【摘要】 为了定量研究动车组电源线对速度传感器信号线缆的串扰影响,提出了基于时域有限差分理论的耦合模型。基于该模型,在电源线上施加电快速瞬变脉冲群干扰,分析速度信号受扰后的失真情况,并通过仿真定量地分析了脉冲群的重复频率对速度传感器信号线内所传输的信号的影响,得出速度信号的误差与脉冲群的重复频率成线性关系的结论。更多还原

【Abstract】 A coupling model is provided based on finite difference time domain method for observing the crosstalk of power line to speed sensor cable quantitatively.During the electrical fast transient interference pulse being put on power line as disturbance sources, the distortion of speed signal is mainly analyzed by means of this model.At last, the simulation platform is developed in MATLAB to analyze the influence of pulse repetition frequency to speed signals in the signal transmission line.It is concluded that the error of the speed signal had a linear relation with the repetition frequency of the pulse group.更多还原