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Visual Feedback Disturbance Rejection Control for an Amphibious Bionic Stingray Under Actuator Saturation

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IEEE/CAA Journal of Automatica Sinica 2023年第2期10卷 566-568页

作者： Haiyan Cheng bin fang Qing Liu Jinhua Zhang Jun Hong the Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System Xi’an Jiaotong UniversityXi’an 710049China the School of Automation and Information Engineering Xi’an University of TechnologyXi’an 710048China

Dear Editor,This letter is concerned with visual feedback disturbance rejection control for an amphibious bionic stingray subject to actuator saturation with internal and external disturbances. A visual feedback control method is designed for a dynamic nonlinear system on yaw angle of the amphibious bionic stingray via a finite-time extended-stateobserver,which is proved to achieve finite-time stability via a Lyapunov method. Finally, simulation results verify the effectiveness on the visual feedback control method.

关键词： Visual concerned saturation

Performance Evaluation of Memory-Centric ARMv8 Many-Core Architectures:A Case Study with Phytium 2000+

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Journal of Computer Science & Technology 2021年第1期36卷 33-43页

作者： Jian-bin fang Xiang-Ke Liao Chun Huang De-Zun Dong College of Computer National University of Defense TechnologyChangsha 410073China

This article presents a comprehensive performance evaluation of Phytium 2000+,an ARMv8-based 64-core *** focus on the cache and memory subsystems,analyzing the characteristics that impact the high-performance computing *** provide insights into the memory-relevant performance behaviours of the Phytium 2000+system through *** the help of the well-known roofline model,we analyze the Phytium 2000+system,taking both memory accesses and computations into *** on the knowledge gained from these micro-benchmarks,we evaluate two applications and use them to assess the capabilities of the Phytium 2000+*** results show that the ARMv8-based many-core system is capable of delivering high performance for a wide range of scientific kernels.

关键词： many-core architecture memory-centric design performance evaluation

Genetic Polymorphisms of Nine X-STR Loci in Four Population Groups from Inner Mongolia, China

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Genomics, Proteomics & Bioinformatics 2007年第1期5卷 59-65页

作者： Qiao-fang Hou bin Yu Sheng-bin Li Department of Forensic Sciences Medical College of Xi＇an Jiaotong University/Key Laboratory of Forensic Sciences Ministry of Health/Key Laboratory of Environment and Genes Related to Diseases Ministry of Education Xi＇an Jiaotong University Xi＇an 710061 China.

Nine short tandem repeat （STR） markers on the X chromosome （DXS101, DXS6789, DXS6799, DXS6804, DXST132, DXST133, DXS7423, DXS8378, and HPRTB） were analyzed in four population groups （Mongol, Ewenki, Oroqen, and Daur） from Inner Mongolia, China, in order to learn about the genetic diversity, forensic suitability, and possible genetic affinities of the populations. Frequency estimates, Hardy-Weinberg equilibrium, and other parameters of forensic interest were computed. The results revealed that the nine markers have a moderate degree of variability in the population groups. Most heterozygosity values for the nine loci range from 0.480 to 0.891, and there are evident differences of genetic variability among the populations. A UPGMA tree constructed on the basis of the generated data shows very low genetic distance betweent Mongol and Han （Xi＇an） populations. Our results based on genetic distance analysis are consistent with the results of earlier studies based on linguistics and the immigration history and origin of these populations. The minisatellite loci on the X chromosome studied here are not only useful in showing significant genetic variation between the populations, but also are suitable for human identity testing among Inner Mongolian populations.

关键词： X chromosome STR genetic polymorphism genetic distance Inner Mongolian populations

Magnetometer calibration algorithm based on ellipsoid constraint

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High Technology Letters 2015年第4期21卷 407-413页

作者：董明杰 Chou Wusheng fang bin Robotics Institute Beijing University of Aeronautics and Astronautics

Calibration of magnetometer is an essential part to obtain high measurement ***,the existing calibration methods are basically the calibration of all attitudes,which means tough work when the magnetometer is applied in strapdown inertial navigation system(SINS).So a quick,easy and effective calibration algorithm is developed based on the ellipsoid constraint to calibrate *** this paper,the measuring principle and error characteristic of the magnetometer are analysed to study its magnetic *** the process,a magnetometer calibration model is set up to convert the calibration to ellipsoid fitting based on the characteristic of hard magnetic interference and soft magnetic *** the algorithm is tested by mimic *** result shows that measurement precision is improved after the calibration,and then the magnetometer is installed in a control cabin of an underwater robot which is designed and developed by us,and actual magnetometer calibration experiments are conducted to further verify the validity of the algorithm.

关键词： calibration magnetometer ellipsoid constraint strapdown inertial navigation sys-tem (SINS)

Resistive Switching Characteristics of Al2O3/ZnO Bilayer Thin Films for Flexible Memory Applications

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Journal of Electronic Science and Technology 2017年第4期15卷 364-368页

作者： Zhi-Peng Wu Jun Zhu Li-bin fang State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 610054 China

Unipolar resistive switching behaviors of the ZnO and ALO/ZnO films fabricated on flexible substrates by pulse laser deposition were studied in this paper. The films were deposited at room temperature without post-annealing treatment during the process. Xray diffraction results indicated that ZnO film has a dominant peak at(002). Scanning electron microscopy observation showed a columnar grain structure of the ZnO film to the substrate. The bilayer device of ALO/ZnO films had stable resistive switching behaviors with a good endurance performance of more than 200 cycles, high resistive switching ratio of over 103 at a read voltage of 0.1V, which is better than that of the single oxide layer device of ZnO film. A possible resistive switching filamentary mode was demonstrated in this paper. The conduction mechanisms of high and low resistance states can be explained by space charge limited conduction and Ohmic’s behaviors. The endurance of the bilayer(BL) device was not degraded upon bending cycles, which indicates the potential of the flexible resistive switching random access memory applications.

