Mathematical model of plane-graph of three-freedom-degree epicyclc gearboxes was constructed
and using D.M.P algorithm
feasibility of transmission connection diagrams weere judged and those diagrams with interference of components were excluded. Then using heuristic depth-first search method
all feasible transmission connection diagrams could be gained. Based on these methods
a CAD system for design of transmission schemes of epicyclc boxes is finished. Because of the enhancement of calculation speed