pulse sampling

A two-dot sampling method of SPWM with nonsymmetrical rules was presented. It made the generation time and width of pulse closer to the nature sampling method, so the content of output humorous wave was reduced effectively.

提出一种两点式不对称规则SPWM工程采样法，使脉冲发生时刻和宽度更接近于自然采样法，从而可有效地降低输出谐波含量。

The other is of capstan. To produce servo controlling signal, frequency splitting, sampling and retaining, and pulse duration modulating are decisive techniques.

在录像机伺服控制过程中，信号分频、取样保持和脉宽调制占据主导地位，信号分频直接影响取样精度，而取样脉冲经脉宽调制后的方波信号作为反馈电压直接控制电机。

Owing to GPS clock, which has no accumulative error, and quartz oscillator, which is very stable, the time counting value is obtained without delay via hardware by combining high speed sampling and PPS ( Pulse Per-Second)-snapping.

利用GPS时钟无累计误差和高精度晶振频率稳定性高的特点，并将高速采样与秒脉冲捕捉有机结合，通过硬件方式无延时地捕捉秒脉冲以获取精确的时间计数值。

The simulated applications are in driving threshold, state overturn, light transmission rate, the switching and memory behavior of the FLCD for different drive voltage ( including amplitude, pulse wide and duty cycle) and sampling parameters.

通过引入多种激励源，控制激励信号的幅值、脉宽、占空比和取样参数，对FLCD的驱动阈值、状态翻转、透射率、响应时间和记忆行为进行了实时仿真。

The design used pulse cycle measurement to shorten sampling time, advance the delicacy, and make the metrical result precise and stable.

运用了脉冲周期测量法，使采样测量周期缩短，灵敏度提高，测量数据精确，读数稳定。