Inductive displacement sensor with a moveable measuring head

Inductive displacement sensor, said sensor comprising:

• a magnetically permeable measuring head arranged displaceably and/or rotatably on an elongated support,
• at least one measuring loop arranged on the elongated support whose geometric shape changes in response to a longitudinal/rotational displacement of the magnetically permeable measuring head along the elongated support, and
• at least one exciter loop arranged on the elongated support, by means of which exciter loop a magnetic flux can be generated in the magnetically permeable measuring head,
• at least two measuring loops are provided, at least one first measuring loop is designed geometrically in such a way that a response, changing essentially linearly along the inductive displacement sensor, to a magnetic excitation of the magnetically permeable measuring head emerges with a longitudinal/rotation displacement of the magnetically permeable measuring head along the elongated support, and at least one second measuring loop is formed geometrically in such a way that a periodically changing response to a magnetic excitation of the magnetically permeable measuring head emerges with a longitudinal/rotational displacement of the magnetically permeable measuring head along the elongated support,
• wherein at least two measuring loop pairs are provided, a at least one first measuring loop pair has at least two triangular measuring loops arranged symmetrically to one another and a at least one second measuring loop pair has at least two measuring loops formed to be sinusoidal or co-sinusoidal, and
• wherein a geometric shape and a position of the measuring loops of the at least one first measuring loop pair and of the measuring loops of the at least one second measuring loop pair are chosen in such a way that a sum of output values of the measuring loops of the first measuring loop pair is constant and that a sum of squares of output values of the measuring loops of the second measuring loop pair is substantially constant.