Rotational phase detection system

A system comprising:

• a sensor device comprising:
• a first sensor element configured to sense a magnetic field associated with a magnet and a rotatable object,
• wherein the first sensor element is configured to generate a first measurement signal based the sensed magnetic field;
• a second sensor element, configured to measure the magnetic field associated with the magnet and the rotatable object,
• wherein the second sensor element is configured to generate a second measurement signal based on the sensed magnetic field,
• wherein the second measurement signal is phase shifted relative to the first measurement signal;
• and
• a sensor controller configured to:
• receive the first measurement signal from the first sensor element;
• receive the second measurement signal from the second sensor element;
• generate a first fixed-calibrated channel from the first measurement signal;
• generate a second fixed-calibrated channel from the second measurement signal;
• generate a first self-calibrated channel from the first measurement signal;
• generate a second self-calibrated channel from the second measurement signal;
• determine an offset associated with the first measurement signal and an offset associated with the second measurement signal based on the first self-calibrated channel and the second self-calibrated channel, respectively;
• determine whether a vibration occurred based on the first fixed-calibrated channel or the second fixed-calibrated channel;
• and
• generate phase measurement information based on the offset associated with the first measurement signal, the offset associated with the second measurement signal, and whether the vibration occurred in the first measurement signal or the second measurement signal,
• wherein the phase measurement information indicates a phase of the rotatable object;
• and
• an electronic control unit configured to determine the phase of the rotatable object based on the phase measurement information.

A method, comprising:

• receiving, by a sensor device, differential measurement signals from at least two sensor elements,
• wherein the differential measurement signals correspond to measurements of a magnetic field and are phase-shifted to indicate a direction of rotation of a rotatable object;
• generating, by the sensor device, fixed-calibrated channels from the differential measurement signals,
• generating, by the sensor device, self-calibrated channels from the differential measurement signals;
• determining, by the sensor device, offsets associated with the differential measurement signals based on the self-calibrated channels;
• determining, by the sensor device, whether a vibration occurred within the differential measurement signals based on the fixed-calibrated channels;
• and
• providing, by the sensor device, phase measurement information based on the offsets and whether the vibration occurred,
• wherein the phase measurement information identifies a phase of the rotatable object.