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    • 2. 发明授权
    • Compensation algorithm for initializing yaw rate sensor's zero point offset
    • 用于初始化偏航率传感器零点偏移的补偿算法
    • US06314329B1
    • 2001-11-06
    • US09188050
    • 1998-11-06
    • Dinu Petre MadauBehrouz Ashrafi
    • Dinu Petre MadauBehrouz Ashrafi
    • G05B1942
    • B60G17/019B60G2400/0523B60G2600/02B60G2600/082B60G2800/7022B60T8/172B60T2250/06B60T2250/062B60W2050/0215B60W2420/00B60W2520/14
    • When a motor vehicle is not in motion, an algorithm for establishing the initial zero point offset values for a yaw rate sensor as may be used in motor vehicle software control systems. The initial values are the manufactured values and are downloaded into the vehicle ECU at the time of the manufacture of the ECU. When the vehicle is waken at the vehicle assembly and the ignition is first turned on, the initial actual value of the zero point offset is stored both as a maximum and minimum value. At subsequent adjusting times when the vehicle is not moving, but the ignition is on, the spread between the maximum and minimum values are checked. If the spread becomes greater than a desired predetermined spread, the value, be it the maximum or minimum value reflects the measured value and the other value is adjusted to be within the desired spread. When the ignition is turned off and the vehicle is not moving, the zero point offset maximum and minimum values are stored in memory. The mean value is calculated to provide the new zero point offset value of the yaw rate sensor when the vehicle ignition is then turned on and the vehicle is not moving.
    • 当机动车辆不运动时,用于建立可用于机动车辆软件控制系统中的偏航率传感器的初始零点偏移值的算法。 初始值是制造值,在制造ECU时下载到车辆ECU中。 当车辆在车辆组件上被唤醒并且首先打开点火时,零点偏移的初始实际值被存储为最大值和最小值。 在车辆未移动但点火开启的随后的调整时刻,检查最大值和最小值之间的差值。 如果扩展变得大于期望的预定扩展,该值就是最大值或最小值反映测量值,另一个值被调整到期望的扩展之内。 当点火开关关闭并且车辆不动时,零点偏移最大值和最小值存储在存储器中。 计算出平均值,以便当车辆点火然后被接通并且车辆不移动时,提供横摆率传感器的新的零点偏移值。
    • 3. 发明授权
    • Relative vehicle platform having synchronized adaptive offset calibration for lateral accelerometer and steering angle sensor
    • 相对车辆平台具有用于横向加速度计和转向角传感器的同步自适应偏移校准
    • US06185485B2
    • 2001-02-06
    • US09218281
    • 1998-12-22
    • Behrouz AshrafiDinu Petre MadauHongtei Eric Tseng
    • Behrouz AshrafiDinu Petre MadauHongtei Eric Tseng
    • B62D600
    • B60T8/1755B60T2210/22
    • A system and method for vehicle dynamic control processes a compensated yaw rate signal measurement and a compensated lateral acceleration signal measurement (30, 32) to derive a signal measurement of road bank angle disturbance not compensated for in a compensated steering angle signal measurement and provides the derived signal to a controller (12). The compensated steering angle signal measurement is an input to the controller. Because a disturbance already compensated in the compensated steering angle signal measurement is transparent to the controller, the controller is able to adjust the control action of the vehicle dynamic control system based on the derived signal measurement of road bank angle disturbance not compensated for in a compensated steering angle signal measurement, thereby providing enhanced robustness of control.
    • 用于车辆动态控制的系统和方法处理补偿的横摆速率信号测量和补偿的横向加速度信号测量(30,32),以导出在补偿的转向角信号测量中未补偿的道路坡度角扰动的信号测量,并且提供 导出信号到控制器(12)。 补偿转向角信号测量是控制器的输入。 由于在补偿转向角信号测量中已经补偿的扰动对于控制器是透明的,所以控制器能够基于经补偿的道路坡度角扰动的未得到补偿的导出信号测量值来调整车辆动态控制系统的控制动作 转向角信号测量,从而提供更强的控制鲁棒性。
    • 6. 发明授权
    • Misalignment detection system for a steering system of an automotive vehicle
    • 汽车转向系统的未对准检测系统
    • US06408687B1
    • 2002-06-25
    • US09558773
    • 2000-04-26
    • Behrouz AshrafiDinu Petre Madau
    • Behrouz AshrafiDinu Petre Madau
    • G01M1900
    • B62D6/04B62D17/00
    • A misalignment detection system (12) for steering system of an automotive vehicle (10) includes a controller (14) coupled to a velocity sensor (18), and a yaw rate sensor (20). The controller is also coupled to a memory (16) that is used to store a steering ratio memory map and a historic steering wheel angle. The controller (14) determines a base steering wheel angle when the vehicle velocity is at a predetermined velocity. The base steering wheel angle is a function of the vehicle velocity, the yaw rate, and the steering ratio. The controller compares the current steering wheel angle with a historic steering wheel angle to determine an error. An indicator (22) may be provided to the vehicle operator to signal the presence of the misalignment of the steering system.
    • 用于机动车辆(10)的转向系统的未对准检测系统(12)包括耦合到速度传感器(18)的控制器(14)和偏航率传感器(20)。 控制器还耦合到用于存储转向比存储器映射和历史方向盘角度的存储器(16)。 当车速为预定速度时,控制器(14)确定基本方向盘角度。 基本方向盘角度是车辆速度,横摆角速度和转向比的函数。 控制器将当前方向盘角度与历史方向盘角度进行比较以确定错误。 可以向车辆操作者提供指示器(22),以指示转向系统的未对准的存在。