AIREX: Multilayer Piezoelectric Stack Actuator.
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This paper deals with the design, modeling and analysis of implementing a Multilayer Piezoelectric Vibration Energy Harvesting (ML PZT VEH) Mechanism in the vehicle suspension. The principle of work of the proposed ML PZT VEH mechanism is reducing the relative motion of the suspension, amplifying the applied force to the PZT by a specific design of mechanism and combining a single layer PZT.
A ML actuator is a stack of N ceramic layers, which are electrically connected in parallel. As the electrodes used for actuation are the same as those used for poling, the polarity of an applied electric field aligns with the polarization in each layer, and thus all piezoelectric thickness expansions have the same sign and additive.
The approach is applied to an amplified piezoelectric actuator without load. The amplified actuator is based upon low voltage piezoelectric ceramic multilayer stacks for systems requiring lighter actuators with temperature stability and high resonance frequency.
Piezo stack actuators are equipped with a highly reliable, multi-layer, low-voltage, piezoelectric transducer stack. They are internally pre-loaded by a mechanical spring and feature high resonant frequencies, making them ideal for high load, dynamic nanopositioning applications.
NPA Piezo Stack Actuators are equipped with a highly reliable, multi-layer, low-voltage, piezoelectric transducer stack. They are internally pre-loaded by a mechanical spring and feature high resonant frequencies, making them ideal for high load, dynamic applications. Sub-nanometer positioning resolution; Ultra-high load capacity.
This paper presents results on mechanical behavior of multilayer piezoelectric stack actuators for use in active member under combined electro-mechanical Loadings. The objective of this study is to investigate the behavior of piezoelectric materials and to determine the properties necessary for design of such actuator systems. Two types of experiments are performed: influences of the preload.