Abstract: The curvature radii and relative angles of a planar continuous curve at discrete points are chosen as local parameters to represent the curve and thereby the programmed digital path atlas of mechanisms is set up. The mathematical models of mechanism synthesis for path generation based on the local characteristics are built and the genetic algorithms are applied to synthesize the mechanisms concurrently, combining the type synthesis and the dimension synthesis of mechanisms to some extend.

Key words: Local parameters, Mechanism synthesis for path generation Concurrent optimization, Programmed digital atlas, Aerodynamics, Cross wind, High-speed train, Subgrade structures