IEEE Transactions on Plasma Science最新文献_第7页

An Accident Diagnosis Method of CFETR Water-Cooled Blanket Based on Deep Neural Network

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-30 DOI: 10.1109/TPS.2024.3512522

Tian-Ze Bai;Chang-Hong Peng

{"title":"An Accident Diagnosis Method of CFETR Water-Cooled Blanket Based on Deep Neural Network","authors":"Tian-Ze Bai;Chang-Hong Peng","doi":"10.1109/TPS.2024.3512522","DOIUrl":"https://doi.org/10.1109/TPS.2024.3512522","url":null,"abstract":"The accident diagnosis of fusion blanket is one of the important issues of fusion reactor safety. In this study, the water-cooled blanket system of China Fusion Engineering Test Reactor (CFETR) is modeled using the RELAP5 code. On the basis of steady-state initialization, several design basis accidents were calculated, including in-vessel loss of coolant accident (LOCA), in-box LOCA, ex-vessel LOCA, and loss of flow accident (LOFA). The RELAP5 calculation results are used as training and validation sets for accident diagnosis. A CFETR water-cooled blanket accident diagnosis method was constructed using a deep neural network based on long short-term memory (LSTM). The 34 blanket parameters simulated by the program within 60 s of the accident occurrence are used as inputs to the model. Diagnostic analysis is conducted on the types, locations, and severity of accidents in the water-cooled blanket. The results indicate that the model can accurately diagnose and obtain detailed information about accidents. Even if a random error of ±10% is added to the input data, the accuracy of the accident classification model is not less than 99.3%, and the errors of the LOCA break size and LOFA pump speed do not exceed 3%. The model has been validated as an effective method for fusion blanket accident diagnosis.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 1","pages":"161-166"},"PeriodicalIF":1.3,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Faraday Rotation Measurements in High-Energy-Density Plasmas Using Shaped Laser Beams

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-30 DOI: 10.1109/TPS.2024.3519036

P.-A. Gourdain;A. Bachmann;I. N. Erez;F. Garrett;J. Hraki;S. McGaffigan;I. West-Abdallah;J. R. Young

引用次数: 0

An Arrowhead-Type Microwave Low-Temperature Plasma Jet at Atmospheric Pressure

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-30 DOI: 10.1109/TPS.2024.3515047

Qianyu Wang;Kama Huang

{"title":"An Arrowhead-Type Microwave Low-Temperature Plasma Jet at Atmospheric Pressure","authors":"Qianyu Wang;Kama Huang","doi":"10.1109/TPS.2024.3515047","DOIUrl":"https://doi.org/10.1109/TPS.2024.3515047","url":null,"abstract":"Plasma consists of a collection of ions, electrons, and bound neutral particles, and the whole is a neutral state of matter. Plasma can be divided into two types: high-temperature plasma and low-temperature plasma. Low-temperature plasma is plasma that occurs at room temperature, although the temperature of the electrons is very high. Low-temperature plasma can be used for welding, sterilization, melting, and other applications. In this article, an arrow-shaped microwave low-temperature plasma jet based on a coaxial structure is proposed. The device has the advantages of small volume, low power consumption, high stability, and self-excitation. The plasma length can be varied by changing the velocity of the plasma jet or the microwave power. The argon discharge can be excited at atmospheric pressure with a microwave power of 3.2 W, and its minimum maintenance power is 1.57 W. The optical emission spectra of the plasma show that it contains highly active OH radicals and a large number of energetic particles. Under proper operating conditions, the flame tail treatment of human fingers only heats up to <inline-formula> <tex-math>$36.7~^{circ }$ </tex-math></inline-formula>C for 30 s. This portable device can be efficiently used in medical cosmetology and material surface treatment.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 12","pages":"5533-5537"},"PeriodicalIF":1.3,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multistage Feedback Control Method for Armature Velocity in Electromagnetic Rail Launch

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-30 DOI: 10.1109/TPS.2024.3519166

