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Novel dynamic measuring methods for industry


In August 2008, the project "Model-based calibration of accelerometers" which is supported by the Federal Ministry of Economics and Technology (BMWi), was completed successfully. The objective was to transfer to industry novel measuring procedures and methods of data analysis for the calibration of accelerometers as have been developed at PTB over the last few years.

Contrary to the present calibration methods, the new procedures allow the determination of the input/output behaviour of a transducer - also for transient signals - which dominate in industry. To this end, the input/output behaviour is modelled by a linear system whose parameters are determined by dynamic calibration measurements. The new methods are of particular significance to industry, because thanks to them, especially in the area of high intensity shock measurement data from different calibration facilities has become comparable for the first time.

The project was promoted within the scope of the MSTQ transfer programme of the BMWi which supports the technology transfer of innovative measuring methods to SMEs, and it was carried out jointly with SPEKTRA Schwingungstechnik und Akustik GmbH Dresden ("SPEKTRA Vibration and Acoustic Systems Engineering"). SPEKTRA develops and offers measurement facilities for the dynamic calibration of accelerometers. The integration of the novel procedures into SPEKTRA’s measurement facilities has been completed successfully and the new methods are now offered world-wide.

Contact person:

Thomas Bruns, PTB, FB 1.3, AG 1.31, E-Mail: thomas.bruns@ptb.de
Clemens Elster, PTB, FB 8.4, AG 8.42, E-Mail: clemens.elster@ptb.de
H. Nicklich, SPEKTRA Schwingungstechnik und Akustik GmbH Dresden