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2023 IEEE International Conference on Real-Time Computing and robotics, RCAR 2023

作者： Li, Yulu Shang, Wanfeng Huang, Wenqiang Liu, Xiaofei Wu, Xinyu South University of Science and Technology of China Shenzhen518055 China Chinese Academy of Sciences Shenzhen Institute of Advanced Technology Shenzhen518055 China Chinese Academy of Sciences Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institute of Advanced Technology Shenzhen518055 China

ISBN: (纸本)9798350327182

Magnetic control technology is increasingly used in various fields to achieve more accurate wireless control. Different magnetic field arrangement modes can be selected for control according to different scenes. To acquiring the high maneuver of magnetic actuator and good application adaptability, Permanent Magnet Halbach array (PMHA) is a good choice as a potential robotic actuator. This paper presents the PMHA has more maneuverability and magnetic intensity than single polar magnets. FEM simulations and experiments are made to analyze the static and dynamic performances. Under the control of an external permanent magnet (EPM), the PMHA can achieve two kinds of rotation around different axises except for linear motion along with six arises. The experiments validate PMHA has the multi-mode motion performances and higher magnetic intensity per volume. The result provides its potential application as robotic actuator. © 2023 IEEE.

关键词： Permanent magnets

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A self-assembled nanomedicine for glucose supply interruption-amplified low-temperature photothermal therapy and anti-prometastatic inflammatory processes of triple-negative breast cancer

Aggregate

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Aggregate 2024年第6期5卷 254-271页

作者： Mingcheng Wang Huixi Yi Zhixiong Zhan Zitong Feng Gang-Gang Yang Yue Zheng Dong-Yang Zhang Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target&Clinical Pharmacology the NMPA and State Key Laboratory of Respiratory Diseasethe Fifth Affiliated Hospital and School of Pharmaceutical SciencesGuangzhou Medical UniversityGuangzhouChina Key Laboratory of Human-Machine-Intelligence Synergic System Research Center for Neural EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina School of Chemistry and Chemical Engineering Anhui University of TechnologyMa’anshanChina Breast Tumor Center Sun Yat-Sen Memorial HospitalSun Yat-Sen UniversityGuangzhouChina

The poor prognosis of triple-negative breast cancer(TNBC)results from its high metastasis,whereas inflammation accompanied by excessive reactive oxygen species(ROS)is prone to aggravate tumor *** photothermal therapy(PTT)has extremely high therapeutic efficiency,the crafty tumor cells allow an increase in the expression of heat shock proteins(HSPs)to limit its effect,and PTT-induced inflammation is also thought to be a potential trigger for tumor ***,myricetin,iron ions,and polyvinylpyrrolidone were utilized to develop nanomedicines by self-assembly strategy for the treatment of metastatic *** nanomedicines with marvelous water solubility and dispersion can inhibit glucose transporter 1 and interfere with mitochondrial function to block the energy supply of tumor cells,achieving starvation therapy on TNBC *** with excellent photothermal conversion properties allow down-regulating the expression of HSPs to enhance the effect of ***,the broad spectrum of ROS scavenging ability of nanomedicines successfully attenuates PTT-induced inflammation as well as influences hypoxia-inducible factors-1α/3-phosphoinositide-dependent protein kinase 1 related pathway through glycometabolism inhibition to reduce tumor cell ***,the nanomedicines have negligible side effects and good clinical application prospects,which provides a valuable paradigm for the treatment of metastatic TNBC through glycometabolism interference,anti-inflammation,starvation,and photothermal synergistic therapy.

