Precision and low cost position detection using capacitive sensor technology. - Ilmenau : ilmedia. - Online-Ressource (PDF-Datei: 6 S., 624,7 KB)Publ. entstand im Rahmen der Veranst.: 56th IWK, International Scientific Colloquium, Ilmenau University of Technology, 12 - 16 September 2011 / Faculty of Mechanical Engineering, Ilmenau University of Technology
http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2013200082
Vacuum transfer system for loading the Sartorius prototype mass comparator CCL1007. - Ilmenau : ilmedia. - Online-Ressource (PDF-Datei: 4 S., 513,7 KB)Publ. entstand im Rahmen der Veranst.: 56th IWK, International Scientific Colloquium, Ilmenau University of Technology, 12 - 16 September 2011 / Faculty of Mechanical Engineering, Ilmenau University of Technology
http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2013200071
Contact-free flow rate measurement in weakly conducting electrolyte using Lorentz force velocimetry. - In: Proceedings of XX IMEKO World Congress, ISBN 978-89-950000-5-2, (2012), insges. 2 S.
A novel contactless flow rate measurement device for poorly conducting fluids using Lorentz force velocimetry. - In: THMT 12, ISBN 978-1-56700-302-4, (2012), insges. 5 S.
The EMRP project "thermal design and dimensional drift". - In: Proceedings of the 12th International Conference of the European Society for Precision Engineering and Nanotechnology, (2012), S. 315-318
Noncontact electromagnetic flow measurement in electrolytes. - In: 23rd International Congress of Theoretical and Applied Mechanics, 2012, FM11-005, insges. 2 S.
Lorentz force velocimetry (LFV) is a noncontact electromagnetic flow measurement technique that is currently successfully applied for velocity measurements in liquid metals both in laboratory experiments and industry. However, up to now the application of LFV was restricted to conducting fluids with electrical conductivities of the order of 106 S/m such as are encountered in liquid metals. Here we demonstrate that LFV can be successfully extended to poorly conducting fluids (electrolytes) by using high-resolution force measurements.
High speed temperature sensors in emission systems of combustion engines. - In: Proceedings of XX IMEKO World Congress, ISBN 978-89-950000-5-2, (2012), insges. 5 S.
Temperature sensors used in emission systems of combustion engines must register enormous temperature differences within the shortest periods of time. This serves to protect the engine parts with respect to their temperature stability and to govern the energy efficient functioning of the engine. Numerical calculations according to the Finite Elements Method are used to estimate static-thermal measurement errors and dynamic characteristics primarily concerning medium specificity and construction of the temperature sensors. Prediction models are used to correct the dynamic behaviour and to predict the medium temperature faster accurately.
Nanopositioning system with combined force measurement based on electromagnetic force compensated balances. - In: Proceedings of XX IMEKO World Congress, ISBN 978-89-950000-5-2, (2012), insges. 5 S.
This paper descusses a novel nanopositioning system which is based on an electromagnetic force compensated (EMC) balance. In addition to the positioning the actuating force can also be measured. This enables the measurement of force displacement curves of springs tith a wide variety of spring constants. The measurement renge of the spring constants is up to 10(10) N/m with a maximum resolution of about 0.01 N/m. Compared to other principes for measuring the spring constant the introduced method is more sophisticated. Both force as well as the displacement can be measured traceable and simultaneously.
Traceable determination of mechnical parameters of binocular shaped force transducers according to EN ISO 376. - In: Proceedings of XX IMEKO World Congress, ISBN 978-89-950000-5-2, (2012), insges. 6 S.
This paper discusses the traceable determination of mechanical parameters of monolithic binocular shaped dual beam spring elements that are applied as force transducers and load cells in the mass and force metrology. Thereby it mainly deals with the measurement fo the specific values creeping, reversibility, reproducibility, zero error and interpolation error which are defined in applicable regulations such as the EN ISO 376 standard or the OIML recommendation R 60. Our determination of those parameters is based on an interferometric deformation measurement of a loaded binocular shaped dual beam spring element which is made of the common aluminium alloy AW 2024. Generally there is no restriction on the spring element material. The parameters mentioned above are derived from the measured interferometer signal according to the END ISO 376 standard and are thus traceable to the wavelength of light. The used measurement setup is introduced, measurements of the mentioned parameters are presented and their uncertainty is depicted. It is proved that the setup is suitable to classify dual beam spring elements according to the highest accuracy Class 00 of ENd ISO 376.
Investigation on the impedance-frequency-response for a dynamic behaviour description of elecromagnetic force compensated load-cells. - In: Proceedings of XX IMEKO World Congress, ISBN 978-89-950000-5-2, (2012), insges. 5 S.
In this paper, a method for deriving significant parameters for the description of the dynamic behaviour of electromagnetic force compensated loadcells (EMC) from its impedance-frequency-response is presented. With these parameters, the dynamical behaviouf of a load-cell can be depicted and classified near its main resonance frequency, or by going the inverse way the load-cell can be designed based ont he favored parameters to fulfill the desired criteria concerning the dynamical behaviour. This method is based on the estimation of parameters describing the behaviour of electrodynamic speakers, called Thiele-Small-Parameters, which is state of the art for designing loudspeakers. It will be demonstrated that the controller design for the EMC load-cell can be based on the derived parameters.