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Optimal Center-of-Mass Pivot Effect of Spinal Motion in Feline Galloping

Journal of Bionic engineering 2020年第5期17卷 970-977页

作者： Young Kook Kim dongwon Yun LV R&D team Electro-technology R&D CenterLS ELECTRIC Co.LtdCheongju 28437South Korea Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988South Korea

In this paper,we studied the acceleration behavior of a quadruped animal during a galloping *** the development of many quadruped robotic systems has been focused on dynamic movements,it is obvious that guidance from the dynamic behavior of quadruped animals is needed for robotics *** fulfill this demand,this paper deals with analysis of the galloping motions of a domestic cat,which is well known for its excellent acceleration performance among four-legged *** on the planar motion capture environment,the movement data of a galloping feline was acquired and the dynamic motions were estimated using a spring-mass *** particular,the effects of the position and angle of the center-of-mass of the cat,angular displacement of the spine,and angular velocity of the spine were analyzed and are discussed *** this process,it was possible to understand the dynamic movement characteristics of the cat,and to understand the relationships between,and the influences of,these *** this analysis,we provide significant data applicable to the design of joint movements in quadruped robot systems.

关键词： quadrupedalism feline galloping domestic cat center-of-mass

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Effects of oxidation and precursors(lysine,glyoxal and Schiff base)on the formation of Nε-carboxymethyl-lysine in aged,stored and thermally treated chicken meat

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Food Science and Human Wellness 2022年第5期11卷 1252-1258页

作者： Suhong Huang Xiaoli dong Yulong Zhang Ming Huang Yuandong Zheng Jiangsu Collaborative Innovation Center of Meat Production and Processing Quality and Safety ControlCollege of Food Science and TechnologyNanjing Agricultural UniversityNanjing 210095China Jiangsu Province Research Engineering Center for Livestock and Poultry Meat Processing National R&D Center for Poultry Processing TechnologyNanjing Huangjiaoshou Food Science and Technology Co.Ltd.Nanjing 210095China Henan Province Qi County Yongda Food Industry Co. Ltd.Hebi 458000China

Advanced glycation end products(AGEs)might pose health risks,and processing and storage could accelerate the generation of AGEs in ***,limited few reports indicated the changes of AGEs contents in meat during *** this study,the aim is to investigate the oxidation and precursors and their roles in the formation of N^(ε)-carboxymethyl-lysine(CML)in raw and cooked chicken meat after post-mortem ageing and *** post-mortem ageing and storage time increased,the CML content in cooked chicken breast significantly increased from 1.81 mg/kg to 2.00 mg/kg during 0-6 h,and then decreased from 2.00 mg/kg to 1.80 mg/kg during 6 h-1 day,finally increased again during 1-7 days,while the CML contents of raw and cooked leg significantly and continuously increased from 1.78 mg/kg to 2.08 mg/***,CML was extremely positively correlated with fat oxidation(r^(2)=0.793,P<0.01),protein oxidation(r^(2)=0.917,P<0.01)and glyoxal(r^(2)=0.678,P<0.05),and was negatively correlated with lysine(r^(2)=0.536,P<0.05).No significant correlation was observed between the Schiff base and CML.

关键词： Nε-carboxymethyl-lysine Chicken Post-mortem ageing Storage Oxidation Precursors

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research on LLC resonant converter Based on “Wedge” Shape Flat Winding Transformer

Research on LLC Resonant Converter Based on “Wedge” Shape ...

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IEEE International conference on Power and Energy Applications (ICPEA)

作者： Shuai Xue Yugang Yang Jingwei Li Guilin Chen Cheng Li Chunguang ren Xinwei Wei College of Electrical and Power Engineering Taiyuan University of Technology Taiyuan China Dongguan Dazhong Electronics Co. Ltd. R&D Department Dongguan City Dazhong Electronics Co. Ltd Dongguan China

ISBN: (数字)9798350356113

ISBN: (纸本)9798350356120

This paper proposes a novel wedge flat winding with thin inside and thick outside improve the current distribution on the flat winding, reduce the loss of transformer. At the same time, as the distance between windings increases, the parasitic capacitance of the transformer will also become smaller. In this paper, the conductivity formulas of two kinds of windings are given first, then the eddy current loss calculation formulas under dowell model are given, and then the parasitic parameter capacitance model of transformer is given. Finally, Maxwell software was used to simulate the current density distribution, loss and distributed capacitance of the two flat winding for simulation verification. The novel wedge shape flat vertical winding current density distribution is more uniform, and the copper wire utilization rate is higher. At the same time, a 96kHz/ 1152W LLC resonant converter prototype was used to verify the load efficiency of the wedge shape winding under different loads. The efficiency of wedge-shaped flat winding in transformer is higher than that of traditional flat vertical winding, which proves that the performance of the new wedge-shaped winding is better than that of traditional flat winding.

