Differential angle position sensing using inductive position sensors

An apparatus to provide differential angle position sensing using inductive position sensors, the apparatus comprising:

• a static multilayered support structure positioned intermediate to a first rotatable target and a second rotatable target, the static multilayered structure comprising:
• a first integrated circuit coupled to a first primary winding and one or more first secondary windings, the first integrated circuit being associated with the first rotatable target, the first integrated circuit to induce a first alternating signal to the first primary winding to generate a first magnetic field that induces a first voltage in the one or more first secondary windings;
• and
• a second integrated circuit coupled to a second primary winding and one or more second secondary windings, the second integrated circuit being associated with the second rotatable target, the second integrated circuit to induce a second alternating signal to the second primary winding to generate a second magnetic field that induces a second voltage in the one or more second secondary windings.

A method to provide differential angle position sensing using inductive position sensors, the method comprising:

• inducing, via a first integrated circuit coupled to a first primary winding and one or more first secondary windings, a first alternating signal to the first primary winding to generate a first magnetic field that induces a first voltage in the one or more first secondary windings, the first integrated circuit being associated with a first rotatable target associated with an input shaft, the first rotatable target comprising a first sensor;
• and
• inducing, via a second integrated circuit coupled to a second primary winding and one or more second secondary windings, a second alternating signal to the second primary winding to generate a second magnetic field that induces a second voltage in the one or more second secondary windings, the second integrated circuit being associated with a second rotatable target associated with an output shaft, the second rotatable target comprising a second sensor;
• wherein a static multilayered support structure positioned intermediate to the first rotatable target and the second rotatable target comprises the first integrated circuit, the first primary winding, the one or more first secondary windings, the second integrated circuit, the second primary winding, and the one or more second secondary windings;
• wherein at least one of the first rotatable target and the second rotatable target includes an inner ring to reduce interference between the first magnetic field associated with the first sensor and the second magnetic field associated with the second sensor.