搜索 - 科创网

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内容：每一级用220uF 450V的电容，STM8做时序触发，当时做调整的时候，发现很难调，因为可用加速区间很窄，然而一旦调节到了这个延迟组之后，初速度就会比较稳定，哪怕稍微改动初速度改动也不明显了。,而真正影响初速度稳定性的因素只有末级的线圈只要级数够长，末级给弹丸总体速度造成的影响就微乎其微了，可以认为整体稳定。,然而处于最佳速度延迟的前面一点也可以让负反馈成立，这样就会在最佳稳定状态，存在两个最佳极点？,这可能是一个不稳定因素，需要进一步讨论、另外一点就是，负反馈的存在会让整体线圈的误差放大，导致总体效率永远低于最佳值。

内容：引用 13920545020:用散热片可以解决的问题基本电路也算正常，如果电路不合理加多大的散热片也没用，做电子的最主要的是工作稳定，效果适中就可以了，电弧1米工作不稳定也没什么意义还有你的市电版本是半波整流结构吗

内容：直流电机通过改变输入电压，可以在较大范围内调整转速，但在超低转速运行时，受负载变化影响，转速会不稳定，并且输出扭矩较小，很容易停转，为了克服以上缺点，常采用2种方式实现：1、采用齿轮组减速，通过调整齿轮减速比,，可以获得稳定低转速和非常大的扭矩，特点是机械结构复杂，电路结构简单，减速模式下无法获得较高转速输出。,2、采用伺服驱动模式，通过旋转编码器获得电机转速电子信号，输入到伺服驱动器，通过电路改变驱动电机占空比，达到调速目的，特点是机械结构简单，电路复杂，调速性能良好，扭矩输出较大，转速稳定，可以在较大范围内实现调速

约找到 5781 条结果，耗时 0.305 秒

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当前账号的附件下载数量限制如下：