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Underwater object identification based on acoustic sequence is a complex task, mainly, because of the non-stationary nature of the underwater environment. Moreover, the ambient conditions contribute heavily to varying temporal and spectral characteristics of the source. Further, the characteristic features of a source lie within its spectrum whereas pure spectral contents are more robust to variations...
Wavelet Transform is a widely used tool in signal processing which helps in localizing a signal in both time and frequency domain. This is in contrast to FFT which can only resolve a signal in frequency domain. Additionally, Wavelet Transform has been widely employed by electrical machines researchers for fault diagnosis and prognosis especially as means to extract features for classification purposes...
In this paper four simple but very effective image enhancement technique is implemented in a digital configurable block on Programmable System on Chip (PSoC). This is done by converting a 2D gray image matrix to 1D vector and send it to PSoC5 LP Universal Asynchronous Receiver Transmitter (UART).The UART is communicating with a Verilog component which use Universal Digital Block Array (UDB) for implementing...
Owing to their extensive use and waste presence in different procedures and processes, induction machines are rightly called as the work horses of the industry. Adequate and timely maintenance, fault finding and repair of these machines is a mandatory requirement for efficient working. In literature, extensive work has been presented exploring induction machine faults their symptoms and remedies....
Underwater imaging is primarily focused on search and rescue, underwater mine detection, underwater cable and pipeline overhauling and underwater geological survey. Main challenge in underwater imaging is blurriness. In underwater environment blurriness is caused by many factors which includes microscopic organism, impurities and density of water which effects refractive index of water, and bokeh...
Supervisory Control and Data Acquisition (SCADA) systems are traditionally proprietary and well protected. Due to increasing use of commercial/open source technology and communication protocols, there are growing concerns about the associated security threats. SCADA networks are usually employed in critical infrastructure, therefore, not much technical data of the actual systems is accessible to the...
The novelty of work is the application of first order sliding mode techniques for hybrid model to estimate the system states which are finally analyzed to detect of Misfire fault. The output of hybrid model of SI engine (engine speed) is compared with the observed engine speed to generate the output error. The sliding mode observer is designed to track the engine speed and estimate the other system...
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