I need to compare the agility of two piezo actuators. I saw a relation between rising time and resonant frequency in the following website: Tmin=1/3f0
https://www.piceramic.com/en/piezo-technology/properties-piezo-actuators/dynamic-operation/
According to the formula, an actuator with a higher resonant frequency is more agile.
I need a reference for this formula if it's correct or other relation and reference.
Thank you.
The rise time and resonance frequency depend on the load applied to the PZT.
The best way to measure the rise time of a PZT is to bond a calibrated FBG on the PZT in the direction of the axis one needs to test. Notice that each axis directib will respond diferently. To monitor the FBG displacement peak do not use a commercial FBG interrogator because they are frequency limited and to neasure a PZT rise time needsa much higher frequency.
To monitor the FBG you can use the twin FBG technique or a manually adjustable Fabry-Perot filter. If you need to know more about these techniques call me at [email protected]
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