关键词： Flexible pulsed laser deposition resistive switching ZnO thin film

Non-Equilibrium Grain-Boundary Segregation of Phosphorus And the Effective Time in Step Cooling Process

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材料热处理学报 2004年第5期25卷 263-266页

作者： LIQing-fen LILi LIUEr-bao CUIXiu-fang LIUDong CHENHong-bin CollegeofMechanicalandElectricalEngineering HarbinEngineeringUniversityHarbinChina

The non-equilibrium grain-boundary segregation of phosphorus in step cooling process in an industrial steel, 12CrlMoV, is studied based on the effective-time-method and compared with that in isothermal holding process. The non-equilibrium grain-boundary segregation concentration of phosphorus was measured with Auger Electron Spectroscopy (AES) and calculated based on the kinetic equations of non-equilibrium grain-boundary segregation. Results show that the calculated result is in good accordance with the experimental observation.

关键词：颗粒分离过冷却过程有效时间俄歇电子能谱学

BROADBAND ROTOR NOISE PREDICTION BASED ON A NEW FREQUENCY-DOMAIN FOUMULATION

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Journal of Hydrodynamics 2010年第3期22卷 387-392页

作者： XIE Jian-bo ZHOU Qi-dou fang bin Department of Naval Architecture and Ocean Engineering Naval University of Engineering Wuhan 430033China

This article studies the broadband noise of a rotor in upstream turbulence. A numerical approach is proposed, based on frequency domain, for predicting rotor broadband noise which requires the aerodynamic sources to be integrated over the actual blade surface rather than over the mean-chord surface. The prediction of the radiated rotor broadband noise due to turbulence is made This method is validated through a comparison between numerical predictions and measured data, with a reasonable agreement. Noise level directivity shows that the main lobe is located along the rotor axis, while the minimum noise occurs in the direction vertical to the rotor axis.

关键词： acoustics broadband noise rotor frequency-domain formulation

A novel multi-modal tactile sensor design using thermochromic material

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Science China(Information Sciences) 2019年第11期62卷 189-191页

作者： Fuchun SUN bin fang Hongxiang XUE Huaping LIU Haiming HUANG Department of Computer Science and Technology Tsinghua University Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University College of Information Engineering Shenzhen University

Tactile sensors are important for ensuring robotic perception [1], and their performance directly affects a robot’s capability for performing dexterous operations. These sensors mimic the tactile sensing capability of human hands. This is because the skin of human hands is involved in considerably meticulous works and can provide multi-

关键词： A novel multi-modal tactile sensor design using thermochromic material

Spatiotemporal Pattern of Cultivated Land Pressure and Its Influencing Factors in the Huaihai Economic Zone, China

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Chinese Geographical Science 2023年第2期33卷 287-303页

作者： LI Yi fang bin LI Yurui FENG Weilun YIN Xu School of Geography Nanjing Normal UniversityNanjing 210023China Research Center of New Urbanization and Land Problem Nanjing Normal UniversityNanjing 210023China Jiangsu Provincial Geographic Information Resources Development and Utilization Cooperative Innovation Center Nanjing 210023China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Key Laboratory of Regional Sustainable Development Modeling Chinese Academy of SciencesBeijing 100101China School of Geographic Science Hebei Normal UniversityShijiazhuang 050024China

Cultivated land pressure represents a direct reflection of grain security. Existing relevant studies rarely approached the spatiotemporal pattern of cultivated land pressure or the spatial heterogeneity of its influencing factors from the level of economic *** the Huaihai Economic Zone(HEZ), China for case analysis, this study investigated the spatiotemporal pattern of cultivated land pressure in diverse periods from 2000 to 2018 based on a modified cultivated land pressure index and spatial correlation models. On this basis, it explored the influencing factors of the spatial differentiation of cultivated land pressure in the late stage of the study using geographical detector as well as multi-scale geographically weighted regression model. The results indicated that: 1) in the study period, the global cultivated land pressure index of the study area decreased gradually, but cultivated land pressure increased locally in a significant way, especially in the central and southern Shandong Province;2) the spatial pattern of cultivated land pressure manifested global clustering features. Hot and secondary-hot spots presented a narrowing and clustering trend, whereas cold and secondary-cold spots manifested a spreading and clustering trend;3) average slope, the proportion of non-grain crops, population urbanization rate, and multiple cropping index have significant effects on the spatial differentiation of cultivated land pressure. The former three factors were positively correlated with cultivated land pressure, and the last factor was negatively correlated with cultivated land pressure;and 4) the amount of cultivated land has increased in the central and southern Shandong Province through land consolidation which, nonetheless, failed to improve the grain production. In regards to major grain producing areas similar to the HEZ in China, the authors suggest that great importance should be given to the balance of the quality and quantity of cultivated land, the op

关键词： cultivated land pressure spatiotemporal pattern influencing factors Huaihai Economic Zone China