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首先让我们谈谈什么是超声波,大家知道人耳能听到的声音频率为20Hz----20KHz,低于20Hz的声波为次声波,人耳是听不到的,高于20KHz的声波为超声波,人耳也是听不见的。超声波之所以被广泛用于...

前言此方法可以将1个数字IO口，转化成1路模拟量输出，分辨率>14bit，信噪比>30dB这样的指标，已经超过了一些古老的8位DAC例如DAC0832，也大大超过了PWM能实现的性能。而且，这个方法对...

由于在之前文章中已经讲述了使用RPA来设计液体火箭发动机推力室，所以在讲述设计推力室方面将不会那么详细。想详细了解如何设计推力室并导入到建模软件solidworks当中可以参考我以前的文章。作者水平有...

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