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Author(s):  
Jagdish A. Patel ◽  
Runita Jadhav ◽  
Nayan Khandbahale ◽  
Gayatri Kajale

We review existing machine condition monitoring techniques and industrial automation for plant-wide condition monitoring of rotating electrical machines. Cost and complexity of a condition monitoring system increase with the number of measurements, so extensive condition monitoring is currently mainly restricted to the situations where the consequences of poor availability, yield or quality are so severe that they clearly justify the investment in monitoring. There are challenges to obtaining plant-wide monitoring that includes even small machines and non-critical applications. One of the major inhibiting factors is the ratio of condition monitoring cost to equipment cost, which is crucial to the acceptance of using monitoring to guide maintenance for a large fleet of electrical machinery. Ongoing developments in sensing, communication and computation for industrial automation may greatly extend the set of machines for which extensive monitoring is viable.


2019 ◽  
Vol 150 ◽  
pp. 1028-1036 ◽  
Author(s):  
Banglin Deng ◽  
Yangyang Chen ◽  
Aodong Liu ◽  
Zhengxin Xu ◽  
Songyu Hu ◽  
...  

2019 ◽  
Vol 355 ◽  
pp. 170-180 ◽  
Author(s):  
Xiaoqiang Liu ◽  
Banglin Deng ◽  
Jianqin Fu ◽  
Zhengxin Xu ◽  
Jingping Liu ◽  
...  

2019 ◽  
Vol 21 (42) ◽  
pp. 23733-23741 ◽  
Author(s):  
Tam V.-T. Mai ◽  
Hieu T. Nguyen ◽  
Lam K. Huynh

The detailed kinetic mechanism of the N2H4 + OH reaction is comprehensively reported for a wide condition range of conditions (i.e., 200–3000 K & 1–7600 Torr) using the CCSD(T)/CBS//M06-2X/6-311++G(3df,2p) level and the RRKM-based master equation rate model.


2011 ◽  
Vol 27 (13) ◽  
pp. 1832-1838 ◽  
Author(s):  
S. Roy ◽  
M. Werner-Washburne ◽  
T. Lane

1996 ◽  
Vol 82 (3_suppl) ◽  
pp. 1371-1376 ◽  
Author(s):  
Kimihiko Yamagishi

Frequency estimation of social facts was compared between two methods of response elicitation. In the “narrow range” method, respondents answered questions like: “Out of 100 instances, how many instances belong to category X?”. In the “wide range” method, the same question was asked regarding “Out of 10,000.” A previous study in 1994 showed that judged frequencies were proportionally greater in the narrow condition than in the wide condition when subjects estimated the occurrence of low-frequency events. These results were interpreted to reflect cognitive processes of anchoring, wherein judged frequencies he close to small numbers within particular response ranges. The current work extends this argument to high-frequency events. In such cases, judgments about high-frequency events would be reached by similar cognitive processes operating toward the opposite direction. Hence, I predicted that judged frequencies for high-frequency events would be proportionally greater in the wide than in the narrow condition. Results were mostly consistent with these predictions. The relation to previous research is discussed.


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