System for correctively controlling turning movement of vehicle
    2.
    发明授权
    System for correctively controlling turning movement of vehicle 失效
    适用于车辆转向运动的系统

    公开(公告)号:US5136507A

    公开(公告)日:1992-08-04

    申请号:US531725

    申请日:1990-06-01

    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。

    Front and rear wheel steering device
    3.
    发明授权
    Front and rear wheel steering device 失效
    前后轮转向装置

    公开(公告)号:US4697816A

    公开(公告)日:1987-10-06

    申请号:US822043

    申请日:1986-01-24

    CPC分类号: B62D7/1545

    摘要: In a front and rear wheel steering device for a vehicle in which the steering angle ratio of the rear wheels relative to the front wheels is variable according to the vehicle speed, by accounting for the magnitude of vehicle acceleration in determining the steering angle ratio of the rear wheels by selecting a mathematical function from a plurality thereof, the vehicle response particularly in high speed range can be improved. Smooth transition from a certain characteristics to another may be achieved either by preparing a number of mathematical functions of vehicle speed for the steering angle ratio of the rear wheels or providing some time delay in the transition from one characteristics to another, preferably in proportion to the magnitude of the vehicle acceleration.

    摘要翻译: 在前轮和后轮转向装置中,其中后轮相对于前轮的转向角比可根据车速而变化,通过考虑确定车辆的转向角比的车辆加速度的大小, 通过从多个数学函数中选择数学函数,可以提高特别是在高速范围内的车辆响应。 从一定特性到另一特性的平滑过渡可以通过为后轮的转向角比准备多个车速的数学函数或者在从一个特性到另一特性的转变中提供一些时间延迟来实现,优选地与 车辆加速度的大小。

    Vehicle steering control system
    4.
    发明授权
    Vehicle steering control system 失效
    车辆转向控制系统

    公开(公告)号:US5251135A

    公开(公告)日:1993-10-05

    申请号:US764728

    申请日:1991-09-24

    CPC分类号: B62D6/003 B62D5/001 B62D6/002

    摘要: In a "steer-by-wire" vehicle steering control system which steers steerable wheels with a powered actuator according to an input signal obtained from a sensor associated with a steering wheel, to the end of achieving an optimum vehicle response to a steering input, a compensatory transfer function is introduced between the steering wheel and the powered steering actuator. The compensatory transfer function can be obtained by suitable manipulation of the transfer functions of the hardware involved and a desired overall transfer function. The frequency domain compensatory transfer function is transformed into a time-domain input-output relationship, and the steering mechanism is actuated accordingly as a real time operation. By suitable selection of the desired overall transfer function, it is possible to achieve a vehicle response both stable and favorable.

    摘要翻译: 在“线控转向”车辆转向控制系统中,根据从与方向盘相关联的传感器获得的输入信号,通过动力传动装置转向可转向轮,直至达到对转向输入的最佳车辆响应, 在方向盘和动力转向致动器之间引入补偿传递函数。 补偿传递函数可以通过适当地操纵所涉及的硬件的传递函数和期望的总体传递函数来获得。 频域补偿传递函数被转换为时域输入输出关系,并且转向机构作为实时操作相应地被致动。 通过适当地选择所需的整体传递函数,可以实现稳定和有利的车辆响应。

    Front and rear wheel steering device
    5.
    发明授权
    Front and rear wheel steering device 失效
    前后轮转向装置

    公开(公告)号:US4706976A

    公开(公告)日:1987-11-17

    申请号:US822010

    申请日:1986-01-24

    IPC分类号: B62D6/02 B62D7/14 B62D7/15

    CPC分类号: B62D7/1545

    摘要: In a front and rear wheel steering device for a vehicle in which the steering angle ratio of the rear wheels relative to the front wheels is variable according to the vehicle speed, by accounting for the magnitude of vehicle acceleration in determining the steering angle ratio of the rear wheels by using a mathematical function in the form of f(u) - g(u')where u is a vehicle speed and u' is a change rate of the vehicle speed, it is possible to reduce the slip angle of the vehicle to zero irrespective of the vehicle speed and the vehicle acceleration and the phase delay of the lateral response of the vehicle can be reduced, whereby the driveability of the vehicle is substantially improved and, thus, driving a car can be made easier, safer and less tiring.

