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- Title
Vagona virsbūves lieces svārstību raksturlielumu vērtējums pēc gaitas izmēģinājumu rezultātiem.
- Authors
Ļapšins, Konstantīns
- Abstract
The calculation scheme of bending longitudinal vibrations of motor carriage of electric train ER2T, for modeling in SIMULINK, is presented, as a massive homogeneous beam with the discrete and concentrated masses. Calculation scheme has seven degrees of freedom, two in each bogie (jumping and galloping), and three in body (jumping, galloping and bending force). Carriage moves with speed V, for his initial conditions of vibrations take on zero values. Equations of vibrations of motor carriage of electric train ER2T made in continuous time, as differential equations of motion by means of equations of second kind of Lagrange on potential and kinetic energy and dispersion function. For a filtration of modelling signals discrete time analysis with application of the theory Wavelet is used. After processing of calculation signals estimation of sizes of frequencies of the first tone of own frequency of bending oscillations, own frequencies of a body and frequencies of jumping and galloping of bogies conducted by four models of linear regression by average quadratic criteria with transition from discrete to continuous model. After that was carried out each model estimation results analyses and did conclusions about processing methods error.
- Subjects
RAILROAD trains; RAILROAD electric equipment; VIBRATION (Mechanics); SIMULATION methods &; models; MATHEMATICAL models
- Publication
Transport & Engineering, 2009, Vol 32, p122
- ISSN
1407-8015
- Publication type
Article