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How to estimate the resonance frequency of piezoelectric actuator stacks

When designing your piezo-based application, it can be useful to know the frequency response in order to be able to choose the actuator matching your requirements. We have added a short introduction explaining how to estimate the first resonance for piezo actuator stacks.
How to estimate the resonance frequency of piezoelectric actuator stacks

Technical support online or direct contact
We want noliac.com to be the preferred forum for information about piezo technology, and how to use piezo products. Therefore, we have quality information in the tutorials section on the website, and always seek to add relevant information. Charles Mangeot, Senior R&D Engineer at Noliac, explains:

- The frequency response is a central parameter to know when designing a dynamic application using actuator stacks. Since it is a common request from our customers, we have added an introduction about this as a part of our technical support on our website. It will help customers estimate the first thickness and the first radial resonance of our standard stacks. In addition to this introduction online, customers can always contact us directly about this or any other piezo related question.

Example: NAC2013-H12 actuator plate stack
To estimate the first resonance frequency of an actuator plate stack, you need to know the type of material. In this example, the plate stack is made of the material NCE51, which is a soft doped material. This particular material has a frequency constant (N3) of 1200Hz.m. The stack has a cross section of 5x5mm and height of 12mm. To estimate the first thickness resonance (Ft), use this formula:

Ft=N3/H

H is the height of the actuator stack.

Therefore, the first thickness resonance in this case is 100kHz

More information?
If you have any questions about how to estimate the resonance frequency, or if you have any other any other piezo related question, please contact us using our Request for Quote form or contact sales.

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