In general, newer safety systems are starting to depend more and more on inclusion of electrical components, because of their high responsiveness and reliability. The same is true in our case, where one of the key components of a seat belt safety locking system is the discussed "clapper" electromagnetic actuator. A key task of the actuator is to open its clap as quickly as possible in order to achieve better responsiveness of the remaining safety mechanism. In the final thesis, we made an analysis of the mentioned opening clap velocity with the help of comparing numerical and experimental measurements. The numerical part of the measurements was obtained with the help of numerical simulation of a 3D actuator model in a simulation and modeling environment Ansys Workbench, whereas the experimental part of the measurements was obtained by the appropriate use of a triangulation laser sensor. Based on the differences in the results of the latter mentioned measurements, we identified three main factors, that could have an influence on these differences, such as: the value of friction coefficient, the value of the translational movement of the pins and air resistance. Each of the mentioned factors was measured and compared to the primary measurements, with the use of different measuring methods of the already prepared numerical model. The final results have shown, that the translational movement of the pins had the greatest effect on the rotational damping, while the influence of the value of friction coefficient and air resistance was minimal.
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