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19 条记录 (耗时 0.028 秒)

    Structure for and method of error compensation
    2.
    发明授权
    Structure for and method of error compensation 失效
    错误补偿的结构和方法

    公开(公告)号：US3974364A

    公开(公告)日：1976-08-10

    申请号：US554314

    申请日：1975-02-28

    申请人： David W. Sallberg ,  Walter E. Meyer

    发明人： David W. Sallberg ,  Walter E. Meyer

    IPC分类号： G01M7/02 ,  G01M99/00 ,  G01M7/00 ,  G01R19/04

    CPC分类号： G01M99/00 ,  G01M7/022

    摘要： Structure for and method of compensating for a mechanical frequency response structure induced phase shift of an alternating electrical command signal in a closed loop control circuit so that magnitude errors independent of phase errors may be utilized in the control circuit. The structure includes a mechanical structure to be controlled having a mechanical frequency response to the cyclic command signal, an electronic frequency response circuit for producing a phase shift in the command signal substantially the same as that produced by the mechanical frequency response structure over the frequency range of the command signal, and structure for summing the error signal from the mechanical frequency response structure and from the electronic frequency response circuit to provide a magnitude error only signal, and means for providing an output signal when the selected error signal is outside of a permissible error signal range. The structure may also include switch means so that a combined magnitude and phase error signal may be substituted for the magnitude only error signal to again provide an output signal when the combined error signal is outside of a permissible error signal range.

    摘要翻译： 用于补偿机械频率响应结构的结构和方法在闭环控制电路中引起交流电命令信号的相移，从而可以在控制电路中利用与相位误差无关的幅度误差。 该结构包括要被控制的机械结构，其具有对循环命令信号的机械频率响应;电子频率响应电路，用于产生与频率范围内的机械频率响应结构基本相同的命令信号的相移 以及用于将来自机械频率响应结构和电子频率响应电路的误差信号相加的结构，以提供仅限于幅度误差信号的装置，以及用于当所选择的误差信号在允许的范围之外时提供输出信号的装置 误差信号范围。 该结构还可以包括开关装置，使得组合的幅度和相位误差信号可以代替仅限于幅度的误差信号，以便当组合误差信号在容许误差信号范围之外时再次提供输出信号。

    Peak detector
    3.
    发明授权
    Peak detector 失效
    峰值检测器

    公开(公告)号：US3973197A

    公开(公告)日：1976-08-03

    申请号：US490913

    申请日：1974-07-22

    申请人： Walter E. Meyer

    发明人： Walter E. Meyer

    IPC分类号： G01R19/04 ,  H03K5/00

    CPC分类号： G01R19/04

    摘要： Structure for and a method of detecting peaks in an electric signal comprising circuits for and the steps of converting a selected one of a plurality of analog signals into a current digital signal, comparing the developed digital signal with a digital signal previously developed from the selected analog signal and stored, and replacing the previously developed and stored digital signal with the current digital signal when the current digital signal is greater than the previously developed and stored digital signal and of the same polarity, and providing for readout of the currently stored digital signal in either analog or digital form.Direct reading of the digital output in terms of standard engineering units is provided for. Also, the analog input signal may be directly read at the output of the peak detector and the peak detector may be utilized as a volt meter with a direct current signal passed directly into a digital output portion of the peak detector. The peak detector may be operated automatically or manually and upper and lower peak signals may be reset manually.

