The feasibility of a planned application can be roughly assessed by comparing the application requirements with the characteristics of piezo stacks. The two most important performance parameters are displacement and force. The size of the piezo stack directly influences these two key performance parameters: displacement and force.
The force-generating capability is proportional to the cross-sectional area of the piezo stack.
The displacement is proportional to the length of the piezo stack.
The capacitance C C and the maximum operating voltage U U are the most important electrical parameters. The voltage applies to a series, while the capacitance directly depends on the size of the stack. Below is a table showing typical characteristics of piezo stacks.
Comparison of requirements with performance data
Before designing your application, you can use the characteristics of the delivery program as an initial reference and compare your requirements with the performance data:
Analysis of a concept for a solution with piezo stacks in three steps
Select stack dimensions. Sizing and selection of the power supply (peak current, average current or power, thermal management)Integration (enclosure, preloading, interfaces)
Identification of Load Cases
Identify the load case and select the load-displacement type that best reflects it. Analyse the requirements for the piezo to derive the corresponding measures. Select the force curve that best matches your application to identify your load case in more detail in the next page "load cases".
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