检索结果-内蒙古大学图书馆

50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Chan, Pak-Ian Sou, Wai-Kit Lam, Chi-Seng State Key Laboratory of Analog and Mixed-Signal VLSI University of Macau China Institute of Microelectronics University of Macau China Department of Electrical and Computer Engineering Faculty of Science and Technology University of Macau China

ISBN: (纸本)9781665464543

In this paper, a model predictive robust control (MPRC) is proposed for a three-phase capacitive-coupling grid-connect inverter (CGCI) to improve the power quality compensation performance under deviating system parameters. A detail stability study and parameter design of the proposed MPRC is provided, while the robustness and power quality compensation performance of the proposed MPRC are verified by the simulation in comparison to the conventional model predictive control (MPC). © 2024 IEEE.

关键词： Predictive control systems

来源：评论

学校读者我要写书评

暂无评论

When Time Interleaving Encounters Oversampling in ADC 17

When Time Interleaving Encounters Oversampling in ADC

引用

17th IEEE International Conference on Solid-state and Integrated Circuit Technology, ICSICT 2024

作者： Guo, Mingqiang Jiang, Dongyang Zhao, Shulin Sin, Sai-Weng Martins, Rui P. University of Macau State-Key Laboratory of Analog and Mixed-Signal VLSI Faculty of Science and Technology Institute of Microelectronics Department of ECE China Instituto Superior Técnico Universidade de Lisboa Portugal

ISBN: (纸本)9798350361834

Time-interleaved ADC architecture is widely used in high-speed applications because this structure can increase the speed of ADC linearly by adding the number of channels. On the other hand, the oversampling technique, especially the technique that combines oversampling and noise shaping, can significantly improve the accuracy of the ADC through a trade-off between speed and resolution. So, what kind of sparks will be produced when time interleaving meets oversampling? This paper will be based on the three works of our research group in recent years, combined with other excellent papers, and try to discuss how to combine the time-interleaved and oversampling to solve the mismatch between the channels of the time-interleaved ADC and break the speed bottleneck through the traditional sigma-delta modulators or noise-shaping SAR ADC. © 2024 IEEE.

关键词： Delta sigma modulation

来源：评论

学校读者我要写书评

暂无评论

A Wireless Charging System with Bipolar Partial Power Conversion for 400V/800V EV Battery 50

A Wireless Charging System with Bipolar Partial Power Conver...

引用

50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Wu, Muxing Iam, Io-Wa Gong, Cheng Lam, Chi-Seng State Key Laboratory of Analog and Mixed-Signal VLSI University of Macau China Institute of Microelectronics University of Macau China Department of Electrical and Computer Engineering Faculty of Science and Technology University of Macau China

ISBN: (纸本)9781665464543

Currently, electric vehicle (EV) battery platforms typically vary in standard, commonly rated at either 800V or 400V. Conventional wireless charging system (WCS) are limited to single voltage level charging, necessitating wireless communication or additional complex circuits for achieving multi-voltage level charging, which can compromise operational stability and overall efficiency. This article proposes a WCS based on the concept of bipolar partial power conversion. By incorporating reversing series switches on the secondary of the DC/DC converter, regulation voltage control enables switching between positive and negative polarity to supply power to either 800V or 400V battery for EV. This approach ensures high power transmission efficiency, without relying on wireless communication, thereby ensuring stable charging process. Furthermore, this article also presents various combinations of bipolar topologies that can be selectively employed based on application requirements. Finally, simulation results validate the feasibility of the proposed 3.2KW WCS. © 2024 IEEE.

关键词： state of charge

来源：评论

学校读者我要写书评

暂无评论

Improved Dead-Beat Control for Single-Phase LC-Coupling Hybrid Active Power Filter (LC-HAPF) 32

Improved Dead-Beat Control for Single-Phase LC-Coupling Hybr...

引用

32nd IEEE International Symposium on Industrial Electronics, ISIE 2023

作者： Chan, Pak-Ian Sou, Wai-Kit Lam, Chi-Seng State Key Laboratory of Analog and Mixed-Signal VLSI University of Macau China Institute of Microelectronics University of Macau China University of Macau Department of Electrical and Computer Engineering China

ISBN: (纸本)9798350399714

In this paper, an improved dead-beat controller (DBC) for a single-phase LC-coupling hybrid active power filter (LC-HAPF) is proposed to achieve both low steady-state error and fast transient response. The conventional DBC has an inherent discretized and predictive error, which can increase the steady-state error. Thus, a signal correction technique is used to reduce the steady-state error. Moreover, the improved DBC is implemented with a coupling capacitor voltage observer to replace the voltage sensor, thus reducing the system cost. After that, the stability analysis and parameter design of the proposed improved DBC for the LC-HAPF are given in detail. Subsequently, to verify the effectiveness of the improved DBC, the simulation results are provided in comparison to the conventional DBC. © 2023 IEEE.

