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Full-Text Articles in Engineering
Improved Random Demodulator For Compressed Sensing Applications, Sathya Narayanan Hariharan
Improved Random Demodulator For Compressed Sensing Applications, Sathya Narayanan Hariharan
Open Access Theses
The advances in the field of signal processing have led to the continuous increase in the bandwidth of signals. Sampling these signals becomes harder and harder due to the increased bandwidth. This brings in need for a complex high rate ADCs to meet the Nyquist rate which is the minimum rate to avoid aliasing. For a given increase in bandwidth, there has to be a corresponding increase in the sampling rate of ADC. This might not be possible in the near future at the current rate of increase in bandwidth. Hence, there is a need to replace the current Nyquist …
A Diagnosis Feature Space For Condition Monitoring And Fault Diagnosis Of Ball Bearings, Ali Kahirdeh
A Diagnosis Feature Space For Condition Monitoring And Fault Diagnosis Of Ball Bearings, Ali Kahirdeh
LSU Master's Theses
The problem of fault diagnosis and condition monitoring of ball bearings is a multidisciplinary subject. It involves research subjects from diverse disciplines of mechanical engineering, electrical engineering and in particular signal processing. In the first step, one should identify the correct method of investigation. The methods of investigation for condition monitoring of ball bearings include acoustic emission measurements, temperature monitoring, electrical current monitoring, debris analysis and vibration signal analysis. In this thesis the vibration signal analysis is employed. Once the method of analysis is selected, then features sensitive to faults should be calculated from the signal. While some of the …