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| 1 | Surface removal of a copper thin film in an ultrathin water environment by a molecular dynamics study显示文摘The surface planarity and asperity removal behavior on atomic scale in an ultrathin water environment were studied for a nanoscale process by molecular dynamics simulation.Monolayer atomic removal is achieved under both noncontact and monoatomic layer contact conditions with different water film thicknesses.The newly formed surface is relatively smooth without deformed layers,and no plastic defects are present in the subsurface.The nanoscale processing is governed by the interatomic adhering action during which the water film transmits the loading forces to the Cu surface and thereby results in the migration and removal of the surface atoms.When the scratching depth≥0.5 nm,the abrasive particle squeezes out the water film from the scratching region and scratches the Cu surface directly.This leads to the formation of trenches and ridges,accumulation of chips ahead of the particles,and generation of dislocations within the Cu substrate.This process is mainly governed by the plowing action,leading to the deterioration of the surface quality.This study makes the'0 nm planarity,0 residual defects,and 0 polishing pressure'in a nanoscale process more achievable and is helpful in understanding the nanoscale removal of materials for developing an ultra-precision manufacture technology. | Junqin SHI Liang FANG Kun SUN Weixiang PENG Juan GHEN Meng ZHANG | 2020 | Friction2020，8，2： | 3 |
| 2 | Neural-network adaptive controller for nonlinear systems and its application in pneumatic servo systems显示文摘In this paper, a novel control law is presented, which uses neural-network techniques to approximate the affine class nonlinear system having unknown or uncertain dynamics and noise disturbances. It adopts an adaptive control law to adjust the network parameters online and adds another control component according to H-infinity control theory to attenuate the disturbance. This control law is applied to the position tracking control of pneumatic servo systems. Simulation and experimental results show that the tracking precision and convergence speed is obviously superior to the results by using the basic BP-network controller and self-tuning adaptive controller. | Lu LU Fagui LIU Weixiang SHI | 2008 | 控制理论与应用(英文版)2008，6，1： | 2 |
| 3 | A sliding mode variable structure control approach for a pneumatic force servo system显示文摘 | Li Ruihua Meng Guoxiang Li Yijie Shi Weixiang | 2006 | IEEE 6th World Congress on Intelligent Control and Automation2006，，2： | 1 |
| 4 | TRACKING VARIABLE STRUCTURE CONTROL LAW WITH APPLICATION TO ELECTRO-HYDRAULIC SERVO SYSTEMS显示文摘TRACKINGVARIABLESTRUCTURECONTROLLAWWITHAPPLICATIONTOELECTRO-HYDRAULICSERVOSYSTEMSLiYunhua;WangMingwei;WangZhanlin;QiuLihua(Be... | Li Yunhua Wang Mingwei Wang Zhanlin Qiu Lihua (Beijing University of Aeronautics and Astronautics) Shi Weixiang (Xi’an Jiaotong University) | 1996 | Chinese Journal of Mechanical Engineering1996，9，4： | 1 |
| 5 | Effect of MSW Source- Classified Collection on Polycyclic Aromatic Hydrocarbons in Residues from Full-Scale Incineration in China 显示文摘 | Dezhi Shi Xianjin Tang Weixiang Wu etc | 2009 | Water Air and Soil Pollution2009，198，14： | 1 |
| 6 | Radiation characteristics of intermittence exhaust noise显示文摘Aerodynamic characteristics, the noise characteristics in the course of intermittence exhaust are investigated and the expressions for sound pressure level of the noise generated by single-pole source and quadrupole source in the intermittence exhaust noise are established. The effects of all parameters in pneumatic system on the noise are also comprehensively studied. | ZHAO Shengdun SHANG Chunyang ZHAO Zhigang SHI Weixiang (School of Mechanical Engineering, Xi’an Jiaotong University Xi’an 710049) | 2000 | Chinese Journal of Acoustics2000，19，4： | 1 |
| 7 | 2D VARIABLE FACTOR LEARNING CONTROLLER AND ITS APPLICATION IN PNEUMATIC SERVO SYSTEM显示文摘0INTRODUCTIONPneumaticsystemhasbeenwidelyusedinrobot,aircraftandotherequipmentbecauseofitssavingenergy,nopolution,highspeedan... | Lu, Lu Gu, Yiming Shi, Weixiang | 1998 | Chinese Journal of Mechanical Engineering1998，11，4： | 0 |
| 8 | Bioinformatic Analysis of zm ERECTA-LIKE2Gene from Zea mays显示文摘Zm ERECTA-LIKE2 sequences were isolated according to the Zea mays genome. The study indicates that zm ERECTALIKE2 is composed of 2 410 nucleotides and encodes a receptor-like kinase which consists of 774 amino acids by biological analysis. The results show that zm ERECTA-LIKE2 protein contains 13 domains of leucine-rich repeats and belongs to the PKclike family, it is a liposoluble protein, with a conserved transmembrane region. | Wencheng JIA Yihong JI Yanyan ZHANG Jinbao PAN Yongkun YU Min LU Jun HAN Zhanjie NAN Weixiang WANG Liyu SHI Ye WANG Qingpeng SUN | 2016 | Agricultural Science & Technology2016，17，1： | 0 |
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