Amplified piezoelectric actuator | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-17

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Amplified_piezoelectric_actuator


00:00:39 1 Single-cell actuator
00:01:57 2 Multi-cell actuator
00:02:22 3 Lever arm amplification
00:03:19 4 Applications
00:04:50 5 External links



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SUMMARY
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Amplified piezoelectric actuators are specific actuators using piezoelectric materials as active material and have a specific design to overcome traditional limitations of classical direct piezoelectric actuators, the limited stroke. As classical piezoelectric materials have a strain of 0.1%, it is practically impossible to reach significant stroke without displacement amplification (1 mm displacement would require 1 meter of piezoelectric material). The solution to reach middle range stroke is to use an amplification system.