Sensorless position control of active-material actuators

    公开(公告)号:US09829304B2

    公开(公告)日:2017-11-28

    申请号:US13898682

    申请日:2013-05-21

    CPC classification number: G01B7/003

    Abstract: A system for estimating a position associated with a pre-tensioned active material without using a position sensor. The system includes an active material being transformable between a first state and a second state in response to a pre-determined stimulus and pre-tensioned to at least a pre-determined threshold, yielding the pre-tensioned active material. The system also includes a processing unit configured to perform various operations. The operations include obtaining a value for electrical resistance of the pre-tensioned active material. The operations also include estimating, using the electrical resistance determined, the position associated with the pre-tensioned active material.

    Dynamic safety shields for situation assessment and decision making in collision avoidance tasks
    2.
    发明授权
    Dynamic safety shields for situation assessment and decision making in collision avoidance tasks 有权
    防撞任务情况评估和决策的动态安全盾

    公开(公告)号:US09280899B2

    公开(公告)日:2016-03-08

    申请号:US13960667

    申请日:2013-08-06

    CPC classification number: G08G1/166 G08G1/163

    Abstract: A system and method provided on an ego-vehicle for assessing potential threats in a vehicle collision avoidance system, and/or to plan safety-allowed vehicle trajectories for vehicle path planning. The method includes detecting objects in a predetermined vicinity around the ego-vehicle, and determining the relative velocity or other measure between each detected object and the ego-vehicle. The method defines a virtual dynamic safety shield around each detected object that has a shape, size and orientation that is determined by predetermined properties related to the current state of traffic around the ego-vehicle. The method also defines an action grid around the ego-vehicle. The method assesses the threat level of a potential collision between each detected object based on how the shield for that object and the action grid interact. The interaction between the shields and the grid induces actions aimed at aborting collisions and allows for trajectory planning.

    Abstract translation: 在自动车辆上提供的用于评估车辆碰撞避免系统中的潜在威胁和/或计划用于车辆路径规划的安全允许车辆轨迹的系统和方法。 该方法包括检测自身车辆周围的预定附近的物体,以及确定每个被检测物体与自我车辆之间的相对速度或其他测量。 该方法定义围绕每个被检测物体的虚拟动态安全盾,其具有通过与自身车辆周围的交通状况相关的预定属性确定的形状,尺寸和方向。 该方法还定义围绕自身车辆的动作网格。 该方法基于该对象的屏蔽和动作网格如何相互作用来评估每个检测到的对象之间的潜在冲突的威胁级别。 盾牌和网格之间的相互作用引发了旨在中止碰撞的行动,并允许进行轨迹规划。

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