关键词： self-assembled glucose transporter glycometabolism photothermal therapy starvation therapy metastasis

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Enhancing interaction performance of soft pneumatic-networks grippers by skeleton topology optimization

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Science China(Technological Sciences) 2021年第12期64卷 2709-2717页

作者： CHEN ShiTong WANG YuSheng LI DeChen CHEN FeiFei ZHU XiangYang Robotics Institute School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghai 200240China

The inherent compliance of soft materials imbues robots,generally referred to as soft robots,with particular advantages in producing adaptive and safe ***,the mainstream design paradigms of soft robots have been focused on pursuing large free motions only,usually at the expense of greatly decreased stiffness,leading to limited capability of withstanding external loads in interactive *** is a pressing need to incorporate the interaction specifications at the design stage to embody soft robots with not only proper deformability but equally importantly,considerable stiffness to perform complex tasks in practical ***,inspired by the dexterity of human hands,we propose a computational design framework for soft grippers with a focus on improving their interaction performance in power grasping or precision grasping *** design paradigm rests on attaching a relatively stiffer skeleton layer to the parametric pneumatic networks based actuator which is widely used due to the geometric advantage,and the skeleton layout is designed for customized interaction conditions by a level set based topology optimization *** expected,the optimized skeleton layouts exhibit specified structural features highly relevant to the predefined concentrated loads for precision grip or distributed loads for power grip,which physically implies the compromise between deformability and *** the interaction forces are difficult to measure in situ,we devise power and precision grasping scenarios and evaluate the critical actuation pressure of the object’s falling *** experiments qualitatively demonstrate the superiority of each specified *** work represents an initial step toward the rational design for interaction in soft robots.

关键词： soft robotics interaction grippers topology optimization

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Prototype Design and Efficiency Analysis of a Novel Robot Drive Based on 3K-H-V Topology

arXiv

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arXiv 2022年

作者： Qi, Le Yang, Dapeng Cao, Baoshi Li, Zhiqi Gu, Yikun Xie, Zongwu Liu, Hong The State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin150080 China

Robot actuators directly affect the performance of robots, and robot drives directly affect the performance of robot actuators. With the development of robotics, robots have put higher requirements on robot drives, such as high stiffness, high accuracy, high loading, high efficiency, low backlash, compact size, and hollow structure. In order to meet the demand development of robot actuators, this research base proposes a new robot drive based on 3K-H-V topology using involute and cycloidal gear shapes, planetary cycloidal drive, from the perspective of drive topology and through the design idea of decoupling. In this study, the reduction ratio and the efficiency model of the 3K-H-V topology were analyzed, and a prototype planetary cycloidal actuator was designed. The feasibility of the drive is initially verified by experimentally concluding that the PCA has a hollow structure, compact size, and high torque density (69 Nm/kg). Copyright © 2022, The Authors. All rights reserved.

关键词： Topology

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A 12.87-dB Gain 10.5-dBm OPldB60-to-66-GHz LNA in 0.15-μm GaAs pHEMT technology

A 12.87-dB Gain 10.5-dBm OPldB60-to-66-GHz LNA in 0.15-μm G...

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2022 IEEE the Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics, PrimeAsia 2022

作者： Li, Xuefeng Wang, Yuting Wu, Tianxiang Chen, Yong Ren, Junyan Ma, Shunli School of Microelectronics Fudan University State Key Laboratory of ASIC and System Shanghai China State Key Laboratory of ASIC and System School of Information Science and Technology Fudan University Shanghai China University of Macau State-Key Laboratory of Analog and Mixed-Signal VLSI and IME/ECE-FST Macao China

ISBN: (纸本)9781665450690

This paper presents a V-band low noise amplifier (LNA) implemented in a 0.15-μm Gallium Arsenide (GaAs) pseudomorphic high electron-mobility transistor (pHEMT) technology. The LNA adopts a three-stage common-source (CS) topology. Each transistor has a bias circuit, and the microstrip-line inductor is used to realize the input noise matching network, the interstage, and the output matching network. Circuit simulations show that our LNA scores a 12.87-dB small-signal gain, the 3-dB bandwidth ranges from 60 GHz to 66 GHz, and the current consumption is 30 mA under a 5-V supply voltage. Its noise figure is 5.9 dB, and the output 1-dB compression point is 10.5 dBm. The chip area is 1.32× 1.5mm2. © 2022 IEEE.

