Ams Ag

Kurt Riedmueller

Thomas Oswald

Josef Janisch

Gerhard Oberhoffner

Ruggero Leoncavallo

Dominik Ruck

Stephan Michelitsch

Simone Sabatelli

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.

Rotary sensor arrangement and method for determining a failure status of such arrangement

A position sensor device comprises at least two Hall elements () and a signal evaluation circuit () that is coupled on its input side to the at least two Hall elements () and is designed to provide a digital position signal (ANS). Moreover, the position sensor device () comprises a processing unit () comprising a loop filter () that is coupled on its input side to the signal evaluation unit (). The processing unit () is designed to adaptively control a filter parameter of the loop filter () during operation.

Position sensor device and method for providing a filtered position signal

A position sensor device to determine a position of a moving device comprises a detection unit to detect a signal generated by the moving device and an evaluation unit to determine a first position (&#x3b1;) specifying the position of the moving device at a first time (t). An error distance determination unit determines a velocity of the movement of the moving device and at least one error distance (&#x3b1;, &#x3b1;, &#x3b1;) specifying a distance by which the moving device moves on between the first time (t) and a second time (t) in dependence on the velocity and a propagation delay time (T). A position correction unit is configured to determine a corrected position (&#x3b1;) in dependence on the at least one error distance (&#x3b1;, &#x3b1;, &#x3b1;) and the first position (&#x3b1;).

Position sensor device to determine a position of a moving device

A sensor arrangement comprises at least one magnetic-field sensor (SM). A signal-processing unit (PROC) is set up to determine a minimum signal (MIN) and a maximum signal (MAX) of the magnetic-field sensor (SM) over the full scale range (FSR) of the sensor arrangement. An adjustment circuit (DSPL) is set up to generate a correction signal (COR) as a function of the minimum and maximum signals (MIN, MAX). A first combination means (ADD) couples the first magnetic-field sensor (SM) on the input side to the adjustment circuit (DSPL) and connects the magnetic-field sensor (SM) on the output side to a signal output (OUT).

Sensor arrangement and method for operating a sensor arrangement

A sensor arrangement comprises at least a first magnetic-field sensor (SM) and a second magnetic-field sensor (SM). A signal-processing unit (PROC) is set up to determine a minimum signal (MIN) and a maximum signal (MAX) of the first or second magnetic-field sensor (SM, SM) in the full scale range (FSR) of the sensor arrangement The first or second magnetic-field sensor (SM, SM) can be selected by means of a selection means (MOV) depending on the minimum and maximum signal (MIN, MAX).

A sensor arrangement comprises a first, a second and a third magnetic field sensor that are arranged along a curved principal direction. A first combination means is connected to the first and second magnetic field sensors and a first channel signal can be derived from the signals of the first and second magnetic field sensors by the first combination means. A second combination means is connected to the first, second and third magnetic field sensors (SM, SWM, SM. A second channel signal is derived by the second combination means from signals of the first, second and third magnetic field sensors. An evaluation unit that is connected to the first and second combination means is set up to derive an end position of a magnetic source movable relative to the sensor arrangement as a function of the first and second channel signals.

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Unterpremstaetten, Austria

Kurt Riedmueller