公开(公告)号：US06236915B1

公开(公告)日：2001-05-22

申请号：US09525132

申请日：2000-03-14

Applicant: Yoshimi Furukawa ,  Sachio Kobayashi

Inventor： Yoshimi Furukawa ,  Sachio Kobayashi

IPC: G06F770

CPC classification number: G05B13/026 ,  G05D1/0257 ,  G05D1/0261 ,  G05D1/0289 ,  G05D2201/0213 ,  G08G1/166

Abstract: In driving a motor vehicle in accordance with a control plan, the influence of the inclination of a road is recognized so as to realize an accurate control. The position and speed of a vehicle after a predetermined time period as estimated on the basis of the detection of magnetic nails, are estimated by a first processing portion, while the control plan of the vehicle (the correlation between the position and speed of the vehicle) is determined by a control plan processing portion on the basis of information received from a leakage coaxial cable. The deviations between the control plan and the estimated position and speed of the vehicle are calculated, and these deviations are further multiplied by gains Kx and Ku in a control plan converting portion so as to calculate a target acceleration. A throttle and a brake are controlled on the basis of the target acceleration, whereby the vehicle is driven in conformity with the controls. A correction device corrects the target acceleration in order to eliminate the influence of the inclination of a road.

Abstract translation: 在根据控制计划驾驶汽车时，识别道路的倾斜的影响，以实现精确的控制。 在基于磁指甲的检测推定的预定时间段之后的车辆的位置和速度由第一处理部分估计，同时车辆的控制计划（车辆的位置和速度之间的相关性 ）由控制计划处理部分基于从泄漏同轴电缆接收的信息来确定。 计算控制计划与车辆的估计位置和速度之间的偏差，并且这些偏差进一步乘以控制计划转换部分中的增益Kx和Ku，以便计算目标加速度。 基于目标加速度来控制节气门和制动器，由此根据控制器驱动车辆。 校正装置校正目标加速度以消除道路倾斜的影响。

公开(公告)号：US5019982A

公开(公告)日：1991-05-28

申请号：US410281

申请日：1989-09-21

Applicant: Yoshimi Furukawa

Inventor： Yoshimi Furukawa

IPC: B62D7/14 ,  B62D6/00 ,  B62D7/15 ,  B62D101/00 ,  B62D111/00 ,  B62D113/00 ,  B62D137/00

CPC classification number: B62D7/159

Abstract: The rear road wheels of a four-wheel steering motor vehicle are controlled so that a steer angle ratio of a rear wheel steer angle to a front wheel steer angle is variably controlled depending on the lateral acceleration. The steer angle ratio is selected so as to be in a range defined by:f1(yo)-g(yo) .multidot.f2(yo).gtoreq.0wheref1(yo)=Cfo/mf;f2(yo)=Cro/mr;Cfo, Cro are equivalent cornering powers of the tires of the front and rear road wheels while the motor vehicle is making a steady-state turn; andmf, mr are equivalent masses at the front and rear axles of the motor vehicle.

Abstract translation: 控制四轮转向机动车辆的后轮，使得后轮转向角与前轮转向角的转向角度根据横向加速度可变地控制。 选择转向角比，以便在以下范围内定义：f1（哟）-g（哟）xf2（yo）> / = 0其中f1（哟）= Cfo / mf; f2（yo）= Cro / mr; Cfo，Cro是前轮和后轮的轮胎的等效转弯力，同时机动车正在进行稳态转弯; mf，mr是机动车辆前后轴上的等效质量。

公开(公告)号：US5010971A

公开(公告)日：1991-04-30

申请号：US189657

申请日：1988-05-03

Applicant: Tetsuro Hamada ,  Shoichi Sano ,  Yoshimi Furukawa

Inventor： Tetsuro Hamada ,  Shoichi Sano ,  Yoshimi Furukawa

IPC: B62D7/15

CPC classification number: B62D7/159

Abstract: A steering system (1) for vehicles including a front wheel steering mechanism (1a) for steering front wheels (5) at an angle in accordance with a steering operation of a driver, and a rear wheel steering mechanism (1b) for steering rear wheels (11) at an angle (Sr) in accordance with a travelling state of the vehicle.For the steering of the rear wheel, a reference steering angle (Ar) according to a turning state of the vehicle and a corrective steering angle (Ac) according to a velocity derivative thereof are computed, and the steering angle (Sr) of the rear wheel is obtained by making either an addition or a subtraction of the reference and corrective steering angles at least in accordance with the velocity derivative.

