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Stepper motor driver with feedback for positioning platform
Doležel, Michael ; Král, Vojtěch (oponent) ; Barcík, Peter (vedoucí práce)
This bachelor's thesis deals with designing and building a closed-loop control system for the altitude and azimuth axis of an opto-mechanical platform. The goal is to compare rotation sensors, and then design a driver for the stepper motor. The control system prototype was built using the Arduino platform, DRV8825 motor driver, NEMA-17 stepper motor, and AEAT-9922 hall effect rotational sensor. The prototype can rotate the stepper motor with a resolution of 0.056° which is the maximal accuracy of the DRV8825 driver with 1/32 microstepping mode. The board of the final driver was redesigned to include the SPI-4 interface for the AEAT-9922 hall sensor. This driver includes an L6470H stepper motor driver with 1/128 microstepping mode. This final board has a resolution of 0.014°.

Viz též: podobná jména autorů
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