rear wheels steering apparatus 失效
标题翻译：车辆后轮转向装置
公开(公告)号：US5248009A
公开(公告)日：1993-09-28
申请号：US755337
申请日：1991-09-05
申请人： Shin Takehara , Hiroshi Ohmura , Ryuya Akita , Isamu Chikuma , Hiroyuki Ito , Hiroshi Eda
发明人： Shin Takehara , Hiroshi Ohmura , Ryuya Akita , Isamu Chikuma , Hiroyuki Ito , Hiroshi Eda
IPC分类号： B62D7/15
CPC分类号： B62D7/1581
摘要： A vehicle rear wheels steering apparatus is provided with a guide member having a guideway capable of freely tilting toward the axis of the rod member. Therefore, when the rod member rotates around the axis, an operating member provided on the outside of the rod member rotates around the rod member axis along the guideway to steer the rear wheels by an amount corresponding to an amount of rotation of the rod member and an amount of tilting of the guideway.

8. 发明授权

US5257191A Steering device for rear vehicle wheels 失效
标题翻译：后车轮转向装置
公开(公告)号：US5257191A
公开(公告)日：1993-10-26
申请号：US765529
申请日：1991-09-25
申请人： Shin Takehara , Ryuya Akita , Hiroshi Ohmura
发明人： Shin Takehara , Ryuya Akita , Hiroshi Ohmura
IPC分类号： B62D7/14 , B62D7/15
CPC分类号： B62D7/1581 , B62D7/148
摘要： A device for steering the rear wheels of a vehicle has a first motor controlled at least with respect to the steering angle of the steering wheel, a gear change mechanism for changing gear ratios, a second motor for controlling the gear ratio by driving the gear change mechanism, a steering mechanism for steering the rear wheels by transmitting a portion of the force equal to the product of the amount that the first motor is driven and the amount that the second motor is driven, a motor failure determination device for detecting motor failure when the amount that either of the first or second motors is driven is zero and the other of the motors is operated, and a control device for controlling both motors so that when motor failure is detected in one of the motors, the amount that the other motor is driven is brought to zero. The steering device may further have a sensor for detecting the steering angle of the rear wheels, and a sensor failure detecting device which monitors the steering angle detected by the sensor, and detects a failure of the sensor when the steering angle of the rear wheel changes although the amount that one of the motors is driven is zero. Also disclosed is a process for steering the rear wheels of a vehicle.

9. 发明授权

US5236057A Rear wheel steering apparatus for vehicle 失效
标题翻译：后轮车轮转向装置
公开(公告)号：US5236057A
公开(公告)日：1993-08-17
申请号：US755015
申请日：1991-09-04
申请人： Shin Takehara , Hiroshi Ohmura , Ryuya Akita , Isamu Chikuma , Hiroyuki Ito , Hiroshi Eda
发明人： Shin Takehara , Hiroshi Ohmura , Ryuya Akita , Isamu Chikuma , Hiroyuki Ito , Hiroshi Eda
IPC分类号： B62D7/14 , B62D7/15
CPC分类号： B62D7/1572 , B62D7/148 , B62D7/159
摘要： A rear wheel steering apparatus for a vehicle, comprises a hydraulic cylinder for displacing a steering rod connected to left and right rear wheels axially, a centering spring for biasing the steering rod toward a neutral position, and a centering spring cancelling mechanism for preventing a biasing force of the centering spring from acting on the steering rod. A partition wall of the hydraulic cylinder defines an oil chamber in the cylinder and is formed as a cup shape having a central concave portion which constitutes a pressure chamber of the centering spring cancelling mechanism.

10. 发明授权

US5227974A Rear wheel turning system for four-wheel steered vehicle 失效
标题翻译：四轮转向车后轮转向系统
公开(公告)号：US5227974A
公开(公告)日：1993-07-13
申请号：US661198
申请日：1991-02-27
申请人： Atsuo Tomoda , Shin Takehara , Ryuya Akita
发明人： Atsuo Tomoda , Shin Takehara , Ryuya Akita
IPC分类号： B62D6/00 , B62D5/04 , B62D7/14 , B62D7/15 , B62D101/00 , B62D111/00 , B62D113/00 , B62D137/00
CPC分类号： B62D7/159
摘要： A rear wheel turning system for a four-wheel steered vehicle includes a rear wheel turning mechanism for turning the rear wheels of the vehicle, a front wheel turning angle sensor which detects a turning angle of front wheels .theta..sub.F, a vehicle speed sensor which detects a vehicle speed V, a yaw rate detector which detects a yaw rate .PSI. of the vehicle, a yaw acceleration detector which detects a yaw acceleration .PSI. of the vehicle, and a control unit which causes the rear wheel turning mechanism to turn the rear wheels by a target rear wheel turning angle TG.theta..sub.R which is defined by formulaTG.theta..sub.R =-K.sub.1 .theta..sub.F +K.sub.2 .multidot.V.multidot..PSI.+K.sub.3 .multidot.V.multidot..PSI.wherein K.sub.1, K.sub.2 and K.sub.3 respectively represent positive coefficients. The coefficient K.sub.3 is increased with increase in the vehicle speed V over a predetermined range of vehicle speed where the coefficient K.sub.2 is constant.
摘要翻译：用于四轮转向车辆的后轮转向系统包括用于转动车辆后轮的后轮转向机构，检测前轮theta F的转动角度的前轮转向角度传感器，检测车速V，检测车辆的偏航率PSI的偏航率检测器，检测车辆的偏航加速度PSI的偏航加速度检测器以及使后轮转向机构将后轮转动的控制单元由公式TGθR = -K1°F + K2xVx PSI + K3xVx PSI定义的目标后轮转向角TGθR，其中K1，K2和K3分别表示正系数。在系数K2恒定的车速的预定范围内，系数K3随着车速V的增加而增加。

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