    摘要翻译： 检测电信号中的峰值的结构和方法，该电信号包括用于将多个模拟信号中的一个被选择的一个模拟信号转换为当前数字信号的步骤，将所开发的数字信号与从所选模拟 信号和存储，并且当当前数字信号大于先前开发和存储的数字信号并且具有相同极性时，用当前数字信号替换先前开发和存储的数字信号，并且提供当前存储的数字信号的读出 模拟或数字形式。

    Dockboard with a tread plate lock mechanism
    5.
    发明授权
    Dockboard with a tread plate lock mechanism 失效
    带有踏板锁定机构的导轨板

    公开(公告)号：US4662021A

    公开(公告)日：1987-05-05

    申请号：US623920

    申请日：1984-06-25

    申请人： James P. Hagen ,  Walter E. Meyer

    发明人： James P. Hagen ,  Walter E. Meyer

    IPC分类号： B65G69/28 ,  E01D1/00

    CPC分类号： B65G69/2829

    摘要： An independent dockboard of the type adapted to be mounted in a pit in a loading dock, the dockboard including a main frame, a ramp pivotally mounted on the frame and including a tread plate assembly mounted for telescopic movement into and out of the ramp, the tread plate assembly including a tread plate mounted on a frame with a number of wheels for supporting the assembly for movement on the ramp, the tread plate assembly being pivoted about the axis of the wheels, a lift frame pivotally mounted on the main frame and operatively positioned to engage the ramp, a hydraulic piston and cylinder assembly operatively engaging the left frame and a second hydraulic piston and cylinder assembly operatively connected to move the tread plate assembly into and out of the ramp, and an over center toggle link assembly to lock the tread plate against the ramp.

    摘要翻译： 一种适于安装在装载基座中的凹坑中的类型的独立的平板电脑板，该船坞包括主框架，可枢转地安装在框架上的坡道，并包括安装成用于伸缩运动进入和离开斜坡的踏板组件 胎面板组件，其包括安装在具有多个轮的框架上的胎面板，所述胎面板用于支撑所述组件以在所述坡道上移动，所述胎面板组件围绕所述轮的轴线枢转;枢转地安装在所述主框架上并且可操作地 定位成接合斜坡，可操作地接合左框架的液压活塞和气缸组件和可操作地连接以将踏板组件移入和移出斜坡的第二液压活塞和气缸组件，以及过中心肘节连杆组件， 踏板抵靠斜坡。

    Dockboards
    8.
    发明授权
    Dockboards 失效
    码头板

    公开(公告)号：US4718136A

    公开(公告)日：1988-01-12

    申请号：US889803

    申请日：1986-07-23

    申请人： Patrick W. Fisher ,  James P. Hagen ,  Walter E. Meyer

    发明人： Patrick W. Fisher ,  James P. Hagen ,  Walter E. Meyer

    IPC分类号： B65G69/28 ,  E01D1/00

    CPC分类号： B65G69/2823

    摘要： A dockboard comprising a ramp assembly, a frame for supporting the ramp assembly for pivotal movement in a pit formed in a loading dock, a hydraulic piston-cylinder assembly mounted on the bottom of the pit in the loading dock for pivoting the ramp assembly with respect to the supporting means, a lip assembly pivotally mounted on the free end of the ramp assembly, a hydraulic piston-cylinder assembly mounted on the ramp assembly for pivoting the lip assembly to an extended position forming a continuation of said ramp assembly, the ramp assembly including a tread plate and a plurality of hinge plates mounted in a parallel spaced relation on the tread plate, each hinge plate including an ear, and a stop bar mounted on the end of the ramp assembly in the path of travel of the ears for limiting the pivotal movement of the lip assembly.

    摘要翻译： 一种船坞板，包括斜坡组件，用于支撑斜坡组件的框架，用于在形成在装载基座中的凹坑中枢转运动;液压活塞 - 气缸组件，其安装在装载基座中的凹坑的底部，用于使斜坡组件相对于 支撑装置，枢转地安装在斜坡组件的自由端上的唇形组件，安装在斜面组件上的液压活塞 - 气缸组件，用于将唇缘组件转动到形成所述斜坡组件的延续部的延伸位置，斜坡组件 包括胎面板和在胎面板上以平行间隔的关系安装的多个铰链板，每个铰链板包括一个耳朵，以及一个安装在斜面组件的端部上的止动杆，用于限制耳朵的行进路径 唇部组件的枢转运动。