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    • 12. 发明授权
    • Method and apparatus for minimizing driver disturbance in a limited by-wire active steering system
    • 用于在有限的有线主动转向系统中最小化驾驶员干扰的方法和装置
    • US08116943B2
    • 2012-02-14
    • US12108731
    • 2008-04-24
    • Ross FellerRobert R. Bolio
    • Ross FellerRobert R. Bolio
    • B62D5/04
    • B62D5/008B62D6/002B62D6/008
    • A method is provided for limiting a steering angle overlay applied by a steering actuator in a limited by-wire active front steering (AFS) system. The method includes determining a maximum rate limit for the steering angle overlay in order to minimize an undesired disturbance to the driver in the form of a torque and/or angle feedback while maximizing the rate of steering overlay allowed for a given set of vehicle operating conditions. The maximum rate limit is determined by a function of the input steering rate and braking level. A limited AFS system includes both steering and braking input devices, a steering actuator, and a controller having an algorithm. The controller uses the algorithm to calculate the maximum overlay rate limit and limits the steering actuator to the maximum overlay rate limit.
    • 提供一种用于限制由有限的有线前转向(AFS)系统中的转向致动器施加的转向角覆盖的方法。 该方法包括确定转向角覆盖物的最大速率限制,以便以扭矩和/或角度反馈的形式最小化对驾驶员的不期望的干扰,同时最大化给定的一组车辆操作条件允许的转向覆盖率 。 最大速率限制由输入转向率和制动电平的函数决定。 有限的AFS系统包括转向和制动输入装置,转向致动器和具有算法的控制器。 控制器使用算法计算最大重叠速率限制,并将转向执行器限制在最大重叠速率限制。
    • 13. 发明授权
    • Methods and apparatus for an active front steering actuator
    • 主动前转向执行器的方法和装置
    • US07420350B2
    • 2008-09-02
    • US11560876
    • 2006-11-17
    • Chandra S. NamuduriRobert R. BolioWillard A. Hall
    • Chandra S. NamuduriRobert R. BolioWillard A. Hall
    • G05B11/42G05B11/01
    • B62D5/008B62D5/046
    • An active front steering system includes a motor controller configured to compute a position error from a commanded position value and an actual position value, and then enter one of two modes—a commutation enable mode and a commutation freeze mode—depending upon the value of this position error. The commutation freeze mode applies when the absolute value of the position error is less than a predetermined threshold, and involves sending a set of signals to the motor's phase inputs such that commutation of the motor is prevented and a substantially constant motor hold torque is produced. The commutation enable mode applies when the absolute value of the position error is greater than or equal to the predetermined threshold, and corresponds to normal commutating operating mode.
    • 主动前转向系统包括电动机控制器,该电动机控制器被配置为根据命令位置值和实际位置值计算位置误差,然后根据该值的值,输入换向启用模式和换向冻结模式中的一种 位置错误。 当位置误差的绝对值小于预定阈值时,应用换向冻结模式,并且涉及向电动机的相位输入发送一组信号,从而防止电动机的换向,并且产生基本上恒定的电动机保持转矩。 当位置误差的绝对值大于或等于预定阈值时,适用换向启用模式,并且对应于正常换向操作模式。
    • 14. 发明申请
    • MECHANICAL AND ELECTRICAL LOCKING COORDINATION SECURITY STRATEGY FOR AN ACTIVE FRONT STEER SYSTEM
    • 机械和电气锁定协调安全策略,用于有源前转向系统
    • US20080065294A1
    • 2008-03-13
    • US11530976
    • 2006-09-12
    • Kerfegar K. KatrakRobert R. Bolio
    • Kerfegar K. KatrakRobert R. Bolio
    • B62D6/00
    • B62D5/008B62D6/002
    • A system as described herein relates generally to automotive active front steering control systems having a main processor and a redundant sub-processor. The system provides a way of controlling the electrical and mechanical locking of an actuator motor in a variable gear ratio active front steering system. The method enables the sub-processor to electrically lock the active front steer actuator motor via the main processor to reduce mechanical wear or damage to the variable gear ratio system if the main processor is unable to electrically lock the actuator motor before it mechanically locks the actuator motor. The system also provides an error detecting technique that is robust to false failures and allows the active front steering system to safely transition into a fail safe mode if an error occurs.
