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P-652 PILine® OEM piezomotor drives are ideal for OEM applications where space is limited and moved masses are small. These minute linear positioners can be used to replace classical drive elements like miniaturized motor/spindle systems or other linear motors, which P-652 outclasses with its speed of up to 80 mm/s. The basic advantages PILine® piezo linear motors offer compared to classical drives are:
- High velocities
- Compact design
- High push/pull and holding forces relative to the drive size
The integration of P-652 in an application is simple, because the moving slider and the piezo actuator are delivered assembled as a unit. All that remains is to provide for mounting the stator, affixing the load to the slider and making the electrical connections.
The motors are designed for moving small objects such as glass fibers, optical, micro- or electro-mechanical elements fast and precisely.
Working Principle
P-652 drives employ a new, patented, ultrasonic piezomotor drive developed by PI. The highly compact, integrated piezomotor can provide accelerations of up to 2.5 g and velocities of up to 80 mm/s together with high position resolution and—considering its length of only 9 mm—high holding force. Because the ceramic stator is pressed against the slider, piezomotor drives resist motion with an intrinsic holding force when the unit is at rest. The result is very high position stability without the heat dissipation common in conventional linear motors. During operation, the oscillating piezoceramic moves the slider over the length of the motor. There are no gears, leadscrews or other mechanical components to contribute play or backlash.
Operation with conventional controllers
The high-frequency oscillations for the PILine® motors are created by driver electronics, which can in turn be controlled by short pulses as low as 3 V. The output frequency of the driver electronics self-adjusts to the resonant frequency of the motor ceramic, so no individual tuning is necessary.
Notes
The products described in this document are in part protected by the following patents:
German Patent
No. 102004059429
International Patent
No. WO2006/027031A1
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