Diagnostics of Rotating Machines in Power Plants

1. Influence of Modeling of a Rotor System on Accuracy of Identification of Its Unbalance Changes

   • J. M. Krodkiewski, N. Zhang, J. Ding

   Pages 291-301

2. Some Theoretical Problems and Concepts in Developing the Techniques of Machinery

   • Min Xu

   Pages 303-308

3. On-Line Identification and Diagnosis of Unbalance Forces of the Rotor of Rotating Machines

   • Zhi-Fang Fu, Hai-Ting Zhou, Zhu-Shi Rao

   Pages 309-319

4. Experimental Estimation of Vibrational Symptom Limit Values for Large Steam Turbines

   • Z. Orlowski, T. Galka

   Pages 321-330

5. Turbogenerator Foundation Vibrations in a New Power Plant

   • E. Goldfracht, R. Rouen

   Pages 331-341

6. Diagnostic Techniques in Condition Monitoring

   • G. Diana, A. Vania, A. Vallini, G. A. Zanetta

   Pages 343-353

7. The Study of the Rotor Pump Vibrations

   • J. Wawrzecki, J. Turant

   Pages 355-362

8. An on-Line Technique to Monitor and Control the Performance of Plain Bearings in Large Installations

   • S. K. Roy Chowdhury, S. Chandra

   Pages 363-370

The papers presented on this occasion examined the most significant aspects of diagnostic strategies, emphasizing the importance of predictive maintenance in reducing production shortages and the costs of plant management. The contributions of these authors allow a critical comparison of the varied experiences in developing and applying the different diagnostic methodologies employed in several parts of the world. The following problems are discussed: characteristics of condition monitoring systems - data acquisition techniques and data processing methodologies; choice of transducers and of measurement point locations; data compression techniques; alarm levels evaluation (acceptance regions); strategies for detecting malfunction conditions; diagnostic methodologies for the on-line and off-line identification of the cause of fault; expert systems; definition of the guidelines for the presentation in control rooms of monitoring data and diagnostic results; rotordynamic models used, off-line, to confirm faults diagnosed on-line.

• Rotating Machines
• condition monitoring
• control
• data acquisition
• data compression
• diagnostics
• identification
• International Federation of TMM
• machine
• maintenance
• measurement
• plants
• processing
• production
• transducer

• Technical University of Milan, Italy

  G. Diana

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