Systems, devices, and methods for determining a position of a target using an inductive position sensor are described. The inductive position sensor may include a rotor, two or more excitation coils, and two or more receive coils. Each of the coils and the rotor may be inductively coupled. The two or more receive coils may be configured to generate a received voltage which can be approximated by a sine waveform function of twice the rotor's position. The inductive position sensor may include a resonant component. The resonance component may be connected to one of the two or more excitation coils or the rotor. An integrated circuit may be configured to determine the position of the rotor based on the two or more received voltages.

Excitation windings 2X, 2Y and a detection winding configured in a multipolar mode are disposed coaxially with a fixed body, a plurality of sets (M1, M2) of intermediate rotating windings M1 . . . configured by a pair of winding portions Mx1, My1 . . . configured by the multipolar mode and with predetermined electrical phases D made different are disposed coaxially with a rotating body, and the winding portions in the same phase (Mx1 and Mx2, My1 and My2) of the plural sets of the intermediate rotating windings M1, M2 are connected so as to form closed circuits H . . . , respectively.

A device for measuring a relative rotation speed and/or a relative angular position between a first rotating element (2) and a second rotating element (3). The device includes a structure for generating a magnetic field rotating at a magnetic rotation speed representing a rotation speed of the first rotating element and a sensor (5) mounted to rotate and adapted to produce from the rotating magnetic field a measurement signal representing the relative rotation speed and/or the relative angular position. The device also has a processor (11) positioned on the static part and intended to acquire the measurement signal. A transmitter is adapted to transmit the measurement signal to the processor from the sensor.

In a method of determining a current position of an output element connected to an electric stepper motor, a current position of a rotor of the stepper motor is determined by a rotor position sensor. The determination of the current position of the rotor is refined as a function of information about a currently active phase of the stepper motor, and the current position of the output element is calculated in response to the refined determination of the current position of the rotor.

A device for measuring a relative rotation speed and/or a relative angular position between a first rotating element (2) and a second rotating element (3). The device includes a structure for generating a magnetic field rotating at a magnetic rotation speed representing a rotation speed of the first rotating element and a sensor (5) mounted to rotate and adapted to produce from the rotating magnetic field a measurement signal representing the relative rotation speed and/or the relative angular position. The device also has a processor (11) positioned on the static part and intended to acquire the measurement signal. A transmitter is adapted to transmit the measurement signal to the processor from the sensor.

An inductive sensor device has a scale body having a multiplicity of conductor strip loops arranged in a measurement direction in at least one scale line. A sensor unit is moveable along the scale body and has one coil group for each scale line, the coil group comprising a transmitter coil for producing a transmitter signal and at least one receiver coil. Each coil group provides at least one receiver signal for an evaluation unit for determination of an absolute relative position of the sensor unit relative to the scale body. At least one of the scale lines has at least one modulating section, within which the impedances and/or the apparent resistances of conductor strip loops change from one end of the modulating section to the other, whereby the at least one receiver signal is modulated with regard to its phase position relative to the transmitter signal.