In the paper a method of the railway track axis geometrical shape identification in a horizontal plane, directly from the continuous satellite measurements, is presented. In this method, an algorithm for the design of railway track sections located in the horizontal arc is used. The algorithm uses an analytical description of the layout by means of suitable mathematical formulas. The design procedure has a universal character and it creates a possibility of varying both the type and the length of transition curves. An identification of the existing horizontal arcs is made in a main directions reference system or without it in case of more complex layouts. The developed computer program is based on a calculation algorithm, which operates on the numerical representation of the railway track geometrical shape and uses a set of functions providing G2 joins between straight lines and circular arcs using transition curves. In the proposed algorithm the geometrical parameters of the horizontal layout are estimated in the optimization process. To solve the problem Particle Swarm Optimization algorithm is used. A minimization of the distance between existing layout and the designed one is used as an optimization criterion.
Authors
Additional information
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
- Language
- angielski
- Publication year
- 2016
