Patent ID: 8872508

Claim:
A half-bridge variable differential transformer position sensing system comprising: a transducer having a stator with an inductive coil having a center tap configured to provide an output signal, the transducer having an armature with a magnetically permeable core configured to move within the inductive coil, wherein such movement causes a change in the output signal; a first circuit configured to provide an excitation signal at one terminal of the inductive coil; and a microcontroller configured to calculate the degree of change in the position of the magnetically permeable core based on a comparison of a voltage of the output signal and a voltage of the excitation signal, the microprocessor being further configured to correct for variations in the voltage of the output signal due to the temperature of the transducer and due to non-linear effects on the output signal caused by movement of the magnetically permeable core; wherein no more than three electrical wires are used to operate the half-bridge variable differential transformer position sensing system.