The asymmetric regular sampling method SPWM ( Sine Pulse Width Modulation) is studied and then applied in the three-phase matrix AC to AC converter. 分析了不对称规则采样法正弦脉冲宽度调制SPWM(SinePulseWidthModulation)波生成原理,并把不对称规则采样法SPWM调制应用于三相AC-AC矩阵式变换器。
The circuit simulation shows that the symmetric strobe design ensures that the sampling interval is 100 ps and the sampling gate bandwidth is 4.4 GHz when the strobe pulse width is 100 ps. The gate can be used in multi-beam ultrashort laser pulses sampling. 电路仿真结果表明,对称的选通设计保证了选通脉宽为100ps时,取样间隔也为100ps,取样门带宽为4.4GHz,可应用于多路超短激光脉冲取样。
In the paper, the author discovers a novel method of generating the PWM wave in real time by microprocessor. The method gets the pulse width by regular sampling, and generates the PWM wave by using the asynchronous pulse width modulation of a quasi& sinusoidal wave. 本文揭示了一种新型的用软件实时生产PWM波的方法,它采用规则采样法获得脉宽值,采用准正弦波异步调制生成PWM波。
It is difficult to analyse the sampling Control system with pulse width modulation. 对宽度调制的脉冲系统的分析比较困难。
This system is a sampling control system with pulse width modulatin. 该系统是一个宽度调制的脉冲控制系统。