چكيده به لاتين
Suspension of maglev results from the interaction between suspension electromagnets mounted on the train body and the beams of the guideway. The controlling suspension on these trains is important in terms of providing safety and passenger comfort and influencing the operation costs of a maglev system. One of the solutions to reduce the operation costs of this system is to reduce the rigidity of the guideway, although it can reduce operation costs, but it puts the system in jeopardy. In fact, the use of elastic beams causes the self-excited vibration phenomenon in coupling of train – line, which leads to divergence of the beam vibration and consequently divergence of the levitation gap and collision of the train with guideway. Due to the great importance of self–excited vibration in train–line coupling, in this thesis, the design, simulation and fabrication of a scaled test rig have been carried out to examine this phenomenon. This test rig is designed and built based on the uniformity of the vibrational characteristics of the elastic beam and the mass, spring and damper vibrational system. The advantages of this test rig in comparison with the same samples are very low cost, the ability to change the vibrational parameters of the studied beam, high adaptability to the real system and different system scaling method. Scaling of this system has been done with different similarity coefficients, which make it possible to access the control parameters needed for the experimental control of the suspension system. This system can be used as suitable test to verify the designs in this field which leads to less risk in full-scale tests.
