Results 1 to 10 of about 1,204,695 (145)

State-of-Health Prediction for Reaction Wheel of On-Orbit Satellite Based on Fourier Broad Learning System

IEEE Access, 2021
The state-of-health (SoH) of the reaction wheel (RW) is a key indicator of the satellite’s ability to function properly and complete its mission successfully.
Xingliu Zhang, Zili Wang, Jian Ma, Shangyu Li, Mingliang Suo   +4 more
doaj   +1 more source

Remaining Useful Life Prediction of Milling Tool Based on Pyramid CNN

Shock and Vibration, 2023
Remaining useful life prediction of a milling tool is one of the determinants in making scientific maintenance decision for the CNC machine tool. Predicting the RUL accurately can improve machining efficiency and the quality of product.
Ning Hu, Zhenguo Liu, Shixin Jiang, Quanzhou Li, Shuqi Zhong, Bingquan Chen   +5 more
doaj   +1 more source

The Chip-Level and Package-Level Degradation of Cascode GaN Device Under Repetitive Power Cycling Stress

IEEE Journal of the Electron Devices Society, 2023
In this work, the electrical characteristics’ failure due to the chip-level damage and its relationship with the package-level degradation have been investigated for the Cascode GaN device under long-term repetitive power cycling test (PCT).
Yijun Shi, Shan Wu, Zhiyuan He, Zongqi Cai, Liye Cheng, Yunliang Rao, Qingzhong Xiao, Yiqiang Chen, Guoguang Lu   +8 more
doaj   +1 more source

Flexible Beamforming for Direct Radiating Arrays in Satellite Communications

IEEE Access, 2023
Onboard satellite communication systems generate and manage coverage beams over the Earth. Depending on data traffic requirements, the number of beams, side lobe levels, nulls, and EIRP, their beamwidth must be efficiently generated and managed ...
Juan Andres Vasquez-Peralvo, Jorge Querol, Flor Ortiz, Jorge Luis Gonzalez Rios, Eva Lagunas, Victor Monzon Baeza, Gianluca Fontanesi, Luis Manuel Garces-Socorras, Juan Carlos Merlano Duncan, Symeon Chatzinotas   +9 more
doaj   +1 more source

Thermal management strategy for active regeneration of diesel particulate filter

Journal of Engineering and Applied Science, 2023
The method of diesel oxidation catalyst (DOC) assistance is an effective way to achieve active regeneration of diesel particulate filter (DPF). Therefore, an appropriate DOC inlet temperature is the essential boundary condition for this regeneration ...
Shenggang Guo, Yu Zhang, Xiaoxue Zhang, Hengxiao Man, Hao Liu   +4 more
doaj   +1 more source

Lifetime Prediction and Aging Mechanism of Glass Fiber Reinforced Acrylate‐Styrene‐Acrylonitrile/Polycarbonate Composite under Hygrothermal Conditions

Macromolecular Materials and Engineering, 2023
The development of fifth‐generation technology has resulted in increased demand for materials with low dielectric losses and superior thermal and mechanical properties.
Peijiang Liu, Zhili Jin, Yihua Chen, Zijun Chen, Yinle Li, Huanxiang Xu, Zhenbo Zhao, Gang Zhu, Zilian Liu, Jinlei Li   +9 more
doaj   +1 more source

Research on Negative Bias Temperature Instability Effects Under the Coupling of Total Ionizing Dose Irradiation for PDSOI MOSFETs

IEEE Access, 2021
The degradation mechanisms for pMOSFETs from a 130 nm partially-depleted silicon on insulator (PDSOI) technology under the combined effects of total ionizing dose (TID) and negative bias temperature instability (NBTI) are investigated.
Chao Peng, Rui Gao, Zhifeng Lei, Zhangang Zhang, Yiqiang Chen, Yun-Fei En, Yun Huang   +6 more
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Investigation of Negative Bias Temperature Instability Effect in Partially Depleted SOI pMOSFET

IEEE Access, 2020
The negative bias temperature instability (NBTI) mechanisms for Core and input/output (I/O) devices from a 130 nm partially-depleted silicon on insulator (PDSOI) technology are investigated.
Chao Peng, Zhifeng Lei, Rui Gao, Zhangang Zhang, Yiqiang Chen, Yunfei En, Yun Huang   +6 more
doaj   +1 more source

Effect of vein-bionic surface textures on the tribological behavior of cylindrical roller thrust bearing under starved lubrication

Scientific Reports, 2021
To reveal the effect of vein-bionic surface textures on the tribological behavior of cylindrical roller thrust bearings (CRTBs) under starved lubrication, six kinds of leaves (Forsythia, Clausena lansiu, Ash, Purple leaf plum, Pipal and Apricot) were ...
Risheng Long, Chao Zhao, Yimin Zhang, Yibing Wang, Yueyong Wang   +4 more
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A Method for Safety Evaluation of Train Braking System Considering Multiple Types of Preventive Maintenance Cycles

Applied Sciences, 2022
The train braking system with redundant components has an essential effect on driver safety. In this paper, we consider the failure of K-out-of-N brake motors during operation and the redundant recovery by preventive maintenance.
Lilei Zhang, Linhan Guo, Ruiyang Li, Yu Wang   +3 more
doaj   +1 more source