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热词
    • 75. 发明授权
    • Load variation detector
    • 负载变化检测器
    • US5675094A
    • 1997-10-07
    • US585431
    • 1996-01-11
    • Robert D. KlauberErik B. Vigmostad
    • Robert D. KlauberErik B. Vigmostad
    • B60G17/019G01L1/12G01L3/10G01L5/22G01L3/02
    • G01L5/225B60G17/019G01L1/125B60G2202/11B60G2202/24B60G2202/312B60G2204/11B60G2400/30B60G2400/60B60G2400/91B60G2401/12B60G2401/172B60G2600/02B60G2600/08B60G2600/602B60G2600/604B60G2800/80B60G2800/802F16F2230/08
    • A method and apparatus to detect variations in load by comparing signals related to, but not necessarily accurately correlated with, stress/strain states of a load transmitting member. In one embodiment, a first signal is obtained relating to the time rate of change of stress in the member produced by a first loading event or series of events. A second signal is obtained which relates to the time rate of change of stress in the member produced by a second loading event or series of events. The first and second signals are compared to detect significant variations in loading. Each of the two signals may be a composite of other signals. A magnetostrictive sensor may preferably be used to obtain the signals relating to the stress in the load transmitting member. The load may be applied force, torque, stress, strain, or deflection. In another embodiment, the time rate of change of a single segment of an analog signal related to, but not directly correlated with, stress is used to determine rapid changes in load. In yet another embodiment, a statistical value derived from a plurality of signals is used to determine variation in load. Applications comprise internal combustion engine and driveline torque variation diagnostics, brake pedals, and suspension systems.
    • 通过比较与负载传输构件的应力/应变状态相关但不一定准确相关的信号来检测负载变化的方法和装置。 在一个实施例中,获得关于由第一加载事件或一系列事件产生的成员中的应力变化的时间变化率的第一信号。 获得第二信号,其涉及由第二加载事件或一系列事件产生的构件中的应力变化的时间变化率。 比较第一和第二信号以检测负载中的显着变化。 两个信号中的每一个可以是其他信号的组合。 优选地可以使用磁致伸缩传感器来获得与负载传递部件中的应力有关的信号。 负载可能会施加力,扭矩,应力,应变或偏转。 在另一个实施例中,模拟信号的单个段的变化时间变化与压力相关但不直接相关,用于确定负载的快速变化。 在另一个实施例中,使用从多个信号导出的统计值来确定负载的变化。 应用包括内燃机和传动系扭矩变化诊断,制动踏板和悬架系统。