  Differences between computer simulation of dynamical systems and laboratory
experiments are common in teaching and research in engineering. Normally,
numerical inaccuracy and the non-ideal behaviour of the devices involved in the
experiment are the most common explanations. With the application of interval
analysis, it is possible to incorporate the numerical and parametric
uncertainties in the simulation, allowing a better understanding of the play
between simulation and experiment. This article presents a case study in which
an step input is applied to an RLC circuit. Using the toolbox Intlab for
Matlab, it was possible to present a computer simulation with the range that
encompasses the experimental results . Comparison of simulation with
experimental data show the success of the technique and indicates a potential
content to be delivered to undergraduate engineering courses.
