Feedforward determination of a driving signal for a piezo actuator
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United States of America
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Jan 28, 2025
Grant Date -
Oct 20, 2022
app pub date -
Sep 8, 2020
filing date -
Sep 8, 2020
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Abstract
The invention relates to a method for determining a set-point voltage for a piezoelectric actuator system to achieve a desired optical response of the piezoelectric actuator system, such as an optical power. The method is based on a mathematical model, OP(V,T,n) describing a relationship between the applied voltage and the optical response. Calibration and use of the model involves determining a transition time count value. During use, e.g. at given intervals, the model is updated based on actual values of the temperature and the transition time count value. The set-point voltage required to achieve a desired optical response is determined based on the updated model and the set-point voltage is applied to the piezoelectric actuator.
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