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P-871 High-Deflection Closed-Loop, PICMA® Multilayer Piezoelectric Bender Transducer(LVPZT)
P-871 transducers are unique closed-loop piezoelectric benders based on the PL122 to PL140 PICMA®-series multilayer bender-actuators. Equipped with high-resolution position feedback sensors they provide better linearity, accuracy and repeatability than other piezo bender actuators on the market. P-871 benders achieve longer positioning ranges than typical stacked piezoelectric actuators, up to 1.6 mm, and response times in the millisecond range.
Long Lifetime and High Performance
Closed-Loop Position Control Provides Higher Accuracy
Application Examples:
PICMA® Bender actuators are superior to conventional actuators in high-endurance situations. They show substantially longer lifetimes both in static and dynamic operation, even in harsh environments. The monolithic, ceramic-insulated design provides better humidity protection than polymer-film insulation. Diffusion of water molecules into the insulation layer is greatly reduced by the use of cofired, outer ceramic encapsulation.
P-871s are ideal devices for scanning, positioning and beam deflection applications and provide much better accuracy, stability and repeatability than conventional open-loop actuators. The special bender design allows the direct application of a strain gauge sensor to the surface without the need for a polymer insulation layer in between. The advantages are faster response, reduced phase lag and precise position control with non-linearity of <0.5%. The settling time for a small-signal step (up to 1% nominal travel) to an accuracy of better than 1% is between 10 ms (P-871.112) and 30 ms (P-871.140).
Wire bonding, Fiber optic switches, Beam deflection, Scanning of optical components , Alignment of optical components,
, etc.