The present invention concerns a method for checking the setting of an angular position sensor of a rotor of a drive system of a vehicle, said drive system comprising a physical angular position sensor intended to measure the angular position of the rotor relative to a stator of a rotating electric machine of the drive system, such as an electric machine of an electric or hybrid drive system, said method comprising, during an initialisation phase of the drive system, the electric machine not rotating: estimating the angular position of the rotor by means of a method injecting a high-frequency current or voltage signal; measuring the angular position of the rotor, by the physical angular position sensor; calculating the difference between the estimated angular position of the rotor and the measured angular position of the rotor; detecting an anomaly in the setting of the physical angular position sensor if said difference is greater than a predefined threshold.

A position sensor device includes position sensor elements for generating analog sense signals. A digitization circuit is provided for a digital signal representative of the input phase based on the analog sense signals and a digital processing unit. An output signal is indicative of the position based on the first output of the processing unit. The processing unit comprises an error signal generator for computing an error signal indicative of a phase difference between the digital signal and a feedback signal. A digital filter filters the error signal to generate the first output. A feedback path provides the feedback signal based on the first output and a filter selector to select a filter to be applied from different filters. At least one input on which a common filter circuit operates is scaled differently for each of the different filters to select different filter bandwidths.

A rotary sensor arrangement is configured to be used with a rotatable magnetic source and comprises a first and a second pair of magnetic field sensors, each pair arranged symmetrically with respect to rotation axes and providing respective sensor values. An evaluation unit determines a first sum value corresponding to a sum of the sensor values of the first pair, and a second sum value corresponding to a sum of the sensor values of the second pair. The evaluation unit further determines a difference value corresponding to a difference between the first and the second sum value and compares the difference value or a value derived thereof to a threshold value. Based on the comparison result, it is determined whether a failure status of the sensor arrangement is present.

A field-sensor device comprises first and second field sensors disposed in corresponding different first and second orientations, each responsive to an external field to produce corresponding first and second sensor signals. One of or both the first and second sensor signals are converted to equivalent comparable sensor signals in a common orientation and compared to determine a faulty field sensor. If a faulty field sensor is determined, a faulty sensor signal is produced or, if a faulty sensor is not determined, an output sensor signal responsive to the first, second or comparable sensor signals is produced. Evaluation of the direction of differences between the comparable sensor signals can determine which of the first and second field sensors is faulty.

The invention relates to a device and a processing method for a camshaft sensor (1) of the type comprising a toothed camshaft wheel (2) and an opposite sensing element (3) able to detect a tooth front, comprising the following steps: detection of a new tooth front (k) by said sensing element; calculation of a rotational speed (Wk) of the camshaft wheel (2) for the new tooth front (k); comparison with the rotational speed (Wk−1) of the camshaft wheel for the preceding tooth front (k−1) detected by said sensing element; if the variation in the rotational speed (Wk) of the camshaft wheel (2) between the new tooth front (k) and the preceding tooth front (k−1) is low, the new tooth front (k) is validated, otherwise the new tooth front (k) is rejected.

A magnetic field sensor includes one or more magnetic field sensing elements operable to generate a respective one or more magnetic field signals indicative of a magnetic field associated with an object, and one or more channel detector circuits coupled to receive one or more of the one or more magnetic field signals. The one or more channel detector circuits are configured to generate a respective one or more channel signals. The sensor also includes an output protocol circuit coupled to receive the one or more channel signals. The output protocol circuit is configured to generate a sensor output signal comprising distinguishable constant current levels associated with the one or more channel signals.

Embodiments, systems, and methods for error detection in crankshaft tooth encoding for a crank pulse wheel of a vehicle are provided. In some embodiments, a system for crankshaft tooth encoding includes a read module, a buffer module, an error module, and a position module. The read module identifies a tooth type for N number of teeth in a sliding buffer based on at least one tooth characteristic. The buffer module calculates a buffer value for the sliding buffer corresponding to a tooth represented in the sliding buffer. The error module detects an error associated with a tooth of the crank pulse wheel and calculates a revised buffer value based on the error. The position module determines an angular position of the crank pulse wheel based on the revised buffer value. The position module broadcasts the angular position to one or more vehicle systems of the vehicle.

A rotary encoder includes a detection device for detecting malfunction of the rotary encoder, a rotor, a stator, a shaft having a bearing configuration, and an axial bushing internally connected to the bearing configuration and rotatably arranged in a housing of the rotary encoder. A spring device is arranged for pre-stressing the bushing and the bearing configuration. A distancing arrangement is arranged to change an axial distance between the rotor and the stator by rotation of the bushing resulting from malfunction of the bearing configuration and by creating increased distance between the rotor and stator. The increased distance is sufficient to reduce detectability of angular positions of the shaft, as detected by the rotary encoder, to a level below a predetermined threshold.

The invention relates to a control unit (6) for evaluating the sensor signal of a sensor (2), comprising at least one first sensor connection (21) and a second sensor connection (22) for connecting the sensor (2), wherein the second sensor connection (22) is connected to a short-circuit protection circuit (23), which is arranged between the second sensor connection (22) and a grounding (3), and which comprises a switchable transistor (7), by way of which the grounding (3) of the second sensor connection (22) can be interrupted.

A sensor device includes a sensor for sensing amounts of a physical quantity, such as an environmental attribute, and providing sensor signals formed in response to the sensed physical quantity. A diagnostic test circuit provides multiple diagnostic test signals each representing a desired response to a particular amount of the physical quantity. A signal circuit selects the sensor signal or the diagnostic test signal and forms a signal circuit output. A reference circuit provides a calibrated reference signal corresponding to a threshold amount of the physical quantity. A comparator receives and compares the calibrated reference signal and the signal circuit output to form a comparison signal. A control circuit controls the signal circuit, reference circuit, and diagnostic test circuit and receives the comparison signal to output a sensor device sensor signal or sensor device diagnostic signal.