Owing to the fact that sampling ways and propagation paths of vibration signals under embedded ways are much different from those of traditional methods

the fault vibration propagation characteristics in a gearbox under the condition of embedded sensing were studied based on finite element simulations.Then

an optimal placement model was built based on signed directed graph(SDG) of faults vibration propagation in a gearbox

and a solution algorithm was proposed based on particle swarm optimization(PSO).Finally

an example was presented and simulation results demonstrate that the proposed methods are feasible

providing an effective way to embed sensors into a gearbox.