Lab 7 - DC Motor with Shaft Encoder

Lab 7 - DC Motor with Shaft Encoder - San Jos State...

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Department of Mechanical and Aerospace Engineering DC Motor with Shaft Encoder 10/21/08 Report Author: Summary This report describes how DC motor with the encoder works with IRL520, a power MOSFET that controls power devices, to vary the rotational speed and the angle of a motor shaft. The speed of a DC motor was controlled with the Atmel ATmega 128 microcontroller to an encoder over Pulse-Width Modulation. We successfully illustrated that the difference in angular speed of the motor is directly related to the percentage of duty cycle between 20% - 80% that was output from the function generator. ___________________________ Results/Discussion First, we adjust the setting on the function generator to be 1 kHz square wave output and HIGH Z output termination. Moreover, the amplitude is set to 8 Vp-p with % Duty cycle between 20%-80%. ‘Duty cycle’ means that the capability of the device’s cycle to operate under a specified time period leaving the remaining rest.
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Lab 7 - DC Motor with Shaft Encoder - San Jos State...

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