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]▲ 图1.2.1 测试结果※总结 ※
本文测试了 一个微型震动电机的伏安特性。 由于它的震动， 使得他的损耗随着转动频率的增加而快速上升。 这样， 对应的伏安特性就成呈现为一个大体上比例上升的关系。
● 相关图表链接:
- 图1.2.1 测试结果
