Dr. Johannes Heidenhain Gmbh

Alexander Frank

Marc Oliver Tiemann

Martin Heumann

Lutz Rissing

Daniel Auer

Oliver Sell

An inductive angle measuring device includes a scanning element and a scale element having scale tracks. First and third scale tracks have an equal first number of scale structures, and a second scale track has a different number of scale structures. The scale tracks are arranged circumferentially and concentrically about an axis, such that the first scale track is located radially inwardly, the second scale track is located radially between the first scale track and the third scale track, and the third scale track is located radially outwardly. The scanning element includes receiver conductors by which the signals having angle-related signal periods can be generated. The first signal period is equal to the third signal period. An overall signal can be generated from the first signal and the third signal and can be combined with the second signal for determining absolute angle position information.

Inductive angle measuring device

An inductive position measuring device includes a scanning element and a scale element. The position measuring device is able to determine positions of the scanning element relative to the scale element in a first direction and in a second direction. The scale element includes graduation structures arranged next to one another along the first direction, and the graduation structures have a periodic characteristic with a second period length along the second direction. The scanning element has a first receiver track, a second receiver track, a third receiver track, and an excitation lead. Each of the three receiver tracks has two receiver circuit traces. The receiver circuit traces have a periodic characteristic with a first period length along the first direction, and the receiver tracks are arranged at an offset from one another in the second direction.

Inductive position measuring device

An inductive position-measuring device includes a scanning element and a graduation element, rotatable about an axis relative to the scanning element. The scanning element has exciter lead(s), a first receiver track, including receiver line(s), extending according to a first periodic pattern having a first period along a first direction, and a second receiver track, including receiver line(s). The graduation element includes a graduation track, extending in the circumferential direction and including a graduation period. An electromagnetic field generated by the exciter lead(s) with the aid of the graduation track is able to be modulated, so that an angular position is detectable with the aid of the receiver line of the first receiver track, and a position of the graduation element in the first direction relative to the scanning element is detectable with the aid of the receiver line of the second receiver track.

A sensor for measuring the position of a component that is displaceable relative to the sensor, includes a circuit board and a metal body. The circuit board includes a first region in which a detector is located, and a second region in which electronic components are located, which are electrically connected to the detector. The metal body includes a first layer having a first area as well as a second layer having a second area. The first region of the circuit board is fixed in place in the first area and the second region of the circuit board is fixed in place in the second area. The first layer and the second layer of the metal body are situated between the first region and the second region of the circuit board so that the first region is located in a first plane and the second region is located in a second plane.

Sensor for measuring a position

An inductive position-measuring device for absolute position determination includes a scale having a first measuring graduation extending in a measurement direction and a second measuring graduation disposed opposite to the first measuring graduation and extending parallel thereto. A scanner is disposed in a gap between the first measuring graduation and the second measuring graduation. The scanner is displaceable relative to the scale in the measurement direction for purposes of position measurement. The scanner includes a first coil arrangement for scanning the first measuring graduation and generating a first position-dependent scanning signal, and a second coil arrangement, disposed opposite to the first coil arrangement, for scanning the second measuring graduation and generating a second position-dependent scanning signal. At least one intermediate layer of soft magnetic material disposed between the first coil arrangement and the second coil arrangement.

Inductive position-measuring device for absolute position determination

A method a scale having an inductively scannable graduation, the scale including a sequence of graduation elements disposed in a measuring direction and a layer stack including a succession of metal layers. The succession of metal layers includes a ferromagnetic metal carrier layer and a graduation layer that forms the sequence of graduation elements. The carrier layer is disposed between the graduation layer and a metal substrate, and the metal substrate is dimensioned to definitively determine mechanical properties of the layer stack.

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Traunstein, Germany

Alexander Frank