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嗨,
是否有BEMF补偿工具的在线版本?我有两个来自Sprakfun的电路板基于L6470,但我遇到的问题是从我认为能够获得的步进电机中获得性能。也许我有点密集,但看着BEMF公式,我得到的数字非常高,所以我必须把某些东西弄得乱七八糟。 如果没有该工具的在线版本,有人可能会通过一个计算示例吗?这样我就可以看到我出错的地方并能够将相同的计算应用到我拥有的其他电机上。 谢谢 #L6470 以上来自于谷歌翻译 以下为原文 Hi, Is there an online version of the BEMF compensation tool? I have a couple of boards from Sprakfun that are based on the L6470 but I'm having issues getting the performance out of the stepper motors that I thought I would be able to get. Maybe I'm a bit dense but looking at the BEMF formulas I'm getting numbers that are ridiculously high so I must be messing something up somewhere. If there isn't an online version of the tool could someone possibly walk through an example of the calculations? That way I could see where I'm going wrong and be able to apply the same calculations to other motors that I have as well. Thanks #l6470 |
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作为一个例子,这是我目前得到的基于BEMF公式的值:
INT_SPEED = 4 * Rm /2Ï€Lm * 2 ^ 26 * ttick where ttick == 250ns 电机规格 Rm = 1.65 Lm = 2.8 Im = 1.68 INT_SPEED =(4 * 1.65 /(2 * pi * 2.8))*(2 ^ 26)* 250 = 6293988307.48 这看起来是否正确?我见过的关于INT_SPEED的任何其他帖子似乎都使用了更低的数字。 谢谢 以上来自于谷歌翻译 以下为原文 As an example this is what I am currently getting as a value based on the BEMF formula: INT_SPEED = 4 * Rm/2Ï€Lm * 2^26 * ttick where ttick == 250ns Motor specs Rm = 1.65 Lm = 2.8 Im = 1.68 INT_SPEED = (4*1.65/(2*pi*2.8))*(2^26)*250 = 6293988307.48 Does this seem correct? Any of the other posts I've seen about INT_SPEED they seem to be using much lower numbers. Thanks |
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