| Zugriffsnummer | 18931 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Calibration of accelerometers: determination of amplitude and phase response upon shock excitation |
| Autor(in); Institution |
Link, Alfred; 8.4, Mathematische Modellierung und Datenanalyse, PTB-Berlin
Täubner, Angelika; 1.3, Kinematik, PTB-Braunschweig
Wabinski, Wolfgang; 1.3, Kinematik, PTB-Braunschweig
Bruns, Thomas; 1.3, Kinematik, PTB-Braunschweig
Elster, Clemens; 8.4, Mathematische Modellierung und Datenanalyse, PTB-Berlin
|
| Quelle/Jahr | Measurement Science and Technology: 17 (2006), 1888 - 1894 |
| ISSN | 0957-0233 (PRINT) ; 1361-6501 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP Publ. |
| Freie Schlagworte | accelerometer calibration ; shock excitation ; frequency domain ; measurement uncertainty |
| Zusammenfassung | A novel approach is proposed for the analysis of shock calibration measurements of accelerometers. The input/output behaviour of an accelerometer is represented by a physical model in terms of a second-order differential equation. The unknown model parameters, i.e. the coefficients of the differential equation, are estimated by a frequency domain least-squares approach. The derived model is then used to determine the frequency response of the accelerometer. The method was applied to calibration measurements upon shock excitations of two back-to-back accelerometers (ENDEVCO, type 2270 and Brüel & Kjær type 8305). The determined frequency response was then compared to additional calibration measurements upon sinusoidal excitation. The sinusoidal excitation measurements were analysed by means of the established sine approximation method. Consistent results were obtained by the two methods which confirm the validity of the proposed modelling approach. |
