Piezomotors “Ultrasonic Motors”

Prepared by: Jaime Fernandez
Department of Electrical and Computer Engineering
Utah State University


abstract

“Piezoelectricity is the ability of certain crystals to generate a voltage in response to applied mechanical stress. The word is derived from the Greek piezein, which means to squeeze or press. The piezoelectric effect is reversible in that piezoelectric crystals, when subjected to an externally applied voltage, can change shape by a small amount. T ....etc

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How it works ...



The Piezoelectric effect in piezoceramics converts electrical field to mechanical strain. Under special electrical excitation drive and ceramic geometry of Nanomotion motors, longitudinal extension and transverse bending oscillation modes are excited at close frequency proximity. The simultaneous excitation of the longitudinal extension mode and the transverse bending mode creates a small elliptical trajectory of the ceramic edge, thus achieving the dual mode standing w ....etc

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can u give any details about DSP based speed estimation of single phase induction motors ....etc

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Prepared by:
Jaime Fernandez


Piezomotors “Ultrasonic Motors”
Piezoelectric Notions
“Piezoelectricity is the ability of certain crystals to generate a voltage in response to applied mechanical stress. The word is derived from the Greek piezein, which means to squeeze or press. The piezoelectric effect is reversible in that piezoelectric crystals, when subjected to an externally applied voltage, can change shape by a small amount. The deformation, about 0.1% of the original dimension in PZT, is ....etc

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Prepared by:
Jaime Fernandez


Piezomotors “Ultrasonic Motors”
Piezoelectric Notions
• “Piezoelectricity is the ability of certain crystals to generate a voltage in response to applied mechanical stress. The word is derived from the Greek piezein, which means to squeeze or press. The piezoelectric effect is reversible in that piezoelectric crystals, when subjected to an externally applied voltage, can change shape by a small amount. The deformation, about 0.1% of the original dimension in PZT ....etc

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Trends in appliance motors

Permanent magnet synchronous motors beginning to replace split-phase induction motors in appliances , a means of boosting efficiency while reducing part costs. PM synchronous motors work at variable speeds and may become part of the appliance structure itself , perhaps eliminating the need for separate gearboxes and belt drives used to harness power from induction motors.


read more http://books.googlebooks?id=ywiBVSnYm6IC&pg=PA72&lpg=PA72&dq=Trends+in+appliance+Motors&source=bl&ots=H6rzIscaoM&sig=xaVyCZPQ4Nu ....etc

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CAN-based Synchronized Motion Control for Induction Motors

Abstract:

A control area network (CAN) based multi-motor synchronized motion control system with an advanced synchronized control strategy is proposed. The strategy is to incorporate the adjacent cross-coupling control strategy into the sliding mode control architecture. As illustrated by the four-induction-motor-based experimental results, the multi-motor synchronized motion control system, via the CAN bus, has been successfully implemented. With the emplo ....etc

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73. RF CONTROL OF INDUCTION MOTORS AND OTHER INDUSTRIAL LOADS
# can I know more information about that Topic?
# and where can this project apply? :idea::D ....etc

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send clear details about this project ....etc

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Prepared by:
Jaime Fernandez


Piezoelectric Notions
“Piezoelectricity is the ability of certain crystals to generate a voltage in response to applied mechanical stress. The word is derived from the Greek piezein, which means to squeeze or press. The piezoelectric effect is reversible in that piezoelectric crystals, when subjected to an externally applied voltage, can change shape by a small amount. The deformation, about 0.1% of the original dimension in PZT, is of the order of nanometers, but nevertheless ....etc

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