This work presents the first micro-sized axial flow fan driven by a scratch drive actuator rotary motor. The eight fan blades are mass assembled using the surface tension of molten 4 mil diameter 63 Sn/37 Pb manufactured solder spheres. A sample size of 27 blade angles was measured with a mean assembly angle of 107.24/spl deg/. The actual mean of the manufactured solder sphere diameters was measured at 4.89 mils, yielding a, model predicted, mean blade assembly angle of 107.71/spl deg/. At resonance, the SDA motor can be driven at 50 RPM forward with a 2 kHz AC voltage of 30 V/sub 0.P/, and at 100 RPM reverse with a 3 kHz signal. For non-resonant frequencies, the SDA motor can be driven in a forward direction with linear speed control up to 180 RPM using driving signals from 75-150 V/sub 0.P/. Fluid movement by the fan was also experimentally demonstrated.
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机译：这项工作提出了第一个由刮擦驱动致动器旋转电机驱动的微型轴流风扇。使用熔融的4 mil直径63 Sn / 37 Pb制造的焊球的表面张力，对八个风扇叶片进行大规模组装。测量了27个叶片角的样本大小，平均装配角为107.24 / spl deg /。所制造的焊料球直径的实际平均值在4.89密耳下测量，得出模型预测的平均刀片组装角为107.71 / spl deg /。在共振时，可以以30 V / sub 0.P /的2 kHz交流电压以50 RPM的正向驱动SDA电机，并以3 kHz信号以100 RPM的反向驱动SDA电机。对于非谐振频率，可以使用75-150 V / sub 0.P /的驱动信号，以高达180 RPM的线性速度控制正向驱动SDA电动机。还通过实验证明了风扇的流体运动。
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