An Investigation on Rolling Element Bearing Fault and Real-Time Spectrum Analysis by Using Short-Time Fourier Transform

Santhoshi, M. Siva; Babu, K. Ganesh; Kumar, Sanjeev; Nandan, Durgesh

doi:10.1007/978-981-15-7234-0_52

Cited by 16 publications

(22 citation statements)

References 18 publications

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“…Stereoscopic visuals are projected on the room's walls rather than through a head-mounted display (HMD) (user must wear LCD shutter glasses). Virtual reality (VR) has long been recognised in the architecture design process as a fun, interactive tool with a high level of realism that can enhance the creative process [5,6]. Scientific visualisation is another area where virtual reality can be quite beneficial.…”

Section: Literature Reviewmentioning

confidence: 99%

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Analysis of the Use of VR in Medical and Science and Technology

Reddy

Venkatesh

Kumar

2022

Advances in Transdisciplinary Engineering

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Using virtual reality as an asset and a part of our future is discussed in this article. You can experience, feel, and even touch the past, as well as the present, and future, through it. As a means of creating our own reality, it serves as a medium for us to do so. A virtual reality experience could include everything from developing a video game to a virtual walk across the world, or even a virtual walk through our own ideal house. The most terrifying and gruelling experiences can be experienced in a safe and educational manner with virtual reality. As a result of our research, we’ve compiled this report on everything we’ve learned about virtual reality so far. It covers everything from levels of immersion to the components that go into creating a virtual environment, as well as the history, present, and future of the technology. As a result, both the technologies themselves and the prices and logistics required to implement them have a variety of restrictions. Nevertheless, these new technologies have their own set of problems, which is why we conclude this study with a number of fresh ways and possibilities for future researchers who want to apply these new technologies to education.

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Section: Literature Reviewmentioning

confidence: 99%

“…There are no boundaries or limits in the world of three-dimensional graphics; instead, we can construct and alter it to our hearts' content. However, not enough people are always looking for more [1][2][3][4][5]. They want to be a part of this environment, rather than merely viewing it on a computer screen.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Use of VR in Medical and Science and Technology

Reddy

Venkatesh

Kumar

2022

Advances in Transdisciplinary Engineering

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“… Leg short circuit (shoot through fault) (LSC) A survey of different fault tolerant topologies for three-phase voltage source inverter has been outlined in [1][2][3][4]. Application of fault tolerant inverter for use in permanent magnet drive and permanent magnet synchronous drive have been discussed in [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Topological and Control Aspects of 3-Phase 2-Level Fault Tolerant Inverter for Induction Motor Application

Kumar

Lavanya

2022

Advances in Transdisciplinary Engineering

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Fault-tolerant inverter plays a vital role to mitigate any short circuit or open circuit fault in the inverter that may be encountered. Additional switches and redundant legs of an inverter are used to design fault-tolerant mechanisms for the inverter. This paper provides the topology aspect and control aspects of a 3-phase 2-level fault-tolerant inverter for induction motor application. Different fault-tolerant topologies and their respective control strategies have been developed in this paper. This work presents an investigation into the topological and control aspects of a fault-tolerant inverter system that is applied to an alternating current motor drive. In this paper, two distinct fault-tolerant inverter topologies, as well as their closed-loop control, are described in greater detail. In order to validate the theoretical part of the work, findings from simulations have been supplied.

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“…e basic idea of short-time Fourier transform is to realize the quasi-stationary performance of nonstationary signal through time window function and then obtain the time-varying law of signal frequency domain characteristics. As a generalization of Fourier transform, this method retains the characteristics of linear transformation and has good effect in processing quasi-stationary signals, but it is not ideal for processing nonstationary signals [5][6][7]. Wavelet transform inherits and expands the localization idea of STFT, effectively overcomes the defect of fixed window area, and can focus on arbitrary details of signals, which is a real multiresolution analysis and is widely used.…”

Section: Introductionmentioning

confidence: 99%

Research on the Noise Reduction Method of the Vibration Signal of the Hydrogenerator Unit Based on ITD-PE-SVD

Ren

Liu

Hu³

et al. 2021

Mathematical Problems in Engineering

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Aiming at the problem that the vibration signals of the hydrogenerator unit are nonlinear and nonstationary and it is difficult to extract the signal features due to strong background noise and complex electromagnetic interference, this paper proposes a dual noise reduction method based on intrinsic time-scale decomposition (ITD) and permutation entropy (PE) combined with singular value decomposition (SVD). Firstly, the vibration signals are decomposed by ITD to obtain a series of PRC components, and the permutation entropy of each component is calculated. Secondly, according to the set permutation entropy threshold, the PRC components are selected for reconstruction to achieve a noise reduction effect. On this basis, SVD is carried out, and the appropriate reconstruction order is selected according to the position of the singular value difference spectrum mutation point for reconstruction, so as to achieve the secondary noise reduction effect. The proposed method is compared with the LMD-PE-SVD and EMD-PE-SVD dual noise reduction method by simulation, taking the correlation coefficient and signal-to-noise ratio to evaluate the noise reduction performance and finding that the ITD-PE-SVD noise reduction has good noise reduction and pulse effect. Furthermore, this method is applied to the analysis of the upper guide swing data in the X-direction and Y-direction of a unit in a hydropower station in China, and it is found that this method can effectively reduce noise and accurately extract signal features, thus determining the vibration cause, which is helpful to improve the turbine fault recognition rate.

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An Investigation on Rolling Element Bearing Fault and Real-Time Spectrum Analysis by Using Short-Time Fourier Transform

Cited by 16 publications

References 18 publications

Analysis of the Use of VR in Medical and Science and Technology

Analysis of the Use of VR in Medical and Science and Technology

Topological and Control Aspects of 3-Phase 2-Level Fault Tolerant Inverter for Induction Motor Application

Research on the Noise Reduction Method of the Vibration Signal of the Hydrogenerator Unit Based on ITD-PE-SVD

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