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    • 7. 发明授权
    • Steering and brake controlling system
    • 转向和制动控制系统
    • US4998593A
    • 1991-03-12
    • US331343
    • 1989-03-31
    • Dean C. KarnoppYoshiyuki Yasui
    • Dean C. KarnoppYoshiyuki Yasui
    • B60T8/1755B60T8/1761B60T8/24B60T8/58B62D6/00B62D7/15B62D101/00B62D105/00B62D113/00
    • B62D6/003B60T8/1755B62D7/159B60G2400/0523B60G2400/1042B60G2800/702B60T2230/03B60T2260/024
    • Steering and braking are coordinated and controlled according to a sensed yaw rate error or lateral acceleration error to increase vehicle stability without increasing braking distance. A desired yaw rate or lateral acceleration rate is computed from the vehicle velocity and the steering wheel angle. If the yaw rate or the lateral acceleration is excessive, indicating instability, and the brakes are being operated, then both steering and braking are controlled to reduce the yaw rate or lateral acceleration rate. In all other cases, steering control alone is performed. The yaw rate or lateral acceleration rate is reduced under steering control by adjusting wheel positions in a direction opposite the direction of yaw or lateral acceleration. The control system of the present invention is applicable to both two-wheel and four-wheel steering and braking. The yaw rate or lateral acceleration is further reduced under braking control by decreasing brake pressure on a side of the vehicle corresponding to the direction of yaw or lateral acceleration and increasing brake pressure on the opposite side of the vehicle. In the case of anti-lock brakes, pressure is not increased beyond a slip rate threshold. Rather than controlling brake pressure, the slip rate threshold itself may be controlled in like manner to reduce the yaw rate or lateral acceleration.
    • 根据感测到的横摆角速度误差或横向加速度误差来协调和控制转向和制动,以增加车辆稳定性而不增加制动距离。 从车辆速度和方向盘角度计算出期望的偏航率或横向加速度。 如果偏航率或横向加速度过大,指示不稳定性,并且制动器正在操作,则控制转向和制动以减小偏航率或横向加速度。 在所有其他情况下,仅执行转向控制。 通过在与偏航方向或横向加速度方向相反的方向上调整车轮位置,在转向控制下减小偏航率或横向加速度。 本发明的控制系统适用于两轮和四轮转向和制动。 在制动控制下,横摆速度或横向加速度进一步减小,通过减少对应于偏航方向或侧向加速度的车辆侧的制动压力并增加车辆相对侧上的制动压力。 在防抱死制动器的情况下,压力不会超过滑动率阈值。 而不是控制制动压力,可以以相似的方式控制滑移率阈值本身以减小横摆率或横向加速度。
    • 8. 发明授权
    • Steering control methods and apparatus
    • 转向控制方法和装置
    • US4941097A
    • 1990-07-10
    • US243822
    • 1988-09-13
    • Dean C. KarnoppYoshiyuki Yasui
    • Dean C. KarnoppYoshiyuki Yasui
    • B62D6/00B62D6/04B62D7/15B62D9/00
    • B62D6/04B62D7/159B62D9/00
    • The steering stability of a moving vehicle is maintained by measuring an actual yaw rate of the vehicle and determining a desired yaw rate of the vehicle. An output signal is produced in response to a comparison of the actual and desired yaw rates. The angle of steerable wheels of the vehicle is controlled in response to the output signal in a manner tending to substantially conform the actual yaw rate to the desired yaw rate, thereby maintaining vehicle stability. The steerable wheels are steered by a steering wheel, and are independently steered in response to the output signal. Alternatively, the steerable wheels are steered solely in response to the output signal.
    • 通过测量车辆的实际横摆角速度并确定车辆的期望偏航角速度来维持移动车辆的操纵稳定性。 响应于实际和所需偏航率的比较而产生输出信号。 车辆的可转向轮的角度响应于输出信号而受到控制,倾向于使实际横摆率基本上符合所需的横摆角速度,从而保持车辆的稳定性。 可转向轮由方向盘转向,并响应于输出信号独立转向。 或者,可转向的车轮仅仅响应于输出信号转向。