By Robert B. Randall, Nader Sawalhi, Michael Coats (auth.), Tahar Fakhfakh, Walter Bartelmus, Fakher Chaari, Radoslaw Zimroz, Mohamed Haddar (eds.)
Condition tracking of machines in non-stationary operations (CMMNO) will be noticeable because the significant problem for learn within the box of equipment diagnostics.
Condition tracking of machines in non-stationary operations is the identify of the provided e-book and the identify of the convention held in Hammamet - Tunisia March 26 – 28, 2012. it's the moment convention less than this identify, first came about in Wroclaw - Poland , March 2011.
The topic CMMNO comes without delay from wishes and statement of genuine gadgets. so much monitored and clinically determined gadgets utilized in works in non-stationary operations situation. The non-stationary operations come from success of equipment projects, for which they're designed for. All equipment utilized in varied form of mines, delivery structures, automobiles like: automobiles, buses and so on, helicopters, ships and battleships and so forth paintings in non-stationary operations.
The papers integrated within the ebook are formed via the organizing board of the convention and authors of the papers.
The papers are divided into 5 sections, namely:
Condition tracking of machines in non-stationary operations
Modeling of dynamics and fault in systems
Signal processing and development recognition
Monitoring and diagnostic systems
Noise and vibration of machines
The awarded e-book offers the again flooring to the most goal of the CMMNO 2012 convention that's to assemble clinical neighborhood to debate the key advances within the box of equipment situation tracking in non-stationary stipulations.
Read Online or Download Condition Monitoring of Machinery in Non-Stationary Operations: Proceedings of the Second International Conference "Condition Monitoring of Machinery in Non-Stationnary Operations" CMMNO’2012 PDF
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Extra resources for Condition Monitoring of Machinery in Non-Stationary Operations: Proceedings of the Second International Conference "Condition Monitoring of Machinery in Non-Stationnary Operations" CMMNO’2012
Speed and time Inside the NER-HSFD At the middle Fig. 6 Control of vibration of the shaft vs. speed and time 4 Conclusion Non-linear modeling of a hydrostatic squeeze film damper has been presented and applied in a control system to limit the vibration of high speed flexible shafts partly supported by a NER-HSFD. The following conclusions can be obtained. (a) To reduce the vibration of a flexible shaft, the results have revealed that the vibration inside the journal bearing must be kept large when operating close to critical speeds.
In the presented cases of the load susceptibilities the characteristics are interpreted as follows. The case for a good condition of gearbox shows that planetary gearbox behaves as a linear system under increasing load, that means with increasing load, the system deflection increases. 8b in a case of the bad gear condition. 8b) also shows very good separation of data for the good and bad condition. 8a when the data distribution functions overlap each other. In (Bartelmus and Zimroz 2010) robust mechatronic condition monitoring and diagnostic method for gearboxes is given.
The data from acquisition board was stored on a laptop via its USB interface and later post-processed with MATLAB. The sampling frequency used is 10kHz and the single acquisition lasted 50 seconds. For clearness of exposition this paper reports the graphical results (Figs. 3-4 respectively) for just two significant cases: a sound bearing, an artificially damaged bearing (on the outer ring). Each figure shows the first three steps of the procedure: the vibration data after the removal of machine impacts (only a single segment as example), the spectrogram of a single segment and averaged spectrogram 46 M.