Piezoelectric motors can be used in a variety of applications due to their exact movements and the compact nature of their design. Piezo motors can duplicate a motion many thousands of times without sustaining wear and tear the way a traditional motor design would. This is due to the deforming and responsiveness of the ceramic and other materials.

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silver microscope

Piezoelectric motors have been commercialized in various areas such as information technology, robotics, biomedical engineering, automotive, ecological and energy engineering. They are often preferred over electromagnetic type actuators, due mainly to suitability to miniaturization, lack of electromagnetic generation, higher efficiency.

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Piezo motors can be designed in either linear or rotary form and applied to host of applications as both single and complex multi-axis system that enable very precise, repeatable and reliable motion control. The small size of the piezo motor means they can be used in a variety of locations where other solutions may have limitations. In addition, because piezo motors are not magnetic that can often be used in applications that require the generation of strong magnetic fields environments, such as medical MRI machines.

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Piezo motors offer technical benefits and are now an affordable alternative to DC motors for rotary and linear motion requirements. They are direct drive and offer high precision with fast response times, plus good power density and light weight. With zero power to hold they offer the possibility of very efficient overall duty. They can be designed to offer low magnetic permeability for use in MRI fields, are immune from EM and RF interference, and have no emissions.

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Piezo motors require no power when inactive and maintain full blocking force and torque in this condition. At one revolution per minute a rotary motor requires less than 0.1 Watts and linear motors only need 0.06 Watts to drive at 1mm/second. This can lead to low overall power demand and is especially applicable in portable instrument applications with a battery supply; it can also be beneficial in reducing heat generation inside equipment. For the same power as a comparable sized stepper motor the piezo motor has a stall torque up to 10x greater for the same power rating.

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