| 摘要 |
<p>#CMT# #/CMT# The method involves connecting a signal processing unit (150) with stationary sensor elements (SE1, SE2) e.g. Hall sensors and magneto resistive sensors. A magnetic field of a transmitter magnet is detected by the sensor elements in order to provide sensor raw signals (U1, U2) for the signal processing unit, where the transmitter magnet rotates with a rotor shaft. Effect of a magnetic perturbation field is determined based on the sensor raw signals in order to produce compensation signals (SKC, SKS) from the effect, so that the sensor raw signals are impinged with the compensation signals. #CMT# : #/CMT# An independent claim is also included for a power steering comprising a device for perturbation field compensation by using a signal processing unit to determine rotational angle and/or rotation speed of a rotor shaft of an electromotor in a motor car. #CMT#USE : #/CMT# Method for perturbation field compensation by using a signal processing unit to determine rotational angle and/or rotation speed of a rotor shaft of an electromotor in a power steering of a motor car (all claimed). #CMT#ADVANTAGE : #/CMT# The method enables determining the magnetic perturbation field effect based on the sensor raw signals in order to produce the compensation signals such that the sensor raw signals are impinged with the produced compensation signals, thus enabling a flexible, simple and cost-effective perturbation field compensation while increasing quality of a sensor system and making resistant to the magnetic fields. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a device for executing a perturbation field compensation for producing adjusted sensor signals for a signal processing unit. SE1, SE2 : Sensor elements SKC, SKS : Compensation signals U1, U2 : Sensor raw signals 111, 112 : Logic elements 150 : Signal processing unit.</p> |