公开(公告)号：US4951207A

公开(公告)日：1990-08-21

申请号：US248869

申请日：1988-09-23

Applicant: Yoshimi Furukawa ,  Akihiko Takei ,  Shinnosuke Ishida ,  Nobuyuki Oono

Inventor： Yoshimi Furukawa ,  Akihiko Takei ,  Shinnosuke Ishida ,  Nobuyuki Oono

IPC: B62D1/00 ,  B62D5/00 ,  B62D6/00 ,  B62D6/04 ,  B62D7/08 ,  B62D7/15

CPC classification number: B62D5/008 ,  B62D6/003

Abstract: The method of the present invention improves the damping property of the yaw motion of the vehicle by feeding back a detected yaw rate value in a dynamic sense for compensating the front wheel steer angle so as to increase the damping coefficient of the yaw motion of the vehicle. By controlling the front wheel steer angle by accounting for not only the proportional term of the steering wheel input angle but also the derivative term which is proportional to the steering wheel input angular speed, in the feed-forward control of the front wheel steer angle in relation with the steering operation by the driver, and by appropriately varying the control parameters of the yaw rate feed-back and the steering wheel input feed-forward, the yaw response of the vehicle can be made proportional to the steering wheel input, and the response delay in the yaw rate against the steering wheel input can be reduced to substantially zero.

公开(公告)号：US4790551A

公开(公告)日：1988-12-13

申请号：US10457

申请日：1987-02-03

Applicant: Norio Ukai ,  Mitsuya Serizawa ,  Yasuharu Oyama ,  Yoshimi Furukawa ,  Masami Ogura ,  Tsuyoshi Sato

Inventor： Norio Ukai ,  Mitsuya Serizawa ,  Yasuharu Oyama ,  Yoshimi Furukawa ,  Masami Ogura ,  Tsuyoshi Sato

IPC: B62D7/15 ,  B62D15/02 ,  B62D7/00

CPC classification number: B62D15/02 ,  B62D7/1527

Abstract: A steering system for a motor vehicle includes a centering mechanism for establishing a neutral steering position. The steering system includes a steering wheel and a steering assembly for steering vehicle wheels in response to angular movement of the steering wheel. The centering mechanism is mounted on at least a portion of the steering assembly for establishing the neutral steering position of the steering assembly.

Abstract translation: 用于机动车辆的转向系统包括用于建立中立转向位置的定中心机构。 转向系统包括方向盘和用于响应于方向盘的角度运动而转向车轮的转向组件。 定心机构安装在转向组件的至少一部分上，用于建立转向组件的中立转向位置。

公开(公告)号：US4703945A

公开(公告)日：1987-11-03

申请号：US822008

申请日：1986-01-24

Applicant: Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

Inventor： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC: B62D7/15 ,  B62D5/06

CPC classification number: B62D7/1545

Abstract: An actuator for steering the rear wheels in front and rear steering device for a vehicle in which the steering angle of the rear wheels can be manually neutralized should the actuator fail with the rear wheels steered to a certain angle. The actuator may be a type which either directly steers the rear wheels following command from control means or varies the state of means for setting up the steering angle ratio of the rear wheels. In either case, a preferably detachable handle may be engaged to an output end of power means of the actuator. Thus, the situation in which the rear wheels are frozen at a certain steering angle and the driving of the vehicle becomes difficult is safely avoided.

Abstract translation: 如果在后轮转向一定角度的情况下，执行器将会在后轮的前后转向装置中转向后轮的致动器，其中后轮的转向角可以手动中和。 致动器可以是直接从控制装置引导的后轮的转向或改变用于设定后轮的转向角比的装置的状态。 在任一情况下，优选地可拆卸手柄可以接合到致动器的动力装置的输出端。 因此，安全地避免了后轮在一定的转向角度被冻结并且车辆的行驶变得困难的情况。

公开(公告)号：US4703822A

公开(公告)日：1987-11-03

申请号：US844806

申请日：1986-03-27

Applicant: Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

Inventor： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC: B62D6/02 ,  B62D6/00 ,  B62D7/14 ,  B62D7/15 ,  B62D101/00 ,  B62D111/00 ,  B62D113/00 ,  B62D5/00 ,  B62D7/00

CPC classification number: B62D7/159

Abstract: A front and rear wheel steering device which varies the steering angle ratio of rear wheels relative to the steering angle of front wheels in relation with vehicle speed is utilized to improve the drive response of a vehicle, as well as to improve the maneuverability of the vehicle. By varying the steering angle ratio which is a function of vehicle speed according to the running condition of the vehicle, the interference of the running condition of the vehicle upon the driving response can be reduced. The driving response may be evaluated in terms of yaw rate or lateral acceleration of the vehicle for a certain steering input. The running condition of the vehicle may comprise any combination of vehicle acceleration, friction between tires and the road surface, load acting between front wheels and the road surface, and load acting between rear wheels and the road surface.

Abstract translation: 利用相对于车速相对于前轮的转向角度改变后轮的转向角比的前后转向装置，以提高车辆的行驶响应，提高车辆的机动性 。 通过根据车辆的行驶状态改变作为车速的函数的转向角比，可以减少车辆在行驶响应时的行驶状态的干扰。 驾驶响应可以根据用于某一转向输入的车辆的偏航率或横向加速度来评估。 车辆的运行状态可以包括车辆加速度，轮胎和路面之间的摩擦，在前轮和路面之间作用的负载以及作用在后轮与路面之间的负载的任何组合。