Yuting Zhang;Zhenchun Wang;Yan Hu;Wenlai Zhang

{"title":"Multistage Feedback Control Method for Armature Velocity in Electromagnetic Rail Launch","authors":"Yuting Zhang;Zhenchun Wang;Yan Hu;Wenlai Zhang","doi":"10.1109/TPS.2024.3519166","DOIUrl":"https://doi.org/10.1109/TPS.2024.3519166","url":null,"abstract":"The stability of armature velocity is one of the crucial indicators for evaluating the performance of electromagnetic launch systems. A multistage control method for armature muzzle velocity is proposed based on the discharge time and quantity of the power module. By analyzing the pulse power supply model, the relationship between the discharge time, quantity, and armature velocity of the pulse power supply module is established. A multistage feedback control algorithm based on pulse discharge is introduced, which includes steps such as stride selection, adjustment of pulse power supply discharge time, and velocity calculation. By adjusting the discharge time and quantity of the pulse power supply according to the difference between the measured velocity at a reference position and the expected velocity, precise control of the armature velocity is achieved. When the armature muzzle velocity reaches 595.85 m/s, the proposed multistage feedback control method can maintain the accuracy of the armature muzzle velocity within 0.83%. The effectiveness of the control method is verified, providing a theoretical foundation for the precise control of armature muzzle velocity in practical launch experiments.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 12","pages":"5649-5656"},"PeriodicalIF":1.3,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neural Network Reconstruction of the Electron Density of High Energy Density Plasmas From Under-Resolved Interferograms

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-30 DOI: 10.1109/TPS.2024.3519032

P.-A. Gourdain;A. Bachmann

{"title":"Neural Network Reconstruction of the Electron Density of High Energy Density Plasmas From Under-Resolved Interferograms","authors":"P.-A. Gourdain;A. Bachmann","doi":"10.1109/TPS.2024.3519032","DOIUrl":"https://doi.org/10.1109/TPS.2024.3519032","url":null,"abstract":"Interferometry can accurately measure the electron density of a high energy density plasma by comparing the phase shift between a laser beam passing through the plasma and a reference beam. While the actual phase shift is continuous, the measured shift has discontinuities, since its measurement is constrained between <inline-formula> <tex-math>$-pi $ </tex-math></inline-formula> and <inline-formula> <tex-math>$pi $ </tex-math></inline-formula>, an effect called “wrapping.” Although many methods have been developed to recover the original, “unwrapped” phase shift, noise and under-sampling often hinder their effectiveness, requiring advanced algorithms to handle imperfect data. Analyzing an interferogram is essentially a pattern recognition task, where radial basis function neural networks (RBFNNs) excel. This work proposes a network architecture designed to unwrap the phase interferograms, even in the presence of significant aliasing and noise. Key aspects of this approach include a three-stage learning process that sequentially eliminates phase discontinuities, the ability to learn directly from the data without requiring a large training set, the ability to mask regions with missing or corrupted data trivially, and a parallel Levenberg-Marquardt algorithm (LMA) that uses local network clustering and global synchronization to accelerate computations.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 12","pages":"5581-5596"},"PeriodicalIF":1.3,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Semiautomated Control System of Microwave Plasma Torch for Waste-to-Energy Treatment

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-30 DOI: 10.1109/TPS.2024.3520485

Hossam A. Gabbar;Elena Villalobos Herra;Daniel Galvan-Perez;Juan Eduardo Esquivel Cruz;Mustafa A. Aldeeb

{"title":"Semiautomated Control System of Microwave Plasma Torch for Waste-to-Energy Treatment","authors":"Hossam A. Gabbar;Elena Villalobos Herra;Daniel Galvan-Perez;Juan Eduardo Esquivel Cruz;Mustafa A. Aldeeb","doi":"10.1109/TPS.2024.3520485","DOIUrl":"https://doi.org/10.1109/TPS.2024.3520485","url":null,"abstract":"Integrating microwave plasma torches (MWPTs) into waste-to-energy systems offers a promising approach to address the challenges of municipal solid waste (MSW) management while enabling efficient energy recovery. However, designing an effective control system for MWPTs is complex and not widely available in current markets. This article presents a novel control system based on a programmable logic controller (PLC), specifically developed to semiautomate the operation of atmospheric MWPT. The system uses a proportional-integral–derivative (PID) control algorithm to precisely regulate the gas flow and plasma conditions, while MODBUS communication technology ensures smooth interaction between components. By addressing key challenges such as unstable plasma ignition and maintaining operational reliability, the proposed system reduces manual intervention, enhances operator safety, and improves scalability for MWPT applications. This work advances the understanding and implementation of automated control in MWPT-based systems, contributing significantly to sustainable waste-to-energy solutions. The proposed solution reduces manual intervention, improves operator safety, and increases the scalability of MWPT applications by addressing important issues such as unstable plasma ignition and maintaining operational reliability. This work contributes significantly to sustainable waste-to-energy solutions by enhancing our understanding and ability to use automated control in MWPT-based systems.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 12","pages":"5573-5580"},"PeriodicalIF":1.3,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of a New De-Icing Method for Wind Turbine Blades Based on Shock Waves Generated by Pulsed Liquid Discharges

