PI USA Catalog: PiezoMike Miniature Actuators (2015)

Description

PI USA has released a catalog on high-precision miniaturized optomechanical piezo-motor actuators, dubbed the PiezoMike family.

 

Building upon decades of experience with motion control and nanopositioning, the  N-472 closed-loop PiezoMike actuator adds position feedback in a compact package, very similar to its N-470, open-loop sibling. Both actuators are based on a screw and ratchet mechanism, where a small piezo ceramic block performs the individual “clicks” based on the input to a controller.

 

Step size and frequency are variable and allow the user to control the desired speed and positioning resolution. The position sensor resolution of the N-472 actuator is below one nanometer. PiezoMike products simplify the automated adjustment of mechanical and optomechanical components. The motion ranges from 0.3 to 1 in. are standard, as well as vacuum capability.

 

The advantage of the piezo ratchet design is its very high stiffness and blocking force of 22 lb. Once a position is reached, the actuator is vibration-proof, shock-resistant, and long-term stable with no position drift or jitter.

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