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In addition to computer-aided simulation technology, a practical experimental and metrological investigation of motion devices, machine components, mechanisms and robots is often indispensable. The Institute of Mechanism Theory, Machine Dynamics and Robotics has extensive metrological equipment and expertise to investigate typical problems on technical equipment and to quantify and analyze motion characteristics. With a well-founded evaluation of the measurement results and an analysis of the movement and vibration behaviour, many problems can be solved in a targeted manner. Some metrological systems and example applications are described below, just contact us, if you have a problem where a measurement or experimental investigation could help, then we will clarify the possibilities.


3D coordinate measuring system


Our optical 3D coordinate measuring system from Metris enables static and dynamic measurements. For this, in addition to a space probe with numerous measuring probes, a laser line scanner is available. Dynamic systems are measured using particularly lightweight light-emitting diodes that are attached to the measurement object.

  • Measuring volume of 17 m3
  • Measurement accuracy of up to 60 μm
  • Measuring frequency of 1000 Hz

The different configurations allow the high-frequency and precise measurement of geometry elements (distances, bores, axes, cylinders, etc.) and moving coordinate systems or fixed points on the object. Interfering movements can be filtered out, for example, by defining a virtual coordinate system on the frame. Common areas of application are the calibration of industrial robots, the measurement of robot trajectories or the geometry measurement of components and mechanisms.


Indoor GPS


Our optical Nikon iGPS is a modular measuring system for large volume components, working areas and production halls. All geometry elements and, for example, the position of robots and driverless transport systems can be measured in a common reference frame. An unlimited number of handheld probes or tracking sensors can be operated simultaneously within the system, whereby the redundant arrangement of the transmitters is used to compensate for occlusions and visual obstructions.

  • Unlimited measuring volume with uniform accuracy
  • Point localization accuracy up to 200 μm
  • Measuring frequency of 40 Hz


Component and geometry measurement


The use of a high-precision laser line scanner allows the measurement of components and motion devices as a point cloud. Form and position tolerances can be determined and quantified in comparison with existing CAD data. In particular, we can also quantify geometric properties and dimensions and, for example, derive and quantify relevant kinematic parameters. Thus it is also possible to determine virtual references and only indirectly measurable dimensions and to use them for further measurements.


Static and dynamic position measurement


The available coordinate measuring technology allows us to measure static and dynamic positions and dimensions both for highly dynamic movements and for large working areas. The kinematic dimensions and the accuracy characteristics of various industrial robots and handling systems were determined in exemplary measurement projects. The mobile use of the iGPS system makes it possible to measure large-volume working areas and movements, for example to determine the trajectory of working machines for specific configurations and control approaches.


High-precision laser distance sensors can be used to determine static deformations of any structures or to determine unbalances and geometric deviations for rotating components.


Institute of Mechanism Theory, Machine Dynamics and Robotics

RWTH Aachen University

Eilfschornsteinstraße 18

52062 Aachen



Phone: +49 241 80 95546

Fax:      +49 241 80 92263


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