    • 本文所述的系统一般涉及具有主处理器和冗余子处理器的汽车主动前转向控制系统。 该系统提供了一种控制可变齿轮比主动前转向系统中的致动器电动机的电气和机械锁定的方式。 该方法使得副处理器能够经由主处理器电动锁定主动前转向执行器电动机以减少机械磨损或损坏可变变速比系统,如果主处理器在机械地锁定致动器之前不能电致锁定致动器电动机 发动机。 该系统还提供了对错误故障稳健的错误检测技术,并允许主动前导向系统在发生错误时安全地转换到故障安全模式。
    • 16. 发明申请
    • Method and apparatus for minimizing driver disturbance in a limited by-wire active steering system
    • 用于在有限的有线主动转向系统中最小化驾驶员干扰的方法和装置
    • US20090271070A1
    • 2009-10-29
    • US12108731
    • 2008-04-24
    • Ross FellerRobert R. Bolio
    • Ross FellerRobert R. Bolio
    • B62D6/00
    • B62D5/008B62D6/002B62D6/008
    • A method is provided for limiting a steering angle overlay applied by a steering actuator in a limited by-wire active front steering (AFS) system. The method includes determining a maximum rate limit for the steering angle overlay in order to minimize an undesired disturbance to the driver in the form of a torque and/or angle feedback while maximizing the rate of steering overlay allowed for a given set of vehicle operating conditions. The maximum rate limit is determined by a function of the input steering rate and braking level. A limited AFS system includes both steering and braking input devices, a steering actuator, and a controller having an algorithm. The controller uses the algorithm to calculate the maximum overlay rate limit and limits the steering actuator to the maximum overlay rate limit.
    • 提供一种用于限制由有限的有线前转向(AFS)系统中的转向致动器施加的转向角覆盖的方法。 该方法包括确定转向角覆盖物的最大速率限制,以便以扭矩和/或角度反馈的形式最小化对驾驶员的不期望的干扰,同时最大化给定的一组车辆操作条件允许的转向覆盖率 。 最大速率限制由输入转向率和制动电平的函数决定。 有限的AFS系统包括转向和制动输入装置,转向致动器和具有算法的控制器。 控制器使用算法计算最大重叠速率限制,并将转向执行器限制在最大重叠速率限制。
    • 20. 发明申请
    • Methods and Apparatus for an Active Front Steering Actuator
    • 主动前转向执行器的方法和装置
    • US20080116834A1
    • 2008-05-22
    • US11560876
    • 2006-11-17
    • Chandra S. NamuduriRobert R. BolioWillard A. Hall
    • Chandra S. NamuduriRobert R. BolioWillard A. Hall
    • G05B11/42
    • B62D5/008B62D5/046
    • An active front steering system includes a motor controller configured to compute a position error from a commanded position value and an actual position value, and then enter one of two modes—a commutation enable mode and a commutation freeze mode—depending upon the value of this position error. The commutation freeze mode applies when the absolute value of the position error is less than a predetermined threshold, and involves sending a set of signals to the motor's phase inputs such that commutation of the motor is prevented and a substantially constant motor hold torque is produced. The commutation enable mode applies when the absolute value of the position error is greater than or equal to the predetermined threshold, and corresponds to normal commutating operating mode.
    • 主动前转向系统包括电动机控制器,该电动机控制器被配置为根据命令位置值和实际位置值计算位置误差,然后根据该值的值,输入换向启用模式和换向冻结模式中的一种 位置错误。 当位置误差的绝对值小于预定阈值时,应用换向冻结模式,并且涉及向电动机的相位输入发送一组信号,从而防止电动机的换向,并且产生基本上恒定的电动机保持转矩。 当位置误差的绝对值大于或等于预定阈值时,适用换向启用模式,并且对应于正常换向操作模式。