关键词： Power quality

来源：评论

学校读者我要写书评

暂无评论

A 23-nA Quiescent Current Output-Capacitorless LDO Regulator for IoT Devices 15

A 23-nA Quiescent Current Output-Capacitorless LDO Regulator...

引用

15th IEEE International Conference on ASIC, ASICON 2023

作者： Zhou, Shengnan Mao, Xiangyu Huang, Cheng Martins, Rui P. Lu, Yan University of Macau State Key Laboratory of Analog and Mixed-Signal VLSI Institute of Microelectronics and FST-DECE China Iowa State University Department of Electrical and Computer Engineering Ames United States

ISBN: (纸本)9798350312980

This paper presents an ultra-low quiescent current output-capacitorless low dropout regulator (OCL-LDO) with fast transient response. We design a rail-to-rail error amplifier with improved adaptive biasing, which provides a limited bias current at heavy load for better load regulation. The buffer with adaptive biasing and almost zero input-output voltage shift and embedded body-bias, combines the error amplifier and the gate of MP. The proposed LDO is designed in a 65-nm CMOS process. Simulation result shows that the proposed LDO consumes a quiescent current of only 23 nA at a supply voltage of 0.8 V. The voltage undershoot is 98 mV during a 20-mA maximum load transient. And we obtain a FOMT of 0.00023 ps. © 2023 IEEE.

关键词： adaptive biasing internet of things Output-capacitorless LDO rail-to-rail buffer ultra-low quiescent current

来源：评论

学校读者我要写书评

暂无评论

Cross-paradigm data alignment to improve the calibration of asynchronous BCI systems in EEG-based speech imagery 46

Cross-paradigm data alignment to improve the calibration of ...

引用

46th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2024

作者： Li, Mingtao Pun, Sio Hang Chen, Fei University of Macau State Key Laboratory of Analog and Mixed Signal Vlsi China Southern University of Science and Technology Department of Electrical and Electronic Engineering Shenzhen China

ISBN: (纸本)9798350371499

The brain-computer interfaces (BCIs) based on speech imagery with asynchronous (self-paced) paradigms enable users to directly access and manipulate BCIs with more freedom. Compared with the indirect BCIs with traditional synchronous (cue-based) paradigms, the calibration time of asynchronous paradigms was much longer and with the unbalanced number of task states and idle states. This work aimed to improve the calibration of asynchronous BCI systems by applying a data alignment (DA) approach on cue-based and self-paced paradigms. The cue-based paradigm was regarded as the calibration paradigm and the self-paced paradigm was the testing paradigm. The data alignment approach based on the parallel transport mapped their features on the same tangent space. The logistic regression was used as the classifier to classify task states and idle states. The average result with DA was 7.52% higher than that without DA (baseline), which were 78.45% and 70.92%, respectively. Specially, the best classification accuracy was for 91.82% with DA, and the largest improvement in accuracy was 22.92%. These results suggest that it is practical to use a synchronous paradigm as calibration paradigm in asynchronous BCI systems and the data alignment approach has positive impacts on the classification of task states and idle states. © 2024 IEEE.

关键词： Calibration

来源：评论

学校读者我要写书评

暂无评论

UV-assisted ratiometric fiuorescence sensor for one-pot visual detection of Salmonella

引用

Chinese Chemical Letters 2025年第4期36卷 593-599页

作者： Ren Shen Yanmei Fang Chunxiao Yang Quande Wei Pui-In Mak Rui P.Martins Yanwei Jia State-Key Laboratory of Analog and Mixed-Signal VLSI Institute of MicroelectronicsUniversity of MacaoMacaoChina Zhuhai Center for Disease Control and Prevention Zhuhai 519000China Faculty of Science and Technology–ECE University of MacaoMacaoChina On Leave from Instituto Superior Técnico Universidade de LisboaPortugal MoE Frontiers Science Center for Precision Oncology University of MacaoMacaoChina

Rapid diagnosis of Salmonella is crucial for the effective control of food safety incidents, especially in regions with poor hygiene conditions. Polymerase chain reaction(PCR), as a promising tool for Salmonella detection, is facing a lack of simple and fast sensing methods that are compatible with field applications in resource-limited areas. In this work, we developed a sensing approach to identify PCR-amplified Salmonella genomic DNA with the naked eye in a snapshot. Based on the ratiometric fiuorescence signals from SYBR Green Ⅰ and Hydroxyl naphthol blue, positive samples stood out from negative ones with a distinct color pattern under UV exposure. The proposed sensing scheme enabled highly specific identification of Salmonella with a detection limit at the single-copy level. Also, as a supplement to the intuitive naked-eye visualization results, numerical analysis of the colored images was available with a smartphone app to extract RGB values from colored images. This work provides a simple, rapid, and user-friendly solution for PCR identification, which promises great potential in molecular diagnosis of Salmonella and other pathogens in field.

