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    • 8. 发明申请
    • LATERAL AND LONGITUDINAL VELOCITY DETERMINATION FOR AN AUTOMOTIVE VEHICLE
    • 汽车行驶的纵向和纵向速度测定
    • US20070005212A1
    • 2007-01-04
    • US11160148
    • 2005-06-10
    • Li XuHongtei TsengJoseph Meyers
    • Li XuHongtei TsengJoseph Meyers
    • B60G17/016G06F17/00
    • B60R21/0132B60R2021/01327B60T8/172B60T2250/04B60W30/02B60W30/045B60W40/10
    • A system (18) for controlling a safety system (44) of an automotive vehicle (10) includes a longitudinal acceleration sensor (36), a vehicle speed sensor (20), a lateral acceleration sensor (32), a yaw rate sensor, and a controller (26). The controller (26) determines a stability index and provides a first observer that determines a reference longitudinal velocity in response to the longitudinal acceleration signal, the yaw rate signal, a pitch attitude and vehicle speed from wheel speed sensors. The controller (26) determines a reference lateral velocity in response to the lateral acceleration signal, the yaw rate signal, a roll attitude, a pitch attitude and vehicle speed from the wheel speed sensors. The controller provides a second observer that determines a second longitudinal velocity in response to the longitudinal acceleration signal, the yaw rate signal, a lateral velocity, the pitch attitude and a first adjustment based on the longitudinal reference velocity. The controller determines a second lateral velocity in response to the lateral acceleration signal, the yaw rate signal, a roll attitude, a pitch attitude and a second adjustment based on the lateral reference velocity. The controller determines an output lateral velocity and an output longitudinal velocity in response to the first observer, second observer and the stability index. The controller controls the safety system in response to the output lateral velocity and the output longitudinal velocity.
    • 用于控制机动车辆(10)的安全系统(44)的系统(18)包括纵向加速度传感器(36),车速传感器(20),横向加速度传感器(32),偏航率传感器 和控制器(26)。 控制器(26)确定稳定性指标,并且提供第一观测器,其响应于来自车轮速度传感器的纵向加速度信号,横摆率信号,俯仰姿态和车辆速度来确定参考纵向速度。 控制器(26)响应于来自车轮速度传感器的横向加速度信号,横摆率信号,滚动姿势,俯仰姿态和车辆速度来确定参考横向速度。 控制器提供第二观测器,其响应于纵向加速度信号,横摆率信号,横向速度,俯仰姿态和基于纵向参考速度的第一调整来确定第二纵向速度。 控制器响应于横向加速度信号,横摆率信号,滚动姿态,俯仰姿态和基于横向参考速度的第二调整来确定第二横向速度。 响应于第一观察者,第二观察者和稳定性指标,控制器确定输出横向速度和输出纵向速度。 控制器根据输出横向速度和输出纵向速度控制安全系统。
    • 9. 发明申请
    • ADAPTIVE TRACTION CONTROL SYSTEM
    • 自适应跟踪控制系统
    • US20060282207A1
    • 2006-12-14
    • US11160116
    • 2005-06-09
    • Hongtei TsengMichael FodorDavor Hrovat
    • Hongtei TsengMichael FodorDavor Hrovat
    • G06F17/00
    • B60K28/16B60W10/06B60W10/184B60W30/18172B60W2520/263B60W2520/28Y02T10/7258
    • A method of controlling a traction control system (30) includes continuously adapting a steady state driven wheel speed to reference wheel speed ratio, so that said traction control system can avoid unnecessary actuations (e.g., demanding torque reduction). The continuous adaptation methodology provides traction control robustness to vehicles equipped with a spare tire, or a different final drive such as in the use of aftermarket parts. The method includes a dual rate adaptation that allows both fast adaptation and fine tuning capabilities of the ratio. The method includes comparing the instant driven wheel speed to reference wheel speed ratio to the filtered driven wheel speed to reference wheel speed ratio, to obtain a ratio difference. When the difference is above a threshold, the first filter constant is selected and the first constant is applied to an adaptation filter, resulting in a first filtered and adapted ratio. The traction control system is controlled with the adapted ratio. When the difference is below the threshold, the second filter constant is selected and the selected constant is applied to the adaptation filter, resulting in the second filtered and adapted ratio. The traction control system is controlled with the adapted ratio.
    • 控制牵引力控制系统(30)的方法包括使稳态驱动轮速度连续地适应参考轮速比,使得所述牵引力控制系统可以避免不必要的动作(例如,要求转矩降低)。 持续适应方法为配备备用轮胎的车辆或不同的最终驱动装置(如使用售后部件)提供牵引力控制的鲁棒性。 该方法包括双速率适配,其允许比率的快速适应和微调能力。 该方法包括将即时驱动轮速度与参考轮速比与过滤后的从动轮速度相对于参考轮速比进行比较,以获得比率差。 当差值高于阈值时,选择第一滤波常数,将第一常数应用于自适应滤波器,得到第一滤波和适应比。 牵引力控制系统以适应的比例进行控制。 当差值低于阈值时,选择第二滤波常数,并将所选常数应用于自适应滤波器,得到第二滤波和适应比。 牵引力控制系统以适应的比例进行控制。