震动微型电机的伏安特性-育师

简介：本文研究了微型震动电机的伏安特性，使用可编程电源DG1766测试了0-5V电压范围内电流变化。结果显示：电压低于0.4V时电流呈线性关系，超过0.4V后电机开始震动，电流随电压快速上升。与普通直流电机不同，震动电机的电流-电压呈非线性关系，表明机械振动导致损耗增加。测试数据表明，电机振动频率和机械能输出随电压提高，使工作电流显著增大。研究为理解微型震动电机的工作特性提供了实验依据。

关键词：震动电机，伏安特性

微型震动电机伏安特性

运行在水里面的直流电机

01震动电机伏安特性

一、简介

手边的一个微型震动电机，之前使用它用于焊接电路板的时候敲击电路板，帮助焊接的芯片对准细密的管脚。我很好奇，这个电机的伏安特性是什么样的。也就是随着输入电压的上升，他的工作电流是如何变化的。下面使用可编程直流电源 DG1766 输出电压和回读电流来测试一下这个微型振动电机的伏安特性。

二、测试结果

下面设置 DH1766 输出从 0V 逐步变化到5V的电压。通过网络回读对应的输出电流。这样便可以获得微型震动电机的伏安特性。在开始电压小于 0.4V的时候，电机尚未开始震动。输出电流与工作电压呈现线性关系。当输入电压超过 0.4V之后，电机开始震动。电流变随着电压持续上升。从测量结果来看，电流上升似乎随着电压的增加更快的上升。相比于之前测量的小型直流电机来看，工作电流与电压之间并不是比例关系。对于一个没有外接负载的直流电机，似乎它的工作电流与电压之间相比，变化并不大。但是，如果将直流电机放置在水里面。他的转动阻力增加，对应的工作电流就会随着电压的增加而迅速上升。由此也说明了对于微型震动电机，他的工作电压的增加，提高的对应的振动频率。电机输出机械能也增加，使得电机的工作电流也随之增加了。

fromheadmimport*fromtsmodule.tsvisaimport*vdim=linspace(0,5,100)cdim=[]forvinvdim:dh1766volt(v)time.sleep(1)c=dh1766curr()cdim.append(c)printff(v,c)tspsave("motor",vdim=vdim,cdim=cdim)dh1766volt(0)plt.plot(vdim,cdim,lw=3)plt.xlabel("Voltage(V)",color="steelblue",fontsize=24)plt.ylabel("Current(A)",color="steelblue",fontsize=24)plt.grid(True,which='both',linestyle='--',alpha=0.7)plt.tight_layout()plt.show()

vdim=[0.0000,0.0505,0.1010,0.1515,0.2020,0.2525,0.3030,0.3535,0.4040,0.4545,0.5051,0.5556,0.6061,0.6566,0.7071,0.7576,0.8081,0.8586,0.9091,0.9596,1.0101,1.0606,1.1111,1.1616,1.2121,1.2626,1.3131,1.3636,1.4141,1.4646,1.5152,1.5657,1.6162,1.6667,1.7172,1.7677,1.8182,1.8687,1.9192,1.9697,2.0202,2.0707,2.1212,2.1717,2.2222,2.2727,2.3232,2.3737,2.4242,2.4747,2.5253,2.5758,2.6263,2.6768,2.7273,2.7778,2.8283,2.8788,2.9293,2.9798,3.0303,3.0808,3.1313,3.1818,3.2323,3.2828,3.3333,3.3838,3.4343,3.4848,3.5354,3.5859,3.6364,3.6869,3.7374,3.7879,3.8384,3.8889,3.9394,3.9899,4.0404,4.0909,4.1414,4.1919,4.2424,4.2929,4.3434,4.3939,4.4444,4.4949,4.5455,4.5960,4.6465,4.6970,4.7475,4.7980,4.8485,4.8990,4.9495,5.0000]cdim=[0.0000,0.0043,0.0085,0.0126,0.0167,0.0208,0.0250,0.0164,0.0156,0.0158,0.0168,0.0172,0.0173,0.0180,0.0189,0.0197,0.0205,0.0217,0.0226,0.0237,0.0252,0.0267,0.0281,0.0292,0.0305,0.0319,0.0334,0.0346,0.0356,0.0363,0.0369,0.0376,0.0383,0.0395,0.0407,0.0420,0.0437,0.0455,0.0474,0.0490,0.0506,0.0517,0.0526,0.0535,0.0544,0.0555,0.0570,0.0586,0.0601,0.0617,0.0634,0.0649,0.0666,0.0683,0.0698,0.0714,0.0733,0.0754,0.0772,0.0789,0.0807,0.0826,0.0839,0.0857,0.0875,0.0894,0.0912,0.0929,0.0949,0.0966,0.0987,0.1002,0.1025,0.1046,0.1068,0.1091,0.1114,0.1135,0.1156,0.1183,0.1207,0.1232,0.1255,0.1277,0.1300,0.1324,0.1348,0.1371,0.1395,0.1419,0.1442,0.1466,0.1482,0.1509,0.1532,0.1556,0.1583,0.1602,0.1631,0.1653]