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-30 DOI: 10.1109/TPS.2024.3516953

Zhongfeng Zhu;Zhaoxia Peng;Guolin Yang;Zhigang Liu;Cong Xu;Yangyang Fu;Xinxin Wang;Xingliang Jiang;Yutai Li

{"title":"Investigation of a New De-Icing Method for Wind Turbine Blades Based on Shock Waves Generated by Pulsed Liquid Discharges","authors":"Zhongfeng Zhu;Zhaoxia Peng;Guolin Yang;Zhigang Liu;Cong Xu;Yangyang Fu;Xinxin Wang;Xingliang Jiang;Yutai Li","doi":"10.1109/TPS.2024.3516953","DOIUrl":"https://doi.org/10.1109/TPS.2024.3516953","url":null,"abstract":"In response to climate change, an increasing number of countries are setting carbon-neutral and net-zero emission targets. Clean energy is receiving wider attention. Many wind power stations are located in high mountains with abundant wind resources, and their blades have serious ice-covering problems in winter. Currently, there are no widely available solutions. In order to solve this problem, this article proposes a new de-icing method based on shock waves generated by pulsed liquid discharges. This method has never been proposed and experimented with before. The advantage of this method is energy efficiency, requiring only a tiny amount of energy to break up the ice. The structure of the new de-icing device was first designed and tested with liquid discharges. It was verified with unsecured nails that the shock wave generated by the pulsed liquid discharges could be transmitted to the outer surface of the blades. Then, the de-icing experiments were carried out in different blade arrangement directions to confirm the effectiveness of the new de-icing method. Finally, the propagation of the shock wave after its generation with its resulting elastic microdeformation process of the blade is calculated. This study provides a new solution idea for the ice-covering problem of wind turbine blade, which is of great significance to the sustainable development of human society.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 12","pages":"5641-5648"},"PeriodicalIF":1.3,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface Behaviors of NM400 Steel Quenched by Laminar Plasma Jet

IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-30 DOI: 10.1109/TPS.2024.3514605

Xiuquan Cao;Lin Wang;Yong He;Guangzhong Hu

{"title":"Surface Behaviors of NM400 Steel Quenched by Laminar Plasma Jet","authors":"Xiuquan Cao;Lin Wang;Yong He;Guangzhong Hu","doi":"10.1109/TPS.2024.3514605","DOIUrl":"https://doi.org/10.1109/TPS.2024.3514605","url":null,"abstract":"As a commonly used wear resistance material, the NM400 steel is widely used in various mechanical parts. For prolonging the service life of these mechanical parts, various surface quenching methods are always adapted to improve their wear resistance. As a novel surface quenching method, a homemade laminar plasma surface quenching system was used to quench the NM400 steel for studying the quenching mechanism and the coupling mechanism of the main quenching parameters in this article. First, based on the orthogonal experimental design method, the corresponding experiments were conducted to decide the optimal processing conditions by using the orthogonal experimental range analysis. Sequencing, the microstructures, and wear resistance behaviors of the NM400 steel hardened under optimal processing conditions were tested. Besides, for revealing the hardening mechanism of NM400 steel, a corresponding homemade thermal-solid coupling model was built to explore the temperature distribution of the sample. Finally, the corresponding microstructure and wear resistance were discussed in detail based on the temperature field simulation and experimental results. The study results show that: 1) the NM400 steel could get the best-hardened effect under the following processing conditions: the quenching velocity, quenching distance, and arc current are 160 mm/min, 50 mm, and 110 A, respectively; 2) the microstructure in the hardened zone (HZ) is transformed from ferrite and cementite into lath martensite, while a little part of the microstructure in the heat-affected zone (HAZ) is transformed into martensite and residual austenite; and 3) the microhardness and the absorption work of the HZ are improved from 245 HV0.2 to 415 HV0.2 and 7.52 to 8.36 J, respectively, while the volume wear loss rate of the HZ is decreased from 1.13E-5 to 6.16E-6 mm3/(N<inline-formula> <tex-math>$cdot $ </tex-math></inline-formula>m).","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 12","pages":"5561-5572"},"PeriodicalIF":1.3,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-25 DOI: 10.1109/TPS.2024.3519497

引用次数: 0

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IF 1.3 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2024-12-25 DOI: 10.1109/TPS.2024.3515677

引用次数: 0