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| Gupta,Saurabh; Khosravy,Mahdi; Gupta,Neeraj; Darbari,Hemant; Patel,Nilesh. |
| Abstract Agricultural Machinery as an off-road vehicle is the backbone of the World agricultural industry. Its main function is to operate as a prime mover and support the power requirements to function the various type of draft implements. In this regards, the hydraulic system is an important part and is controlled by the propagated oil which is cleaned by impurities and debris using a filter system. Once it blocks, the bypass opens to avoid any pressure burst of the system, and the particles find their way into the hydraulic system and get lodged in the gears, pumps, valves, and drive train to hinder the performance of the Agricultural Machinery. This research presents an onboard Multiple Signal Classification Algorithm (MUSIC) and pseudo-spectrum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Predictive maintenance; Preventive maintenance; Hydraulic systems; Acoustic measurements; Computerized instrumentation; Acoustic signal detection; Fault diagnosis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100213 |
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| Diner, Noel. |
| The aggregate backscattering cross-section, sag, is the sum of backscattering cross-sections of all fish in a shoal. It is a basic acoustical parameter used for shoal description and biomass estimation. Simulations were undertaken for evaluating the impact of horizontal dimension, density, depth and beam width on measurements of sag for shoals with constant abundance. The important factor determining measurement bias is the ratio of shoal size expressed as along cross-section length relative to along ship beam width at mean shoal depth. The results show that 10 log10(sag) is underestimated by about 8 dB for a 5 m long shoal located at 200 m depth if detected by a 7? beam. A formula for correcting sag estimates for shoal sizes bigger than 1.3 times the beam... |
| Tipo: Text |
Palavras-chave: Shoal dimension; Shoal energy; Single beam echosounder; Acoustic measurements; Accuracy; Bias. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2583.pdf |
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