A Simultaneous Fault Diagnosis Method Based on Cohesion Evaluation and Improved BP-MLL for Rotating Machinery

Figure 7

The structure of WTDDS (1, brake; 2, planetary gearbox; 3, shaft gearbox; 4, motor; 5, four sensors (from left to right: vibration, force, vibration, and torque); 6, windmill).

(a)

(b)