Microcontroller Based DC Motor Drive
Nehal Desai, Rich Foley and Reed Murphy
Advisor: Dr. Ronald Jetton
Microprocessors are becoming exceedingly valuable in controlling and
regulating various types of systems. Today, microprocessor technology is
capable of handling many complex processes with great speed and efficiency.
The major theme of this project was to see if a microprocessor could efficiently
simplify a DC motor drive system. Using Pulse Width Modulation and a microcontroller,
our design is able to control the speed of a 1/3 HP DC motor. Implementing
a user friendly interface with an RPM reference command and an optical
tachometer feedback, we utilized Motorola's 68HC11 to operate as a proportional
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