Patent ID: 7426829

Claim:
A turbocharger assembly comprising: a position sensor that comprises a phase detector, one or more windings to supply phase information to the base detector, a resonator circuit configured to interact with at least one of the one or more windings of the resonator circuit and an output to output position information; a movable member that comprises the resonator circuit positioned thereon or therein, the movable member selected from the group consisting of a rotatable member, a translatable member and a translatable and rotatable member; a center housing that comprises the one or more windings, an opening configured to receive the movable member to position the resonator circuit with respect to the one or more windings, one or more hydraulic fluid paths, an actuator to control a hydraulic fluid valve to thereby control hydraulic fluid pressure in the hydraulic fluid paths, and a piston configured to move the movable member in response to a change in hydraulic fluid pressure; and a controller to adjust geometry of a variable geometry turbine wherein the controller comprises an input to receive the position information output by the position sensor and an output to output a signal to actuate the actuator to control the hydraulic fluid valve and, in turn, the position of the movable member to thereby adjust geometry of the variable geometry turbine.