AN1712

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AN1712The quality of life we enjoy today can easily be correlated to the
existence of the electric motor. Indeed， many of the products in our
homes either have motors in them or a motor was used to manufacture
them. For instance， we counted 114 motors in our house alone， not
including our cars or the kids toys.
However， the plethora of these electro-mechanical marvels in our
society constitutes an insatiable appetite for electrical energy. According
to the U.S. Department of Energy， 58% of the electricity generated in the
United States is consumed by electric motors[1]
， and no relief is in sight.
With a focus on energy consumption and environmental issues，
companies are scrambling for ways to put these motors on a "diet." One
solution which is becoming more and more palatable is electronic
control. If motor energy consumption continues along present trends，
the crucial question in the near future will not be "can we afford electronic
control，" but rather， "can we afford not to have electronic control."
The explosive growth of power semiconductors and processor
technology within the last decade has made electronic control of all
motor types more economically feasible. Microcontrollers in particular
have enjoyed a recent upsurge in popularity for motor control