MULTIBODY SIMULATION FORMULATIONS IN FAULT DIAGNOSIS OF A REEL

摘要

In order to improve the recognition of faulty situations, the model-based fault diagnosis can be used together with signal processing methods. In this study, faults and abnormalities of a reel is studied by employing the multibody simulation approach. The reel under consideration consists of a number of subsystems including hydraulics, electrical drives and mechanical parts, which are coupled by joints, friction forces and contact forces. Using the multibody simulation approach, the complete model of the reel can be obtained by coupling different subsystems together. Three well-known multibody formulations, a method of Lagrange multipliers, an Augmented Lagrangian method and a method based on projection matrix R, are briefly described and compared in order to find out the most efficient method for simulating the studied reel. It is noteworthy, that the method based on an Augmented Lagrangian formulation is also capable of real-time fault diagnosis of a reel.