关键词： Low noise amplifiers

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Field effect transistor-based tactile sensors: From sensor configurations to advanced applications

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InfoMat 2023年第1期5卷 1-61页

作者： Jian Wang Shuyan Xu Congcong Zhang Ailing Yin Mingyuan Sun Hongru Yang Chenguo Hu Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of JinanJinanPeople's Republic of China Department of Applied Physics State Key Laboratory of Power Transmission Equipment&System Security and New TechnologyChongqing UniversityChongqingPeople's Republic of China Department of Physics School of Physical Science and TechnologyUniversity of JinanJinanPeople's Republic of China State key Laboratory of Crystal Materials Shandong UniversityJinanPeople's Republic of China

The past several decades have witnessed great progress in high-performance field effect transistors(FET)as one of the most important electronic *** the same time,due to their intrinsic advantages,such as multiparameter accessibility,excellent electric signal amplification function,and ease of large-scale manufacturing,FET as tactile sensors for flexible wear-able devices,artificial intelligence,Internet of Things,and other fields to per-ceive external stimuli has also attracted great attention and become a significant field of general *** importantly,FET has a unique three-terminal structure,which enables its different components to detect external mechanics through different sensing *** one hand,it provides an important platform to shed deep insights into the underlying mechanisms of the tactile *** the other hand,these properties could in turn endow excellent components for the construction of tactile matrix sensor arrays with high *** special emphasis on the configuration of FETs,this review classified and summarized structure-optimized FET tactile sensors with gate,dielectric layer,semiconductor layer,and source/drain electrodes as sensing active components,*** working principles and the state-of-the-art protocols in terms of high-performance tactile sensors are detail discussed and highlighted,the innovative pixel distribution and integration analysis of the transistor sensor matrix array concerning flexible electronics are also *** hope that the introduction of this review can provide some inspiration for future researchers to design and fabricate high-performance FET-based tactile sensor chips for flexible electronics and other fields.

关键词： field-effect transistor flexible electronics tactile matrix sensor array tactile sensors

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HFR Analysis of PMSG-based Wind Farm with SVG Based on Parameter Participation Factor 6

HFR Analysis of PMSG-based Wind Farm with SVG Based on Param...

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6th International Conference on Power and Energy technology, ICPET 2024

作者： Cao, Junqi Cheng, Dong Zhang, Xiaonan Xia, Shiwei Li, Gengyin Sun, Guanqun Cai, Defu State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing China Power Grid Technology Center State Grid Hubei Electric Power Research Institute Wuhan China

ISBN: (纸本)9798350375855

The High Frequency Resonance (HFR) caused by the interaction between the Static Var Generator (SVG) and the direct-drive Permanent Magnet Synchronous Generator (PMSG) threatens the safe and stable operation of PMSG-based wind farm. To solve this problem, the high frequency impedance models of the PMSG and SVG are established respectively, and the impedance model of the system is obtained after considering the collector line and performing equivalence. Based on the impedance model, the two characteristic roots of the system and their corresponding high-frequency resonant modes are solved, and then using the parameter participation factor to measure the effect of different control parameters on the system stability. The parameters with greater influence ability are called the key factors, and the influence of key factors on the resonance modes is analyzed by using Bode diagram and root locus. Finally, the electromagnetic transient simulation model of PMSG-based wind farm was built on MATLAB/Simulink platform to verify the accuracy of the resonance analysis results. © 2024 IEEE.

关键词： Bode diagrams

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Quasi-Parallel Resonant Switched Capacitor DC-DC Converter with Continuous Voltage Regulation Capability

Quasi-Parallel Resonant Switched Capacitor DC-DC Converter w...

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2024 IEEE Energy Conversion Congress and Exposition, ECCE 2024

作者： Qi, Jingjing Wu, Xuezhi Xu, Wenzheng Sun, Kai Tsinghua University State Key Laboratory of Power System Operation and Control Department of Electrical Engineering Beijing China Beijing Jiaotong University National Active Distribution Network Technology Research Center Beijing China

