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Three-phase PWM rectifiers are adopted extensively in industry because of their excellent properties and potential advantages. However, while the IGBT has an open-circuit fault, the system does not crash suddenly, the performance will be…

机器学习 · 计算机科学 2022-11-02 Kou Lei , Liu Chuang , Cai Guo-Wei , Zhang Zhe , Zhou Jia-Ning , Wang Xue-Mei

A fault diagnosis method for power electronics converters based on deep feedforward network and wavelet compression is proposed in this paper. The transient historical data after wavelet compression are used to realize the training of fault…

信号处理 · 电气工程与系统科学 2022-11-07 Lei Kou , Chuang Liu , Guowei Cai , Zhe Zhang

Effective recognition of acute and difficult-to-heal wounds is a necessary step in wound diagnosis. An efficient classification model can help wound specialists classify wound types with less financial and time costs and also help in…

计算机视觉与模式识别 · 计算机科学 2025-04-15 Ramin Mousa , Hadis Taherinia , Khabiba Abdiyeva , Amir Ali Bengari , Mohammadmahdi Vahediahmar

The short-time Fourier transform (STFT) usually computes the same number of frequency components as the frame length while overlapping adjacent time frames by more than half. As a result, the number of components of a spectrogram matrix…

信号处理 · 电气工程与系统科学 2020-10-29 Daichi Kitahara

Deep learning provides an excellent avenue for optimizing diagnosis and patient monitoring for clinical-based applications, which can critically enhance the response time to the onset of various conditions. For cardiovascular disease, one…

The state-of-the-art cardiovascular disease diagnosis techniques use machine-learning algorithms based on feature extraction and classification. In this work, in contrast to a conventional single Electrocardiogram (ECG) lead, two leads are…

信号处理 · 电气工程与系统科学 2023-05-26 Cheng Guo , Sajid Ahmed , Mohamed-Slim Alouini

Accurate fault detection and localization in electrical distribution systems is crucial, especially with the increasing integration of distributed energy resources (DERs), which inject greater variability and complexity into grid…

系统与控制 · 电气工程与系统科学 2026-03-02 Kriti Thakur , Alivelu Manga Parimi , Mayukha Pal

The area of Machine learning (ML) has seen exceptional growth in recent years. Successful implementation of ML methods in various branches of physics has led to new insights. These methods have been shown to classify phases in condensed…

统计力学 · 物理学 2021-05-25 Karthik Padavala , Avaneesh Singh , Joyjit Kundu

Fault diagnosis (FD) is essential for maintaining operational safety and minimizing economic losses by detecting system abnormalities. Recently, deep learning (DL)-driven FD methods have gained prominence, offering significant improvements…

机器学习 · 计算机科学 2024-08-13 Dandan Zhao , Karthick Sharma , Hongpeng Yin , Yuxin Qi , Shuhao Zhang

The fundamentals of Fourier Transform are presented, with analytical solutions derived for Continuous Fourier Transform (CFT) of truncated signals, to benchmark against Fast Fourier Transform (FFT). Certain artifacts from FFT were…

应用物理 · 物理学 2019-07-03 K. H. H. Goh

Convolutional Neural Networks (CNNs) are used to evaluate accelerometer and microphone data for bearing and induction motor diagnosis. A Long Short-Term Memory (LSTM) recurrent neural network is used to combine sensor information…

机器学习 · 计算机科学 2025-06-16 Mert Sehri , Merve Ertagrin , Ozal Yildirim , Ahmet Orhan , Patrick Dumond

Vibration-based condition monitoring techniques are commonly used to identify faults in rolling element bearings. Accuracy and speed of fault detection procedures are critical performance measures in condition monitoring. Delay is…

机器学习 · 计算机科学 2024-10-10 Hariom Dhungana , Suresh Kumar Mukhiya , Pragya Dhungana , Benjamin Karic

To comprehensively assess optical fiber communication system conditions, it is essential to implement joint estimation of the following four critical impairments: nonlinear signal-to-noise ratio (SNRNL), optical signal-to-noise ratio…

信号处理 · 电气工程与系统科学 2023-08-29 Ting Jiang , Zheng Gao , Yizhao Chen , Zihe Hu , Ming Tang

Traditional supervised bearing fault diagnosis methods rely on massive labelled data, yet annotations may be very time-consuming or infeasible. The fault diagnosis approach that utilizes limited labelled data is becoming increasingly…

计算工程、金融与科学 · 计算机科学 2022-07-22 Yuhong Jin , Lei Hou , Ming Du , Yushu Chen

The Functional Failure Rate analysis of today's complex circuits is a difficult task and requires a significant investment in terms of human efforts, processing resources and tool licenses. Thereby, de-rating or vulnerability factors are a…

信号处理 · 电气工程与系统科学 2020-02-27 Thomas Lange , Aneesh Balakrishnan , Maximilien Glorieux , Dan Alexandrescu , Luca Sterpone

In this article, analog microwave short-time Fourier transform (STFT) with improved measurement performance is implemented in the optical domain by employing stimulated Brillouin scattering (SBS) and channelization. By jointly using three…

信号处理 · 电气工程与系统科学 2023-05-26 Xiaowei Li , Taixia Shi , Dong Ma , Yang Chen

Deep learning based speech enhancement in the short-time Fourier transform (STFT) domain typically uses a large window length such as 32 ms. A larger window can lead to higher frequency resolution and potentially better enhancement. This…

声音 · 计算机科学 2022-12-07 Zhong-Qiu Wang , Gordon Wichern , Shinji Watanabe , Jonathan Le Roux

Use of synthetic data has provided a potential solution for addressing unavailable or insufficient training samples in deep learning-based magnetic resonance imaging (MRI). However, the challenge brought by domain gap between synthetic and…

By informing the onset of the degradation process, health status evaluation serves as a significant preliminary step for reliable remaining useful life (RUL) estimation of complex equipment. This paper proposes a novel temporal dynamics…

机器学习 · 计算机科学 2024-01-10 Anushiya Arunan , Yan Qin , Xiaoli Li , Chau Yuen

Deep learning (DL) algorithms have been widely applied to short-term voltage stability (STVS) assessment in power systems. However, transferring the knowledge learned in one power grid to other power grids with topology changes is still a…

系统与控制 · 电气工程与系统科学 2024-10-28 Zijian Feng , Xin Chen , Zijian Lv , Peiyuan Sun , Kai Wu