Bearing Health Monitoring Based on the Orthogonal Empirical Mode Decomposition

Figure 1

Test rig. 1, electric motor; 2, countershaft; 3, driving pulley; 4, driven pulley; 5, trapezoidal belt; 6, pretensioning system; 7, undamaged bearing; 8, faulty bearing; 9, positioning slide; 10, fixing rail for the electric motor; 11, platform. Red squares represent the two accelerometers mounted one vertical and one along the axis of the shaft.