Patent ID: 9109925
Filing Date: 2015-08-18
Classification: G01D

Abstract:
1. A magnetic angle sensor system for determining a shaft angle comprising at least one pivotable shaft pivotable about a Z-axis, wherein: a. said pivotable shaft is provided with a magnetic field generator configured to create a magnetic field; b. said pivotable shaft is provided with a magnetic sensor able to measure a component of said magnetic field lying along an X-axis that is perpendicular to said Z-axis and a component of said magnetic field lying along a Y-axis that is perpendicular to said X-axis and said Z-axis; c. said pivotable shaft is provided with a distorting component configured to pivot with said pivotable shaft, said distorting component configured to distort said magnetic field so that said magnetic field is non-symmetric with respect to said Z-axis; d. said magnetic sensor measures a background field in the absence of any current in said magnetic field generator, and said magnetic sensor measures a magnetic field in the presence of a current in said magnetic field generator, such that said shaft angle of said pivotable shaft can be determined from a difference between said measurement in the presence of a current in said magnetic field generator and said measurement in the absence of a current in said magnetic field generator.