使用LabVIEW FPGA模块中的CORDIC IP核，配置arctan(X/Y)算法，配置完成之后，IP核只有一个输入。我参考网上VHDL CORDIC IP核，说是将XY合并了，高位X低位Y。不知道在LabVIEW中如何将两个值X、Y合并成一个（X、Y均为定点数）。具体情况如下图：
2019-09-10 20:07
曲线上的对应关系和理论上能保持一致； 但是在计算phase的时候好像对不上了； 按照公式，phase=arctan（W/Wz）-arctan（W/Wp1）-arctan（W/Wp2）; 通过公式
2021-06-24 06:17
PMSM电机带编码器时，常规的方法是相电流经过PARK，CLARK变换后，进行ArcTan算出电流方向再进行补偿，是否可以直接用编码器反馈的位置信息进行补偿呢？
2024-04-08 07:53
& gt；库。我知道这两个方面的价值，可以使用ARCTAN来获得这个角度，但是当我包含数学的时候，我就用完了代码空间。这是可能的吗？如果是这样，我怎么做呢？谢谢。。。 以上来自于百度翻译 以下
2019-07-12 13:04
+/- 40mg的常数值。没有提及可用于更好地改变该值的任何因素（例如，降低范围会降低噪声密度）。当我们确定角度时，我们使用两个读数的arctan。对于45度最坏情况，这意味着我们将得到x = 0.707g和y
2019-05-29 07:13
电感性RLC串联电路，电容稍稍变大后+电路的功率因数变大？
2023-04-26 11:03
嗨，我正在使用86100D DCA-X和54754A TDR / TDT模块和N1021B差分探头来测量我的电缆。测量在阻抗模式下完成。我可以将阻抗读数转换为与我使用标记测量的电感和电容相关的电感和电容吗？请告知这是否可行？ 以上来自于谷歌翻译 以下为原文Hi, I'm using 86100D DCA-X with 54754A TDR/TDT Module and N1021B Differential probe to do measurement on my cables. Measurement is done in impedance mode. Can I convert the impedance reading to inductance and capacitance related to what I have measured using the marker? Kindly advise if this is feasible?
2019-08-01 13:48
您好，我正在使用N9020A Tektronix RSA5103A信号分析仪来获取信号频谱;我想做的是执行信号的IFFT。不幸的是，我获得的数据中缺少阶段信息。还有另一种获取频谱幅度和相位的方法，可能是IQ测量吗？有了IQ，我将获得什么类型的数据？那么可以用Matlab简单地进行IFFT吗？预先感谢您的帮助。干杯，塞丽娜 以上来自于谷歌翻译 以下为原文Hello, I'm using N9020A Tektronix RSA5103A Signal Analyzer to get the spectrum of a signal; what I would like to do is to perform an IFFT of the signal. Unfortunaltely the phase information is missing in the data that I acquired. There is another way to acquire magnitude and phase of the spectrum, maybe with an IQ measurement? With the IQ what type of data I'm going to acquire? Then it will be possible to simply do an IFFT with Matlab? Thank you in advance for your help. Cheers, Serena
2019-04-18 10:54
可能引起关注的人，感谢您对此帖的关注。我最近使用PNA-X N5245A来测量非比例值，如A，B，C，D。但是，当我们使用幅度（线性和非线性）时，我发现测量值是正确的。但是我们发现相应的实/虚值没有明确定义。您是否介意将转换公式从其幅度/阶段公布为实/虚。实际测得的信号是电压还是电流？最好，达 以上来自于谷歌翻译 以下为原文To Whom It May Concern, Thank you for your attention on this post. I recently use PNA-X N5245A to measure unratioed values, like A, B, C, D. However, I found the measurement values are correct when we are using magnitude (either linear and nonlinear). But we found the corresponding real/imaginary value is not clearly defined. Would you mind to disclose the conversion formula from their magnitude/phase to real/imaginary. And what is actually the measured signal is, the voltage or current? Best, Da
2019-05-28 08:30
本帖最后由 一只耳朵怪 于 2018-6-14 09:51 编辑 asin_report.c中的数据是float asin_expected[BUFFER_SIZE]=[1.570796, 1.393789, 1.320141, 1.263401, 1.215375, 1.172892, 1.134327, 1.098718, 1.065436, 1.034046, 1.004232, 0.9757544, 0.9484279, 0.9221048, 0.8966658, 0.8720123, 0.8480621, 0.8247454, 0.8020028, 0.7797828, 0.7580408, 0.7367374, 0.7158381, 0.6953120, 0.6751316, 0.6552721, 0.6357113, 0.6164289, 0.5974064, 0.5786270, 0.5600753, 0.5417370, 0.5235988, 0.5056486, 0.4878751, 0.4702678, 0.4528166, 0.4355124, 0.4183464, 0.4013104, 0.3843968, 0.3675981, 0.3509074, 0.3343180, 0.3178237, 0.3014185, 0.2850964, 0.2688521, 0.2526802, 0.2365756, 0.2205333, 0.2045484, 0.1886164, 0.1727327, 0.1568929, 0.1410927, 0.1253278, 0.1095943, 0.09388787, 