Sensor arrangement

A sensor arrangement for determining a rotational angle of a shaft (4), the sensor arrangement comprising:

• a shaft (4) having at least one locking ring (12) embodied as a sinusoidal ring, wherein an outer face (40) of the sinusoidal ring has a radius of r(φ)=r0+rA sin(nφ/360°), where r0 is a radius of a circle that defines the zero crossing points of the sinusoidal ring, rA is a constant which determines the amount the radii of the sinusoidal ring varies from the radius r0, n is a number of complete periods, and φ/360° is an angle that varies between 0° and 360°, the at least one locking ring (12) arranged on the shaft (4), and
• at least one first fixedly installed magnetic sensor (32) which is assigned to the at least one locking ring (12) and, during a rotation of the shaft (4), senses a magnetic field (58) which is influenced by the at least one locking ring (12), wherein n is an integer.