All of us know that motor is a machine which produces or imparts
motion, or in detail it is an arrangement of coils and magnets
that converts electric energy into mechanical energy and
ultrasonic motors are the next generation motors. In 1980,the
world's first ultrasonic motor was invented which utilizes the
piezoelectric effect in the ultrasonic frequency range to
provide its motive force resulting in a motor with unusually
good low speed, high torque and power to weight characteristics.
Electromagnetism has always been the driving force behind
electric motor technology. But these motors suffer from many
drawbacks. The field of ultrasonic seems to be changing that
driving force. DRAWBACKS OF ELECTROMAGNETIC MOTORS
Electromagnetic motors rely on the attraction and repulsion of
magnetic fields for their operation. Without good noise
suppression circuitry, their noisy electrical operation will
affect the electronic components inside it. Surges and spikes
from these motors can cause disruption or even damage in