    摘要翻译: 在前轮和后轮转向装置中,其中后轮相对于前轮的转向角比可根据车速而变化,通过考虑确定车辆的转向角比的车辆加速度的大小, 通过使用f(u)-g(u')形式的数学函数,其中u是车速,u'是车速的变化率,可以减小车辆的滑移角 无论车速如何,车辆的加速度和车辆的横向响应的相位延迟都可以减小,由此可以显着提高车辆的驾驶能力,因此可以使驾驶汽车更容易,更安全,更少 累了

    Front and rear wheel steering device
    6.
    发明授权
    Front and rear wheel steering device 失效
    前后轮转向装置

    公开(公告)号:US4695068A

    公开(公告)日:1987-09-22

    申请号:US822000

    申请日:1986-01-24

    IPC分类号: B62D7/15 B62D6/00

    CPC分类号: B62D7/1545

    摘要: In a front and rear wheel steering device contive for vehicle in which the steering angle ratio of the rear wheels relative to the front wheels is variable according to the vehicle speed, provision of a manual selection means for fixing the steering angle ratio to certain fixed values which may be either positive or negative can greatly improve the maneuverability of the vehicle in both high speed and low speed ranges. However, inadvertent manual selection of the steering angle ratio is not desirable since it may cause a sudden change in the steering angle of the rear wheels. Therefore, this invention provides means for preventing the manual selection of the steering angle ratio when it is not proper. This means may be an active prohibition control of manual steering angle ratio selection means, an alarm to warn the driver or a vehicle speed control which limits the vehicle speed. The situations in which the manual selection of the steering angle ratio is not proper may be determined from such factors as vehicle acceleration, transmission shift position, steering rate and so on.

    摘要翻译: 在后轮相对于前轮的转向角比可根据车速而变化的车辆用后轮转向装置中,设置用于将转向角比固定为某一固定值的手动选择装置 其可以是正的或负的可以大大提高车辆在高速和低速范围内的机动性。 然而,无意的手动选择转向角比是不期望的,因为它可能导致后轮的转向角的突然变化。 因此,本发明提供了当不适当时防止手动选择转向角比的装置。 这意味着可以是手动转向角比选择装置的主动禁止控制,警告驾驶员的警报或限制车辆速度的车速控制。 可以根据车辆加速度,变速档位,转向率等因素来确定手动选择转向角比例不正确的情况。

    Front and rear wheel steering apparatus for motor vehicles
    7.
    发明授权
    Front and rear wheel steering apparatus for motor vehicles 失效
    用于机动车辆的前轮和后轮转向装置

    公开(公告)号:US4902028A

    公开(公告)日:1990-02-20

    申请号:US245465

    申请日:1988-09-16

    IPC分类号: B62D7/15

    CPC分类号: B62D7/1527

    摘要: An apparatus for steering the front and rear wheels of a motor vehicle includes a front wheel steering mechanism for steering the front wheels in response to operation of a steering wheel, a rear wheel steering mechanism for steering the rear wheels at least in the same direction as the direction in which the front wheels are steered, and a connector shaft mechanically interconnecting the front and rear wheel steering mechanisms. A rotation control mechanism employing a viscous fluid is mounted on the connector shaft for applying a resistive force dependent on the speed of rotation of the steering wheel to the connector shaft.

    摘要翻译: 用于转向机动车辆的前轮和后轮的装置包括:前轮转向机构,用于响应于方向盘的操作而转向前轮;后轮转向机构,用于至少沿与 前轮转向的方向,以及机械地连接前后轮转向机构的连接轴。 使用粘性流体的旋转控制机构安装在连接器轴上,用于将取决于方向盘的旋转速度的阻力施加到连接器轴。

    Actuator for steering the rear wheels in front and rear wheel steering
device for vehicle
    9.
    发明授权
    Actuator for steering the rear wheels in front and rear wheel steering device for vehicle 失效
    用于车辆前轮和后轮转向装置的后轮转向的执行器

    公开(公告)号:US4703945A

    公开(公告)日:1987-11-03

    申请号:US822008

    申请日:1986-01-24

    IPC分类号: B62D7/15 B62D5/06

    CPC分类号: B62D7/1545

    摘要: 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.

    摘要翻译: 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。

    Front and rear wheel steering device for a vehicle
    10.
    发明授权
    Front and rear wheel steering device for a vehicle 失效
    用于车辆的前轮和后轮转向装置

    公开(公告)号:US4703822A

    公开(公告)日:1987-11-03

    申请号:US844806

    申请日:1986-03-27

    CPC分类号: B62D7/159

    摘要: 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.

    摘要翻译: 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。