关键词： Heating systems Shape Windings Prototypes resonant converters Voltage Transformers copper Wire Current density

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design Harmonic drive for Application in robot Joint

Design Harmonic Drive for Application in Robot Joint

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2022 International conference on Mechanical and Electronics engineering, ICMEE 2022

作者： Trang, ThanhTrung Pham, ThanhLong Yin, QiNing Wang, QingWei Hu, YueMing Li, WeiGuang School of Automation Science and Engineering South China University of Technology Guangzhou China Faculty of Mechanical Engineering Thai Nguyen University of Technology Thai Nguyen Viet Nam Machinery R&d Technology Center Zhongshan Mltor Cnc Technology Co. Ltd Zhongshan China School of Mechanical and Automotive Engineering South China University of Technology Guangzhou China

ISBN: (纸本)9781665492201

In industrial robot design, selecting a motor and reducer is one of the essential elements in the design process. The typical mechanical reducer type is a gear train or planetary gear set. Unfortunately, the gear train and the planetary gear have a meager gear ratio, while their weight is too heavy, the transmission repetition accuracy is low and has a high backlash. On the other hand, the harmonic reducer system developed from the transmission gear has an elastic strain wave, which gives a better gear ratio per weight than those two gear systems. In this paper, a harmonic gear reducer is designed according to the transmission requirements and applied rotation to the base of a Puma 560 industrial robot. The harmonic drive is designed under gear physical requirements and robot techniques properties. The required gear ratio of the rotary joint of 1/50, gear geometry design, manufacturing, calculation, and simulation of strength, the safety factor, and experimental results have verified the designs. © 2022 IEEE.

关键词： Industrial robots

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Indoor Life Object Monitoring Using UWB radar 4

Indoor Life Object Monitoring Using UWB Radar

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4th IEEE International conference on Automation, Electronics and Electrical engineering, AUTEEE 2021

作者： Shen, Hongming Ma, Jiansu Yin, Hongfang Wang, Xia Chen, Wei Xu, Chen Nantong University School of Information Science and Technology Nantong China Saiyang Electronics Co.Ltd. R&D Department Nantong China Nantong University Medical School Nantong China

ISBN: (纸本)9781665428392

Aiming at non-contact indoor life object monitoring, a method of extracting vital signs by using ultra-wideband (UWB) radar is proposed in this paper. In view of the weak nature of physiological signal, some preprocessing means are applied to improve the signal-to-noise ratio (SNr). Variational Mode decomposition (VMd) algorithm is utilized to extract respiration and heartbeat signal, the crucial problem about proper parameter setting is investigated. Experimental results verify the effectiveness of the proposed scheme, which providing a reliable approach for life monitoring indoor. © 2021 IEEE.

关键词： Ultra-wideband (UWB)

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Overview of Autonomous driving Simulation Environment

Overview of Autonomous Driving Simulation Environment

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International conference on Intelligent Informatics and Biomedical Sciences (ICIIBMS)

作者： Yunxiang Liu Yujie Pan Xinxin Yuan Yuntao Zhao School of Computer Information and Engineering Shanghai Institute Of Technology Shanghai China R&D Department Shanghai Waylancer Automotive Technology Co. Ltd Shanghai China

The goal of many companies is to provide auto drive system that meet SAE Level 5. due to the much more complex software running on these systems than typical high-end cars today, a thorough testing strategy is required. Simulation test is an essential part of the development process of autonomous vehicle. At present, there are many automatic driving simulation platforms. This papper summarizes the development status and existing problems of autonomous driving simulation platforms by organizing them from aspects such as simulation hierarchy, simulation content, and usage, and proposes the development trend of autonomous driving simulation platforms.

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A Novel Modulation Algorithm for Efficient Heating of Air conditioning compressor

A Novel Modulation Algorithm for Efficient Heating of Air Co...

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China International Electrical and Energy conference (CIEEC)

作者： Wenlong Liu Hongming Zhou Tan Long Yunsong Xu ran Bi Bin Hu Guoqiang Zhang Gaolin Wang R&D System GD Midea Air Conditioning Equipment Co. Ltd. Foshan China School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China

ISBN: (数字)9798350359558

ISBN: (纸本)9798350359565

This research aims to improve the heating efficiency of compressor driven air conditioning systems in cold regions to combat the global warming and promote the energy efficiency. This study proposes a novel approach to efficiently heat the compressor by utilizing the losses of the electric motor. The energy conversion process during compressor preheating is analyzed firstly, and then the numerical relationships for the losses generated by the driver and the energy conversion within the compressor motor are established. To distribute energy effectively and adjust the heating power, a novel heating modulation algorithm is proposed. Additionally, the relationship between motor losses and input variables is explored using the finite element analysis. Experimental validation was conducted to determine the effectiveness of the proposed method.

