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PZT sensors problem?
Two PZT wafers are used as sensor elements. The wafers are connected in series and they are poled in the same direction. There is a resistor R and inductor L in the circuit. The strain at each PZT sensor element can be different and is denoted as: S1, S2. Each sensor element has the same capacitance, C. Assume that the strain occurs in only one direction (a 1-D problem). Assume the sensor elements are poled through the thickness and connected the same way and in series. Derive the differential equation for the voltage V output due to strain inputs at the PZT sensors.
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