会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Tracking radar system
    • 跟踪雷达系统
    • US4843398A
    • 1989-06-27
    • US178854
    • 1980-08-05
    • William Houston
    • William Houston
    • G01S13/68
    • G01S13/685
    • In a tracking radar system target glint and multipath sometimes produce signals which falsely indicate high acceleration rates of the target. These signals cause the boresight of the antenna to be driven away from the direction in which the target actually lies.To avoid this problem, received signals from a receiver are fed through a switch which is opened whenever the target appears to have an acceleration or velocity above a threshold value. The threshold value is varied so that the proportion of the time during which the switch is open is kept approximately constant. Thus, if there is a period during which a large number of high acceleration or high velocity signals appear from the receiver (for example is there is a very high noise level) the switch still remains closed for a certain proportion of the time period. This ensures that the tracking system never loses the target while also ensuring that false tracking due to target glint and multipath is minimized.A circuit is included so that, when the switch is open the antenna is not brought to a complete halt but rather is allowed to continue to move in the direction that it was moving before the switch was operated.
    • 在跟踪雷达系统中,目标闪烁和多路径有时会产生错误地指示目标的高加速度的信号。 这些信号导致天线的视轴被驱动远离目标实际位于的方向。 为了避免这个问题,来自接收机的接收信号通过开关被馈送,只要目标似乎具有高于阈值的加速度或速度,该开关就被打开。 阈值变化,使得开关打开的时间的比例保持近似恒定。 因此,如果存在从接收器出现大量高加速度或高速度信号的时段(例如,存在非常高的噪声电平),则开关仍然保持关闭该时间段的一定比例。 这样可以确保跟踪系统不会丢失目标,同时确保由于目标闪光和多路径引起的错误跟踪最小化。 包括一个电路,使得当开关断开时,天线没有完全停止,而是允许在开关被操作之前继续沿其移动的方向移动。
    • 10. 发明申请
    • Electric ARC welding system
    • 电弧焊接系统
    • US20050092726A1
    • 2005-05-05
    • US11006180
    • 2004-12-07
    • Russell MyersWilliam Houston
    • Russell MyersWilliam Houston
    • B23K9/073B23K9/025B23K9/08B23K9/10B23K9/173
    • B23K9/091B23K9/0253B23K9/1056B23K9/1068B23K9/1735
    • An electric arc welding system for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding arc with a second current waveform between a second electrode and a workpiece by a second power supply as the first and second electrodes are moved in unison along a welding path, where the first and second power supply each comprising a high speed switching inverter creating its waveform by a number of current pulses occurring at a frequency of at least 18 kHz with the magnitude of each current pulse controlled by a wave shaper and the polarity of the waveforms is controlled by a signal. The first AC waveform has a positive portion substantially different in energy than its negative portion and/or has either a different shape and/or a synthesized sinusoidal portion.
    • 一种电弧焊接系统,用于通过第一电源和第二AC焊接电弧在第一电极和工件之间产生具有第一电流波形的第一AC焊接电弧,并且在第二电极和工件之间具有第二电流波形第二 作为第一和第二电极的电源沿着焊接路径一致地移动,其中第一和第二电源各自包括高速开关逆变器,其通过以至少18kHz的频率出现的多个电流脉冲产生其波形, 由波形整形器控制的每个电流脉冲的幅度和波形的极性由信号控制。 第一AC波形具有与其负极部分相比基本上不同的能量的正部分和/或具有不同的形状和/或合成的正弦部分。