CALCULATIONS OF UNCERTAINTY IN MEASUREMENTS
Abstract
Rules of evaluation of uncertainty as a measure of measurement accuracy are presented in the well-known "Guide to the expression of uncertainty in measurement". There are a few examples of uncertainty calculations in literature. However, all these examples refer to the case when the output quantity is determined on the basis of known input quantities by an analytical formula. In this paper a case when the output quantity is determined on basis of known input quantities by solving numerically a set of equations is discussed. It was shown that the rules recommended in the Guide cannot be used directly to calculate the standard uncertainty of the output quantity in this case but the calculations can be done using Monte Carlo simulations. Next, a software package that enables quick determination of the combined standard uncertainty or the extended uncertainty not only in case of analytical models of measurement process but also when the measurement result is calculated by numerical methods or algorithms is presented.
Event details
- Event
- XVI IMEKO World Congress
- Place
- Vienna, AUSTRIA
- Time
- 25 September 2000 - 28 September 2000