ISBN: (纸本)9798350376067

Resonant switched capacitor converters have the advantages of small size, light weight and high efficiency, but have poor voltage regulation ability. To overcome this problem, a quasi-parallel resonant switched capacitor DC-DC converter is proposed in this paper, which mainly incorporates a resonant switched capacitor converter with soft-switching and variable voltage ratio and a Buck converter. Most of the power can be transmitted by the resonant switched capacitor converter, while the Buck converter is responsible for output voltage regulation. In addition, the voltage ratio of the resonant switched capacitor converter can be flexibly changed base on the input voltage, which is beneficial for Buck converter to always handle a small portion of power. Furthermore, input voltage feedforward control is incorporated to suppress the input voltage disturbance. The proposed converter can not only continuously regulate the voltage over a wide range, but also perform high efficiency and achieve rapid dynamic response. The operating principle of the converter is introduced, the circuit characteristic is analyzed, and the correctness of the theoretical analysis is verified by experiments. © 2024 IEEE.

关键词： Capacitor bank

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Porous bio-high entropy alloy scaffolds fabricated by direct ink writing

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Journal of Materials Science & technology 2023年第26期157卷 21-29页

作者： Guangbin Zhao Xiaoxi Shao Qingxian Zhang Yanlong Wu Yaning Wang Xu Chen Hang Tian Yaxiong Liu Yanpu Liu Bingheng Lu State Key Laboratory for Manufacturing System Engineering School of Mechanical EngineeringXi’an Jiaotong UniversityXi’an 710054China State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases Department of Oral and Maxillofacial SurgerySchool of StomatologyThe Fourth Military Medical UniversityXi’an 710032China School of Mechatronic Engineering and Automation Foshan UniversityFoshan 528000China Ji Hua Laboratory Foshan 528200China College of Mechanical Engineering Xi’an University of Science and TechnologyXi’an 710054China

Porous tantalum-titanium-niobium-zirconium(Ta-Ti-Nb-Zr)bio-high entropy alloy(bioHEA)scaffolds are fabricated using direct ink writing 3D printing technology in this study.A composite ink is prepared using four metal powders as raw materials:Ta,Ti,Nb and *** extrusion is used to build 3D scaf-folds with interconnected porous structures at room temperature,which are then sintered in a vacuum *** interdiffusion of metal elements yields porous bioHEA scaffolds with a body-centered cubic(BCC)*** fabricated scaffolds have uniform compositions with a significant alloying ef-fect and good *** scaffolds have a compressive strength of 70.08-149.95 MPa and an elastic modulus of 0.18-0.64 GPa,indicating that the mechanical properties can be controlled over a wide *** scaffolds have a compressive strength close to that of human cortical bone and thus meet the requirements for porous structure characteristics and biological and mechanical properties of orthopedic implants.

关键词： Direct ink writing Bio-high entropy alloy Porous scaffolds Sintering Biocompatibility Orthopedic applications

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A Software-Defined Reconfigurable Battery system Prototype 29

A Software-Defined Reconfigurable Battery System Prototype

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29th IEEE Asia Pacific Conference on Communications, APCC 2024

作者： Jin, Siyu Liu, Baochang Zhou, Yanglin Liang, Junrui Ci, Song Tsinghua University Department of Electrical Engineering Beijing China ShanghaiTech University School of Information Science and Technology Shanghai China Tsinghua University State Key Laboratory of Power System Operation and Control Beijing China

ISBN: (纸本)9798331517816

In the energy internet era, distributed energy storage systems will be widely used in various industrial, commercial, and residential scenarios. However, the modeling of energy flow and the digital flow of information operate on different temporal and spatial scales in traditional energy storage systems, lacking deep integration between energy flow and information flow. This prevents it from completely addressing the complex battery cell balancing and low safety issues in current distributed energy storage systems. The proposal of software-defined energy storage provides a new approach to solve the inherent problems in the battery industry by introducing the idea of internet shielding terminal differences into energy storage system. We proposed a software-defined reconfiguration battery system (SRBS) in this paper, which can manage different types of energy storage media to adapt to varying loads and operating conditions. Energy-type batteries, power-type batteries, and supercapacitors are integrated together to form an efficient and safe energy storage and power supply system. The hardware architecture and software control method of SRBS are described in detail. Finally, a real-world prototype is charged and discharged to show the successful coexistence and operation of different energy storage media within a single system. © 2024 IEEE.

关键词： Battery management systems

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