公开(公告)号：US4669744A

公开(公告)日：1987-06-02

申请号：US849763

申请日：1986-04-09

Applicant: Shoichi Sano ,  Yoshimi Furukawa

Inventor： Shoichi Sano ,  Yoshimi Furukawa

IPC: B62D6/00 ,  B62D7/14 ,  B62D7/15 ,  B62D101/00 ,  B62D113/00 ,  B62D7/00

CPC classification number: B62D7/1581

Abstract: A motor vehicle has two steerable righthand and lefthand front wheels and two steerable righthand and lefthand rear wheels, a front wheel steering device for steering the front wheels according to the angle through which a steering wheel is turned, a rear wheel steering device for steering the rear wheels, an actuator for actuating said rear wheel steering device, and a control device for controlling the operation of the actuator to steer the rear wheels in a direction which is selectively the same as or opposite to the direction in which the front wheels are turned. The steering of the rear wheels is controlled by determining the speeds of rotation of the four front and rear wheels with respect to the ground, and controlling the operation of the actuator with the control device so that any difference between the speeds of rotation of the front and rear wheels with respect to the ground will be reduced substantially to zero.

Abstract translation: 机动车具有两个可操纵的右手和左后轮和两个可操纵的右手和左后轮，一个前轮转向装置，用于根据方向盘转动的角度转向前轮，一个用于转向的后轮转向装置 后轮，用于致动所述后轮转向装置的致动器，以及控制装置，用于控制致动器的操作以使后轮沿与前轮转向方向选择性地相反或相反的方向转向 。 通过确定四个前轮和后轮相对于地面的旋转速度来控制后轮的转向，并且通过控制装置控制致动器的操作，使得前轮的旋转速度之间的任何差异 并且相对于地面的后轮将基本上减小到零。

公开(公告)号：US4647058A

公开(公告)日：1987-03-03

申请号：US681509

申请日：1984-12-14

Applicant: Yoshimi Furukawa ,  Shoichi Sano

Inventor： Yoshimi Furukawa ,  Shoichi Sano

IPC: B62D7/14 ,  B62D7/15 ,  B62D7/00

CPC classification number: B62D7/1527 ,  Y10T74/19623

Abstract: A steering mechanism in a motor vehicle having front and rear wheels steerable in response to steering operation of a steering wheel. An input shaft rotatable about its own axis in response to steering operation of the steering wheel has an eccentric shaft mounted on a rear end of the input shaft. A tubular member is rotatably fitted over the eccentric shaft and has an integral pinion and an integral eccentric cam. An internal gear disposed in fixed relationship to a vehicle body of the motor vehicle is held in meshing engagement with the pinion. A pair of tie rods supporting the rear wheels, respectively, is interconnected by a joint member rotatably mounted on the eccentric cam.

Abstract translation: 一种机动车辆中的转向机构，其具有响应于方向盘的转向操作而可转向的前轮和后轮。 响应于方向盘的转向操作，可绕其自身的轴线旋转的输入轴具有安装在输入轴后端的偏心轴。 管状构件可旋转地装配在偏心轴上并且具有整体式小齿轮和整体偏心凸轮。 与机动车辆的车体成固定关系的内齿轮保持与小齿轮啮合。 分别支撑后轮的一对拉杆通过可旋转地安装在偏心凸轮上的联接构件相互连接。

公开(公告)号：US4614351A

公开(公告)日：1986-09-30

申请号：US748672

申请日：1985-06-25

Applicant: Shoichi Sano ,  Yoshimi Furukawa ,  Yutaka Tashiro

Inventor： Shoichi Sano ,  Yoshimi Furukawa ,  Yutaka Tashiro

IPC: B62D7/15 ,  B62D7/00

CPC classification number: B62D7/1527 ,  Y10T74/18256

Abstract: A steering apparatus for a vehicle having steerable front and rear wheels includes a front wheel steering system for steering the front wheels, a rear wheel steering system for steering the rear wheels, a linkage member for coupling the front and rear wheel steering systems to each other. The rear wheel steering system comprises a housing adapted to be mounted on the vehicle, an input shaft angularly movably supported by the housing and having a front end coupled to the connecting means and an eccentric shaft on a rear end thereof, a joint member supported by the housing so as to be movable transversely of the vehicle, a pair of tie rods connected at ends to the joint member and at opposite ends to the rear wheels, and a slide member held in slidable engagement with the joint member and operatively coupled to the eccentric shaft for movement in response to angular movement of the input shaft. The joint member and the slide member are held in tapered engagement with each other to assure desired operation of the steering apparatus for an extended period of time.

Abstract translation: 一种用于具有可转向前轮和后轮的车辆转向装置，包括用于转向前轮的前轮转向系统，用于转向后轮的后轮转向系统，用于将前轮和后轮转向系统彼此联接的联动构件 。 后轮转向系统包括适于安装在车辆上的壳体，由壳体角度可移动地支撑并具有联接到连接装置的前端和其后端上的偏心轴的输入轴， 所述壳体能够横向移动;一对拉杆，其连接在所述接头构件的端部处，并且在相对端部连接到所述后轮;以及滑动构件，其保持与所述接头构件可滑动地接合并可操作地联接到所述接合构件 用于响应于输入轴的角运动而运动的偏心轴。 联接构件和滑动构件保持彼此锥形接合，以确保转向装置长时间的期望操作。