Trimble Jena Gmbh

Mario Fischer

Steffen Laabs

Michael Vogel

Bernd Donath

Wolfgang Hahn

Matthias Nowak

Michael Kötzing

Thomas Korn

Andreas Pruvost

An optical measurement system comprises a first housing body and a second housing body which can be rotated relative to the first housing body about a second axis of rotation, wherein the second housing body contains a measurement telescope, an inner roller bearing support fixed to the second housing body and protruding into the first housing body; an outer roller bearing support fixed to the first housing body; a drive disc fixed to the inner roller bearing support; wherein a motor having a motor shaft is attached to the first housing body in such a way that the motor shaft or a wheel fixed to the motor shaft is positioned on the drive disc and is pressed against said disc by a spring force orientated transversely to the second axis of rotation, and wherein the motor shaft or the wheel is coupled to the drive disc in a frictional fit.

Optical measuring system

A method and an apparatus for determining the quality of a gearing system is described. The method includes the steps of setting a sequence of target angles of rotation of a first gear wheel, measuring for each of the target angles of rotation an output angle of rotation of a second gear wheel, and calculating a plurality of theoretical output angles of rotation. The method also includes obtaining angle of rotation differences between the plurality of output angles of rotation and the plurality of theoretical output angles of rotation, forming a sequence of cumulative values, and determining, based on the sequence, a first amplitude value, a second amplitude value or a third amplitude value.

Method and apparatus for determining quality of a gearing system

A motor drive apparatus for a surveying instrument and a control method for controlling a surveying instrument enables a fast rotation of an instrument axis with high angular resolution. The motor drive apparatus for a surveying instrument includes a first motor for rotating an instrument axis. The first motor includes a stator and a rotor having a rotation axis and a plurality of step positions relative to the stator. The motor drive apparatus also includes a mounting unit for mounting the first motor so as to be pivotable around the rotation axis and an adjusting unit for rotating the stator of the first motor around the rotation axis.

Motor drive apparatus and control method for a surveying instrument

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Jena, Germany

Mario Fischer