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2023 9th International Conference on Applied System Innovation (ICASI)最新文献

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A Soft-Switching Single-Phase Three-Arm Double Conversion Voltage Regulator 一种软开关单相三臂双转换稳压器
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179598
Maoh-Chin Jiang, Kao-Yi Lu, Bo-Xun Chen
This paper proposes a soft-switching single-phase three-arm double-conversion voltage regulator that can solve abnormal voltage problems. The proposed voltage regulator consists of a three-arm topology operating as an ac to dc converter and a dc to ac inverter. Different from the traditional four-arm topology, the proposed three-arm topology not only reduces the number of main switches but also improves the system’s reliability. Using simple resonant circuits, all main switches of the high-frequency arm operate with zero voltage on and all auxiliary switches operate with zero current off. Some steady-state and transient simulation results are given to verify the effectiveness of the proposed voltage regulator.
本文提出了一种解决电压异常问题的软开关单相三臂双转换稳压器。所提出的电压调节器由三臂拓扑组成,作为交流到直流转换器和直流到交流逆变器。与传统的四臂拓扑结构不同,本文提出的三臂拓扑结构不仅减少了主开关的数量,而且提高了系统的可靠性。使用简单的谐振电路,高频臂的所有主开关在零电压下工作,所有辅助开关在零电流下工作。给出了稳态和暂态仿真结果,验证了该稳压器的有效性。
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引用次数: 0
Analysis on the Effect of Number of Poles and Thickness of Permanent Magnet in PMBLDC Motor 永磁无刷直流电动机磁极数和永磁体厚度的影响分析
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179502
Chun-Yu Hsiao, Soe Min Htet, Guan Han Lin, T. Yang, Mu-Shin Lu
The significance of permanent magnet brushless DC motors in various industrial applications has prompted researchers to optimize their design for superior efficiency. The paper proposes an optimized PMBLDC motor for 2000 rpm and 1.414A. The designed prototype values are simulated and analyzed using JMAG Designer and Express. The study compares the performance of the Arnold-NdFeB Magnet and the Hitachi Metals-NdFeB Magnet, considering the number of poles between 2 and 4, in terms of torque, flux density, efficiency, power factor, phase voltage, and magnetomotive force. The results demonstrate that the Hitachi Metals-NdFeB magnet, which has 6 slots, 4 poles, and 2 mm, is 13% more efficient than the 2 poles of Arnold-NdFeB magnet.
永磁无刷直流电动机在各种工业应用中的重要性促使研究人员对其设计进行优化,以获得更高的效率。本文提出了一种优化的PMBLDC电机,转速为2000 rpm,功率为1.414A。利用JMAG Designer和Express对设计的原型值进行了仿真和分析。该研究比较了Arnold-NdFeB磁体和日立金属- ndfeb磁体在转矩、磁通密度、效率、功率因数、相电压和磁动势方面的性能,考虑了2到4之间的极数。结果表明,6槽4极2 mm的日立金属钕铁硼磁体的效率比2极Arnold-NdFeB磁体高13%。
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引用次数: 0
Fourier-Legendre series neural networks for regression 傅里叶-勒让德级数回归神经网络
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179588
D. Le, Li-Jeng Huang, Shyh-Haur Chen
In this study, an effective artificial neural network (ANN) using Fourier-Legendre series expansions for hidden neurons are successfully proposed, named FLSNN. The performance of the FLSNN was examined for regulation problems in machine learning applications. The results of two numerical examples of Boston price regulation problems using FLSNN are compared with classical well-known two ANNs, i.e. the backward propagation neural networks (BPANN) and radial basis function neural networks (RBFNN). It is shown that FLS offers high R-square in regression analyses.
本文成功地提出了一种利用傅里叶-勒让德级数展开隐藏神经元的有效人工神经网络,命名为FLSNN。研究了FLSNN的性能,以解决机器学习应用中的调节问题。将两个基于FLSNN的波士顿价格调节问题的数值算例的结果与经典的两种神经网络,即反向传播神经网络(BPANN)和径向基函数神经网络(RBFNN)进行了比较。结果表明,FLS在回归分析中具有较高的r平方。
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引用次数: 0
High Stability and Long Afterglow of Green Strontium Aluminates Composed of SrAl2O4:Eu2+ and SrAl12O19:Eu2+ Crystals 由SrAl2O4:Eu2+和SrAl12O19:Eu2+晶体组成的绿色铝酸锶的高稳定性和长余辉
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179510
Su-Hua Yang, Chia-Ho Wang, Kai Zhan, C. Ho
This paper presents the stability and afterglow of strontium aluminates (SAO) consisting of SrAl2O4:Eu2+ and SrAl12O19:Eu2+. The maximum energy absorption and emission peaks were at 364 and 517 nm, respectively. Upon increasing the Eu2+ concentration, the decay time of SAO:Eu2+ decreased from 46.09 to 13.35 s. When the phosphor was heated to 110°C, the luminescence intensity decreased by only 10%. Furthermore, the SAO:Eu2+ exhibited high moisture resistance and long rechargeable persistent luminescence, hence, it is a promising material for digital optical data storage applications.