0.07820469, 0.06254076, 0.04689218, 0.03125509, 0.01562564];asin_shared_data.cfloat CLAasinTable[]=[0.0, 1.0, 0.0, 0.000000636202, 0.999877862610, 0.007815361896, 0.000005099694, 0.999510644409, 0.015647916155, 0.000017268312, 0.998895919094, 0.023514960332, 0.000041121765, 0.998029615282, 0.031434003631, 0.000080794520, 0.996905974725, 0.039422875916, 0.000140631089, 0.995517492804, 0.047499840611, 0.000225244584, 0.993854840311, 0.055683712914, 0.000339579512, 0.991906765146, 0.063993984848, 0.000488979852, 0.989659972212, 0.072450958820, 0.000679263611, 0.987098979366, 0.081075891529, 0.000916805182, 0.984205946802, 0.089891150305, 0.001208627040, 0.980960476685, 0.098920384204, 0.001562502549, 0.977339379243, 0.108188712551, 0.001987071928, 0.973316400729, 0.117722933997, 0.002491973784, 0.968861907789, 0.127551759665, 0.003087995053, 0.963942521723, 0.137706074532, 0.003787242692, 0.958520694794, 0.148219231941, 0.004603341138, 0.952554219267, 0.159127386977, 0.005551660294, 0.945995657913, 0.170469875522, 0.006649579796, 0.938791682505, 0.182289647088, 0.007916796475, 0.930882303984, 0.194633761132, 0.009375683410, 0.922199974574, 0.207553958472, 0.011051710808, 0.912668537890, 0.221107321885, 0.012973941175, 0.902201997769, 0.235357042896, 0.015175614174, 0.890703070035, 0.250373315541, 0.017694840102, 0.878061473098, 0.266234382514, 0.020575425537, 0.864151902887, 0.283027765009, 0.023867860513, 0.848831624374, 0.300851714968, 0.027630504055, 0.831937595031, 0.319816937941, 0.031931014547, 0.813283013821, 0.340048646894, 0.036848083955, 0.792653161200, 0.361689022958, 0.042473551274, 0.769800358920, 0.384900179460, 0.048914992206, 0.744437830278, 0.409867752228, 0.056298910750, 0.716232177740, 0.436805274317, 0.064774696786, 0.684794109766, 0.465959540059, 0.074519565699, 0.649666934178, 0.497617226179, 0.085744766889, 0.610312179660, 0.532113122767, 0.098703445606, 0.566091493186, 0.569840443472, 0.113700678529, 0.516243664372, 0.611263845480, 0.131106395009, 0.459855210927, 0.656936015611, 0.151372169232, 0.395822366759, 0.707518998893, 0.175053263659, 0.322801460177, 0.763811905770, 0.202837883870, 0.239143420888, 0.826787304376, 0.235586468765, 0.142806299514, 0.897639596948, 0.274385149825, 0.031236880585, 0.977850174820, 0.320619535938, -0.098791845166, 1.069276441800, 0.376078169620, -0.251407364538, 1.174275392129, 0.443100143614, -0.431959397725, 1.295878193174, 0.524789871827, -0.647485610469, 1.438041695773, 0.625336471263, -0.907400624736, 1.606018804842, 0.750500589935, -1.224540947101, 1.806917563896, 0.908377657341, -1.616794995066, 2.050569262035, 1.110633894185, -2.109729648039, 2.350920816737, 1.374584721437, -2.740985157716, 2.728353889708, 1.726848242753, -3.567962877198, 3.213722960014, 2.210117561056, -4.682006534082, 3.855770086891, 2.896554011854, -6.236312386687, 4.735651038017, 3.916505715382, -8.505488022524, 5.997790945975, 5.526855868703, -12.026617159136, 7.922628470498, 8.298197116322, -17.983705080358, 11.123941286820, 13.741706072449, -29.488929624542, 17.203344479111, 27.202707817485, -57.466598393615, 31.741016484669, 83.158101335898, -171.803399517566, 90.149831709374];这些代码有什么用
2018-06-14 08:35
