Model and algorithm of optimal embedded sensors placement for gearboxes based on signed directed graph of vibration propagation

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.