关键词： Air conditioning Frequency modulation Switching frequency Windings Motors Iron Inverters

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Simultaneous achievement of large electrocaloric effect and ultrawide operating temperature range in BaTiO_(3)-based lead-free ceramic

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Journal of Advanced Ceramics 2024年第8期13卷 1234-1241页

作者： Zhaojie Wang Yingzhi Meng Silin Tang Xiang Niu Hongfang Zhang dingyuan Wang Yisong Bai Bialin Peng Xue Chen Qingqing Ke Sheng-Guo Lu Laijun Liu Guangxi Key Lab of Optical and Electronic Functional Materials and Devices Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of ResourcesCollege of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004China School of Microelectronics Science and Technology Sun Yat-sen UniversityZhuhai 519082China Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China School of Physical Science and Technology&Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China Suzhou University of Science and TechnologySuzhou 215009China Qingdao Haier Smart Technology R&D Co. Ltd.Qingdao 266100China School of Advanced Materials and Nanotechnology Xidian UniversityXi'an 710071China Guangxi Key Laboratory of Manufacturing System&Advanced Manufacturing Technology Guilin University of Electronic TechnologyGuilin 541004China

The electrocaloric effect(ECE),known for its environmentally friendly characteristics,holds significant promise for advancing next-generation solid-state refrigeration *** a large ECE along with a wide working temperature range near room temperature remains a key developmental *** this study,we successfully obtained a substantial ECE of 1.78 K and an extensive working temperature range of 103 K(AT>1.52 K)near room temperature in CaZrO_(3)-modified BaTiO_(3) lead-free ferroelectric ***,this achievement was verified using direct *** piezoresponse force microscopy(PFM)results suggest that the broad temperature range is attributed to the formation of ferroelectric microdomains and polar nanoregions(PNrs).Furthermore,X-ray photoelectron spectroscopy(XPS)and ultraviolet-visible(UV-Vis)spectroscopy reveal a decrease in the oxygen vacancy concentration and an increase in the bandgap for higher CaZrO_(3) doping *** changes synergistically enhance the maximum applied electric field,helping to achieve a high-performance EcE near room *** research presents a straightforward and effective approach for achieving high-performance ECEs in BaTiOg lead-free ceramics,offering promising prospects for application in next-generation solid-state refrigeration technologies.

关键词： BaTiO_(3) electrocaloric effect oxygen vacancy band-gap

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Generalization of Autonomous driving Simulation Scenarios with Monte Carlo Sampling

Generalization of Autonomous Driving Simulation Scenarios wi...

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International conference on Intelligent Informatics and Biomedical Sciences (ICIIBMS)

作者： Yunxiang Liu Jianhua Lv Yuntao Zhao School of Computer Science and Information Engineering Shanghai Institute of Technology Shanghai China R&D Department Shanghai Waylancer Automotive Technology CoLtd Shanghai China

This paper investigates the key techniques and model design for autonomous driving scene generalization. Addressing the challenge of adapting generalization parameters to distribution functions, we employ various distribution functions such as normal, uniform, exponential, log-normal, and Weibull distributions. By utilizing Monte Carlo random sampling, we generate generalized parameters conforming to specific distributions. Based on the generated parameters, we use the scenario generation library to generate autonomous driving scene data with uncertainty. The generated scene data is validated through simulation using the ESmini platform, demonstrating high levels of generalization and realism. Future research directions include expanding the selection of distribution functions, optimizing model design and simulation processes to enhance the performance and adaptability of scene generalization.

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The Opportunity of Anti-ferroelectrics in FeFET for Emerging Non-Volatile Memory Applications

The Opportunity of Anti-ferroelectrics in FeFET for Emerging...

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Annual International Symposium on reliability Physics

作者： Hyojun Choi Giuk Kim Hunbeom Shin Yunseok Nam Sanghun Jeon Kwangsoo Kim Suhwan Lim Jongho Woo Wanki Kim daewon Ha Jinho Ahn Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Korea Semiconductor R&D Center Samsung Electronics Co. Ltd Suwon Korea Material Science and Engineering Hanyang University Seoul Korea

ISBN: (数字)9798331504779

ISBN: (纸本)9798331504786

We demonstrate a novel Ferroelectric FET (FeFET) configuration designed to expand memory window (MW) and enhance retention via two approaches: (i) the introduction of a charge trap layer (CTL) and (ii). the adoption of anti-ferroelectric (AFE) material. The retention loss in metal-interlayer (IL)-ferroelectric (FE)-IL-silicon (MIFIS) FeFET is ascribed to the negative feedback loop, involving the de-trap of interface trap charge from gate (Qit‘) and the loss of polarization (P) which mutually accelerates the further loss of the other. Our first approach, CTL on top of FE, provides additional trap sites with deep trap levels which introduces favorable charge (QN) with high stability, thus enhancing both MW and retention. Moreover, by utilizing the high spontaneous polarization (Ps) and low remanent polarization (Pr) nature of AFE, we further improved the retention characteristics by increasing the proportion of QN and decoupling the negative feedback loop. By proposing a new FeFET design with a high MW (~12.9 V), a low operation voltage (+17/-14 V), and enhanced data retention, we suggest that the hafnia-based FeFET can be a big step forward for 3d NANd technology.

关键词： Three-dimensional displays Nonvolatile memory Voltage Logic gates Iron Negative feedback loops reliability FeFETs Thermal stability Physics

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