Turbulent shear flows 5

Turbulent shear flows 5
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湍流剪切流 5

DOI:
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发表时间:
1987
期刊:
影响因子:
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通讯作者:
M. Hayakawa
M. Hayakawa
中科院分区:
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文献类型:
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作者:
R. Metcalfe;F. Hussain;S. Menon;M. Hayakawa

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电流源具有连接到步进电动机的多个相绕组中的每个相绕组的一端的第一端,所述相绕组的另一端通过可控制操作的开关连接到电流源的第二端,所述开关以特定的顺序被激励,并且具有可控制变化的占空比信号,其中所述信号的占空比控制电动机的功率、速度和旋转。
A source of electric current has a first terminal connected to one end of each of a plurality of phase windings of a stepping motor whose other ends are connected via controllably operable switches to a second terminal of the current source, the switchesare energized in particular sequence and with controllably variable duty cycle signals wherein the duty cycle of the signals controls the power, speed and rotation of the motor.