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- Biotechnology
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- Metrology
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PILine® Linear Motors – Small, Fast, Highly Effective
Despite their small size, PILine® linear motors generate high driving and holding forces.
PILine® motors have a new, patented, ultrasonic drive developed by PI. The core piece of the system is a piezoceramic plate, which is excited to produce high-frequency eigenmode oscillations. A friction tip attached to the plate moves along an inclined linear path at the eigenmode frequency. Through its contact with the friction bar, the moving part of the mechanics drives forward or backwards. With each oscillatory cycle, the mechanics executes a step of a few nanometers; the macroscopic result is smooth motion with a virtually unlimited travel range.
High Speed and Acceleration
PILine® piezomotor drives can provide accelerations of up to 5 g and speeds of up to 500 mm/s, together with high resolution and high holding force. Because the ceramic stator is pressed against the slider, holding forces are generated when the motor ist powered down. The result is very high position stability without the heat dissipation common in conventional linear motors.
Accessories for Easy Integration
PILine® piezomotors require a special drive electronics to generate the ultrasonic oscillations for the piezoceramic element. The drive electronics is available as OEM board, stand-alone device or integrated controller and therefore not inclued in the delivery. PI offers friction bars with different lengths.
Long Lifetime
PI has over 30 years experience with piezo technology and nanopositioning. PILine® drives offer high precision and reliability, with over 20,000 hours MTBF. This is because PILine® piezo linear motor drives have no mechanical components such as shafts and gears which can cause failures in conventional motors.
Note
The products described in this document are in part protected by the following patents:
US Pat. No. 6,765,335
German Patent No. 10154526
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PDF Catalog Datasheet
