Piezoelectric motors: Miniature technology with high torque

BOCA RATON, Fla. - Oct. 8, 2014 - PRLog -- The use of piezomotors are in various applications and products within biomedicine, optics, semiconductor and nanotechnology as well as industrial electronic and automotive systems just to name a few.

A piezoelectric motor or piezomotor is an electric motor that will change its shape when an electric field is applied. This effect produces ultrasonic vibrations that generates a rotary motion.

The word piezo comes from the Greek word piezein, which means to squeeze or press. The piezoelectrical effect is best described as the ability of some materials (e.g. piezo ceramics) to generate an electrical charge in response to a mechanical force (e.g. being squeezed or pressed). The piezoelectric effect is reversible, in that materials exhibiting the effect also exhibit the reverse and/or inverse piezoelectric effect. Thus they change shape or size when excited by an electric charge.

Some key advantages that piezomotors have over conventional electromagnetic motors include; high torque, exceptional resolution and fast reaction time. Additionally, piezomotors offer great potential for miniaturization and can be used without a gear drive in many applications. As such, they offer significant benefits in motion and flow control applications throughout diverse industries, including; medical device, aerospace, semiconductor, telecommunications, industrial and automotive.

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