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    • 1. 发明授权
    • Steering control system for wheeled vehicle
    • 轮式车辆转向控制系统
    • US4666013A
    • 1987-05-19
    • US695478
    • 1985-01-28
    • Yasuji ShibahataYukio FukunagaKenji NakamuraYasumasa TsubotaNamio IrieJunsuke Kuroki
    • Yasuji ShibahataYukio FukunagaKenji NakamuraYasumasa TsubotaNamio IrieJunsuke Kuroki
    • B62D6/02B62D6/04B62D7/14B62D7/15B62D5/00
    • B62D7/159B62D7/146B60G2202/32B60G2202/322B60G2206/1116
    • A wheeled vehicle is equipped with a feedforward steering control system which steers the vehicle through front or rear road wheels in accordance with a driver's steering input such as an angular displacement of a steering wheel, and a negative feedback system which senses a turning behavior of the vehicle such as a yaw rate or a lateral acceleration, and steers the vehicle through the front or rear wheels in such a negative direction as to reduce the turning behavior. The feedforward system may control the angular direction of the front or rear wheels in accordance with a linear combination of the steering input and the time derivative of the steering input, or may control the angular directions of both of the front and rear wheels in accordance with different transfer functions between the steering input and the front and rear wheel angles. The negative feedback system is combined with the feedforward system in various ways to provide desired characteristics of the turning behavior. The negative feedback quantity determined by the negative feedback system may be proportional to the sensed turning behavior, or may be determined in accordance with the difference between the sensed turning behavior, and the reference turning behavior calculated from the vehicle speed and steering input.
    • 轮式车辆配备有前馈转向控制系统,其根据驾驶员的转向输入(例如方向盘的角位移)和负反馈系统,通过前车轮或后车轮转向车辆,以及负反馈系统,其感测车轮的转向行为 车辆,例如偏航率或横向加速度,并且以如此减小转弯行为的方向使车辆通过前轮或后轮。 前馈系统可以根据转向输入和转向输入的时间导数的线性组合来控制前轮或后轮的角度方向,或者可以根据转向输入的时间导数来控制前轮和后轮的角度方向 转向输入与前轮和后轮之间的转换功能不同。 负反馈系统与前馈系统以各种方式结合,以提供所需的转向特性。 由负反馈系统确定的负反馈量可以与感测到的转向行为成比例,或者可以根据感测到的转向行为与根据车速和转向输入计算的参考转弯行为之间的差来确定。
    • 7. 发明授权
    • Rear wheel steer angle control system for vehicle
    • 后轮转向角度控制系统
    • US4947326A
    • 1990-08-07
    • US277745
    • 1988-11-30
    • Kazunori MoriNamio Irie
    • Kazunori MoriNamio Irie
    • B62D7/15
    • B62D7/159
    • A rear wheel steer angle control system for a vehicle includes a vehicle speed sensor, a steering wheel angle sensor and a controller for controlling a rear wheel steer angle .delta..sub.r (s) with respect to a front wheel steer angle .delta..sub.f (s) in accordance with .delta..sub.r (s)/.delta..sub.f (s)=(K+Tls)/(1+T2s), where K, T1 and T2 are control parameters each of which is a function of the vehicle speed, and includes a quantity representing a distance of a zero sideslip angle position from a center of gravity of the vehicle. The quantity representing the distance of the zero sideslip angle position at which the sideslip angle is to be zero, may be fixed at a constant value, or may be adjusted in accordance with any one or more of the vehicle speed, the steering wheel angle and the time rate of change of the steering wheel angle.
    • 用于车辆的后轮转向角度控制系统包括车速传感器,方向盘角度传感器和用于控制相对于前轮转向角度f(s)的后轮转向角度角(r)的控制器, 根据delta r(s)/ delta f(s)=(K + Tls)/(1 + T2s),其中K,T1和T2是每个都是车速的函数的控制参数, 代表来自车辆重心的零侧滑角位置的距离。 表示侧滑角度为零的零侧滑角位置的距离的量可以固定为恒定值,或者可以根据车速,方向盘角度和方向盘角度中的任一个或多个来调整 方向盘角度的时间变化率。