本文研究了由SrAl2O4:Eu2+和SrAl12O19:Eu2+组成的铝酸锶(SAO)的稳定性和余辉。最大能量吸收峰在364 nm处,最大发射峰在517 nm处。随着Eu2+浓度的增加,SAO:Eu2+的衰变时间从46.09 s减少到13.35 s。当荧光粉加热到110℃时,发光强度仅下降10%。此外,SAO:Eu2+具有较高的耐湿性和长时间的可充电持续发光性能,因此,它是一种很有前途的数字光学数据存储材料。
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引用次数: 0
Analysis of Eye-tracking System Based on Diffractive Waveguide 基于衍射波导的眼动追踪系统分析
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179543
F-L Hsiao, Wei-Ling Lin, Wei-Chia Su, S. Zhou, Y. Tsai, W. Lin
In this study, we proposed the method to conceal the eye-track camera. The image of the user’s eye propagates via the waveguide combiner. The aberration caused by the waveguide was analyzed via ray-tracing method. Furthermore, we also discuss the method to compensate for the aberration and enhance the image quality.
在本研究中,我们提出了隐藏眼动轨迹摄像机的方法。用户眼睛的图像通过波导合并器传播。采用射线追迹法分析了波导引起的像差。此外,我们还讨论了补偿像差和提高图像质量的方法。
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引用次数: 0
An AIOT-based Evaluator Design for Sesame Oil 基于aiot的香油评价器设计
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179555
Hao-Hsiang Ku, Ching-Fu Lung, Ching-Ho Chi
Sesame oil is a commonly used as a seasoning oil. The edible oil quality is usually determined by chemical indexes, including acid value, peroxide value and p-anisidine value. It is difficult for a user to test whether a sesame oil is bad. Hence, this study designs an AIOT-based Sesame Oil Evaluator, which is called ASOE, composed of ten gas sensors and a machine learning inference engine. Ten gas sensors sense ethanol, methane, hydrogen sulphide, and ammonia. Sensed data is analyzed by the Linear Discriminant Analysis (LDA). Evaluation results indicate that the correction rate of identifying one to nine week-old sesame oil by LDA is 86%. ASOE can help a user easily and quickly evaluate the quality of a sesame oil to substitute chemical indexes. It can be a reference model for developing a food flavoring oil detector in the future.
芝麻油是一种常用的调味油。食用油的品质通常由化学指标来确定,包括酸值、过氧化值和对茴香胺值。使用者很难测试香油是否有害。因此,本研究设计了一个基于aiot的芝麻油评估器,称为ASOE,由十个气体传感器和一个机器学习推理引擎组成。十个气体传感器检测乙醇、甲烷、硫化氢和氨。通过线性判别分析(LDA)对传感数据进行分析。评价结果表明,LDA对1 ~ 9周龄香油的鉴别正确率为86%。ASOE可以代替化学指标,方便快捷地评价香油的质量。为今后研制食品调味油检测仪提供了参考模型。
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引用次数: 0
Reinforcement Learning for Stock Price Trading with Keywords in Google Trends 基于Google趋势关键词的股票价格交易强化学习
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179534
S. D. You, Po-Yuan Hsiao, Shengzhe Tsai
In this paper, we apply the Proximal Policy optimization (PPO) algorithm to train an agent for automated stock trading. In additional to the conventional trading indicators, we also add the strength of keywords obtained from the Google Trends for training the agent. We conduct two experiments to test the effectiveness of adding keywords. The first experiment uses general keywords, such as inflation. The second experiment uses stock-specific keywords, such as AAPL for trading apple stock. The experimental results confirm that the proposed approach can improve trading performance.
在本文中,我们应用最邻近策略优化(PPO)算法来训练一个自动股票交易代理。除了传统的交易指标外,我们还加入了从Google趋势中获得的关键词强度来训练代理。我们通过两个实验来测试添加关键词的有效性。第一个实验使用了通用关键词,比如通货膨胀。第二个实验使用特定于股票的关键词,比如用AAPL来交易苹果股票。实验结果表明,该方法可以提高交易性能。
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引用次数: 0
A High Performance Computing Platform for Big Biological Data Analysis 生物大数据分析的高性能计算平台
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179527
Chang-Wei Yeh, Chieh-Wei Huang, C. Yang, Yu-Tai Wang
With the rapid progress of high-throughput sequencing projects, biological data is growing exponentially, creating a need for efficient and scalable algorithms and high-performance computing (HPC) platforms for big biological data analysis. However, traditional HPC platforms are inadequate for meeting the demand for rapid data analysis tasks in bioinformatics research. Analyzing biological sequence data is challenging due to its complexity and long computing time. This poses challenges for researchers to gain a deep understanding of biological functions. Thus, this research presents a large-scale biological data analysis platform enabled by an HPC infrastructure for genomic sequencing data and protein structure analysis. This study lists the characteristics of big biological data and traditional computing platforms, provides a reconfigurable HPC platform for biological data analysis applications. A practical case of HPC platforms for big biological data analytics in Taiwan is also presented. By using a reconfigurable HPC platform, the computational bottleneck can be removed, and data analysis can be accelerated. The platform enables researchers to gain profound insights into the deepest biological functions by addressing the challenges of big biological data analysis.
