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Spindle motor (three-phase asynchronous AC motor) is an important part of Computer Numerical Control (CNC) Printed Circuit Board (PCB) milling machine, which plays role to engrave the copper layer based on the PCB pattern design. To perform the engraving processes, it is necessary to adjust the spindle motor speed in accordance with the PCB material used. This paper presents the results of implementing...
Stepper motor is widely used as controlling and driving machine in opening loop controlling system. As high speed moving, stepper motor must have rising and falling process avoiding losing step and over step. In this paper, based on analyzing and comparing some controlling graph, it gives a LabVIEW-based stepper motor control method and the composition of the control system, and making the soft controlling...
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