Article ID Journal Published Year Pages File Type
7133515 Sensors and Actuators A: Physical 2018 6 Pages PDF
Abstract
This article extends the conventional permittivity change based displacement self-sensing technique for piezoelectric actuators to an impedance change based displacement-force self-sensing technique. The presented methodology evaluates changes in capacitance and resistance at an electrical resonance frequency and uses a third order polynomial fit to estimate displacement and force. Experimental validations show a mean error of 1.8%, and an error standard deviation of 1.9% for displacement and a mean error of 1.7%, and an error standard deviation of 1.8% for force.
Related Topics
Physical Sciences and Engineering Chemistry Electrochemistry
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