UNCERTAINTY EVALUATION OF DYNAMIC MEASUREMENTS IN LINE WITH THE GUM |
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| Clemens Elster, Sascha Eichstädt, Alfred Link |
- Abstract:
- We consider the task of uncertainty evaluation in the context of dynamic measurements. We assume that the relation between the time-dependent value of the measurand and the available output signal of an employed sensor is governed by a linear time-invariant system. Estimation of the measurand is done by applying a digital filter to the sensor's output signal. We propose a method for uncertainty evaluation which is in line with the Guide to the Expression of Uncertainty in Measurement (GUM). The method accounts for dynamic errors due to non-perfect compensation of the dynamic behavior of the sensor, and it allows for real-time calculation when a causal digital filter is employed. The proposed uncertainty calculation method can be used to design an uncertainty-optimum filter. We illustrate the procedures in terms of a simple example.
- Keywords:
- uncertainty, LTI System, digital filter
- Download:
- IMEKO-WC-2009-TC21-057.pdf
- DOI:
- -
- Event details
- Event name:
- XIX IMEKO World Congress
- Title:
Fundamental and Applied Metrology
- Place:
- Lisbon, PORTUGAL
- Time:
- 06 September 2009 - 11 September 2009