关键词： Bacteria detection Polymerase chain reaction Naked-eye visualization Ratiometric fiuorescence Smartphone app

来源：评论

学校读者我要写书评

暂无评论

A Self Bias-flip Piezoelectric Energy Harvester Array without External Energy Reservoirs achieving 488% Improvement with 4-Ratio Switched-PEH DC-DC Converter 44

A Self Bias-flip Piezoelectric Energy Harvester Array withou...

引用

44th Annual IEEE Custom Integrated Circuits Conference, CICC 2023

作者： Li, Zhen Chen, Zhiyuan Law, Man-Kay Du, Sijun Cheng, Xu Zeng, Xiaoyang Han, Jun Fudan University State Key Laboratory of Asic and System Shanghai China University of Macau State Key Laboratory of Analog and Mixed-Signal Vlsi China Delft University of Technology Department of Microelectronics Delft Netherlands

ISBN: (纸本)9798350399486

With the advent of the lnternet-of-Things (1oT) era, sensor nodes are required in almost all fields to achieve a better interaction between humans and the environment. Piezoelectric energy harvester (PEH), which exhibits an equivalent electrical model of an AC current source /P in parallel with the inherent capacitor CP, is a promising technology to resolve the energy problem of such sensor nodes. Recently, inductor-based rectifiers, capacitor-based rectifiers and hybrid rectifiers have been proposed to improve the energy extraction efficiency of PEH devices [1]-[5]. However, these structures all require the aid of additional capacitors or inductors to achieve bias-flip operation, as illustrated in Fig. 1. These extra passive devices are typically large, which can be a major bottleneck in system-volumeconstrained applications such as MEMS [4]. In response to the above problem, this work proposes a novel 8-phase self bias-flip PEH interface with charge recycling and reusing (SBFRR). By using the C P of 4 PEHs as flipping capacitors, this scheme achieves a high voltage flipping efficiency without using extra energy reservoirs. The 4 C P can also serve as flying capacitors to achieve switched-PEH DC-DC (SPDC) conversion for MPPT, while maintaining a MOPIR of >3.5× with a PEH input voltage (Vp) from 0. 78Vto4.9V. © 2023 IEEE.

关键词： Sensor nodes

来源：评论

学校读者我要写书评

暂无评论

Optimizing Inductive Power Transfer Circular Pad Coils for Electric Vehicles Using Multi-Objective Particle Swarm Optimization 49

Optimizing Inductive Power Transfer Circular Pad Coils for E...

引用

49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023

作者： Wong, Hou-Wa Ieong, Chi-Fong Lam, Chi-Seng University of Macau State Key Laboratory of Analog and Mixed-Signal Vlsi China Institute of Microelectronics University of Macau China University of Macau Faculty of Science and Technology Department of Electrical and Computer Engineering China

ISBN: (纸本)9798350331820

The wireless power transfer (WPT) technology has gained significant attention in recent years due to its potential to provide a convenient and efficient method to charging electronic devices without the need for physical connections. In wireless charging, the inductive coils are significantly important as they are the component that power transfer takes place. In this context, Multi-Objective Particle Swarm Optimization (MOPSO) has emerged as a promising technique for designing WPT coils with improved performance. Aiming to verify the performance of the designed coil, LCC-S compensation topology was utilized as it can provide practical battery charging specifications. © 2023 IEEE.

关键词： Inductive power transmission

来源：评论

学校读者我要写书评

暂无评论

Harmonic Transfer Function Modeling of LCC-S Inductive Power Transfer System

Harmonic Transfer Function Modeling of LCC-S Inductive Power...

引用

2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

作者： Gong, Cheng Ding, Zhaoyi Lam, Chi-Seng University of Macau State Key Laboratory of Analog and Mixed-Signal Vlsi China University of Macau Institute of Microelectronics China University of Macau Faculty of Science and Technology Department of Electrical and Computer Engineering China

ISBN: (纸本)9798350316445

Mathematical model of the inductive power transfer (IPT) systems is essential for stability analysis and control design. Conventional modeling approaches for IPT systems result in high-order models, as each resonant voltage or current is represented by two slowly changing real-valued variables. Alternative modeling methods may decrease the model order, but they are often plagued by drawbacks such as the absence of analytical expressions, reduced generality, and incomplete modeling. Moreover, the harmonic AC components of the IPT system are not well modeled in the existing methods, which affects the analysis accuracy and control optimality. In this paper, a harmonic transfer function (HTF) modeling of the IPT system is proposed, which has good mathematical properties and improved accuracy. First, the circuit configuration and the linear time-varying (LTV) large-signal model are proposed. Then, the derivation of the proposed HTF is comprehensively discussed. Finally, the accuracy of the proposed HTF is verified by simulation and experimental results in comparison with other representative modeling methods, which shows an improved accuracy. © 2023 IEEE.

关键词： harmonics transfer function inductive power transfer system modeling

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：