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 expensive. In order to reduce costs and save time during the testing and analysis phase, the use of dedicated test rigs is increasing. The present thesis focuses on a roller rig for testing full scale locomotives and wagons, which is located at the Osmannoro Centre of Experimental Dynamics. Aim of the roller rig is to verify traction systems of locomotives, to test anti-slip/anti-skid control systems and to identify braking performance and to perform electromagnetic tests (radiated emissions and immunity) on the locomotive. The aim of the present thesis is the design of a control strategy allowing to perform the desired test, using a SIL approach. A numerical model of the complete test bench and its control strategy realized in a dedicated environment (Matlab/Simulink) was implemented. This model permits to simulate the roller rig about longitudinal and vertical dynamics. Moreover a multi-body model of the vehicle and the roller rig, realized with Simpack, was connected to Matlab/Simulink environment in order to have a complete 3D dynamic analysis.
In ambito ferroviario, con lo scopo di aumentare le prestazioni e l'efficienza dei veicoli, oltre ad incrementarne la sicurezza, sono di fondamentale importanza le prove sperimentali sui componenti, sulle strategie di controllo e sulle soluzioni innovative. Queste prove sono solitamente effettuate sulla linea ferroviaria, il che le rende molto costose. Per ridurre i costi e risparmiare tempo, sia durante le prove che nella fase di analisi dei risultati, sta crescendo l'utilizzo di appositi banchi a rulli. La presente tesi si concentra sul banco a rulli presente al centro di dinamica sperimentale di Osmannoro, dove è stato realizzato un banco a rulli in scala reale per le prove su locomotive e vagoni. L'obiettivo di questo banco è di verificare i sistemi di trazione delle locomotive e le prestazioni dei veicoli in fase di frenata, di provare i sistemi di antislittamento e antipattinamento, di effettuare prove elettromagnetiche sulle locomotive, circa le radiazioni emesse e la protezione da esse. Lo scopo di questa tesi è progettare la logica di controllo che permetta di condurre le prove desiderate, usando un approccio SiL. E' stato perciò implementato, nell'ambiente Matlab/Simulink, un modello del banco a rulli e della sua logica di controllo, che permette una simulazione della dinamica longitudinale e verticale del veicolo sul banco. Inoltre è stato creato un modello multi-body del veicolo e del banco usando il software Simpack. Questo modello viene utilizzato connettendolo con il software Matlab/Simulink per poter effettuare analisi dinamiche tridimensionali.
Development of a full-scale roller-rig numerical model and of its control logic
CORBETTA, ALBERTO
2017/2018
Abstract
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 expensive. In order to reduce costs and save time during the testing and analysis phase, the use of dedicated test rigs is increasing. The present thesis focuses on a roller rig for testing full scale locomotives and wagons, which is located at the Osmannoro Centre of Experimental Dynamics. Aim of the roller rig is to verify traction systems of locomotives, to test anti-slip/anti-skid control systems and to identify braking performance and to perform electromagnetic tests (radiated emissions and immunity) on the locomotive. The aim of the present thesis is the design of a control strategy allowing to perform the desired test, using a SIL approach. A numerical model of the complete test bench and its control strategy realized in a dedicated environment (Matlab/Simulink) was implemented. This model permits to simulate the roller rig about longitudinal and vertical dynamics. Moreover a multi-body model of the vehicle and the roller rig, realized with Simpack, was connected to Matlab/Simulink environment in order to have a complete 3D dynamic analysis.File | Dimensione | Formato | |
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2018_10_Corbetta.pdf
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https://hdl.handle.net/10589/142842