随着高通量测序项目的快速发展,生物数据呈指数级增长,需要高效、可扩展的算法和高性能计算(HPC)平台来进行大生物数据分析。然而,传统的高性能计算平台已不能满足生物信息学研究中对快速数据分析任务的需求。生物序列数据分析由于其复杂性和较长的计算时间而具有挑战性。这对研究人员深入了解生物功能提出了挑战。因此,本研究提出了一个基于HPC基础设施的大规模生物数据分析平台,用于基因组测序数据和蛋白质结构分析。本研究列举了生物大数据与传统计算平台的特点,为生物数据分析应用提供了一个可重构的高性能计算平台。本文还介绍了台湾HPC平台应用于生物大数据分析的实际案例。通过使用可重构的高性能计算平台,可以消除计算瓶颈,加快数据分析速度。该平台通过解决大生物数据分析的挑战,使研究人员能够深入了解最深层的生物功能。
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引用次数: 0
Development of a High-Power-Density Quasi-Resonant Flyback Power Converter 高功率密度准谐振反激功率变换器的研制
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179498
Jyun Lin, Kuo-Yuan Lo
The purpose of this paper is to develop a high-power-density flyback converter with quasi-resonant (QR) topology. QR topology has the valley-switching characteristics can improve the conversion efficiency with higher switching frequency. Therefore, the volume of magnetic components can be reduced. In this paper, a dynamic valley-switching control strategy is proposed to improve the switching loss for different load conditions. In addition, the synchronous rectification technology is used to reduce the secondary side conduction loss and switching loss. Finally, a 100-W QR flyback prototype is developed and built to verify the proposed control strategy and theoretical analysis. The specifications include input voltage range of 12 V to 36 V and output voltage of 24 V. As demonstrated in the prototype’s experimental results, the peak value of the conversion efficiency is 94.3%, and the power density is about 144 W/in3
本文的目的是开发一种具有准谐振(QR)拓扑结构的高功率密度反激变换器。QR拓扑具有谷开关特性,可以在更高的开关频率下提高转换效率。因此,磁性元件的体积可以减少。本文提出了一种动态山谷切换控制策略,以改善不同负载条件下的切换损耗。此外,采用同步整流技术降低了二次侧导通损耗和开关损耗。最后,开发并构建了一个100 w QR反激样机,以验证所提出的控制策略和理论分析。规格包括输入电压范围12v ~ 36v,输出电压范围24v。样机的实验结果表明,转换效率峰值为94.3%,功率密度约为144 W/in3
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引用次数: 0
Modular high-frequency multi-winding battery equalizer for a large number of batteries 模块化高频多绕组电池均衡器,适用于大量电池
Pub Date : 2023-04-21 DOI: 10.1109/ICASI57738.2023.10179580
C. Hua, Zhe-Wei Zhang, Y. Hsieh
Both electric vehicles and energy storage systems need to use a large number of batteries, and the current research on batteries is quite diverse. This study presents a modular high-frequency multi-winding battery cell equalizer for a large number of batteries. In order to increase the power density of the circuit and reduce the size, the switching frequency is increased by using parasitic elements to participate in resonance. Increasing the switching frequency to lMHz, and adding a resonant network to achieve soft switching and reduce switch stress for the converter. The proposed multi-winding design allows battery equalization from any cell to any cell, and the modular architecture can improve the flexibility of the converter. This research uses POWER SIM circuit simulation software to investigate the feasibility of the proposed battery equalizer.
电动汽车和储能系统都需要使用大量的电池,目前对电池的研究相当多样化。本研究提出了一种适用于大量电池的模块化高频多绕组电池均衡器。为了提高电路的功率密度,减小尺寸,利用寄生元件参与谐振,提高开关频率。将开关频率提高到lMHz,并增加谐振网络,实现软开关,降低变换器的开关应力。所提出的多绕组设计允许从任何电池单元到任何电池单元的电池均衡,模块化架构可以提高转换器的灵活性。本研究使用POWER SIM电路仿真软件对所提出的电池均衡器进行可行性研究。
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引用次数: 0
期刊
2023 9th International Conference on Applied System Innovation (ICASI)
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