Experimental testing components, innovative solutions and control strategies is essential in order to increase performances, optimize efficiency and ensure a proper safety level of a railway vehicle. These tests are usually performed directly on line, thus being very expansive. In order to reduce costs and save time during the testing/analysis phase, the use of dedicated test rigs is increasing. A roller rig for testing full scale locomotives is considered in this paper. In order to investigate the influence of the roller rig dynamics on the test bench behavior in a design stage, a numerical model of the full system (including the locomotive, the roller rig and the corresponding control systems) has been developed and a parametric analysis has been carried out.

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