检索结果-南通市图书馆

On robustness of an AMB suspended energy storage flywheel platform under characteristic model based all-coefficient adaptive control laws

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2019年第1期20卷 120-130页

作者： Xujun LYU Long DI Zongli LIN College of Engineering Huazhong Agricultural University asml-hmi Charles L.Brown Department of Electrical and Computer Engineering University of Virginia

A characteristic model based all-coefficient adaptive control law was recently implemented on an experimental test rig for high-speed energy storage flywheels suspended on magnetic bearings. Such a control law is an intelligent control law, as its design does not rely on a pre-established mathematical model of a plant but identifies its characteristic model while the plant is being controlled. Extensive numerical simulations and experimental results indicated that this intelligent control law outperforms a μ-synthesis control law, originally designed when the experimental platform was built in terms of their ability to suppress vibration on the high-speed test rig. We further establish, through an extensive simulation, that this intelligent control law possesses considerable robustness with respect to plant uncertainties, external disturbances, and time delay.

关键词： Intelligent control Robustness Uncertainty Disturbance rejection Active magnetic bearings Energy storage flywheels

Characteristic model based all-coefficient adaptive control of an AMB suspended energy storage flywheel test rig

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2018年第11期61卷 113-127页

作者： Xujun LYU Long DI Zongli LIN Yefa HU Huachun WU School of Mechanical and Electronic Engineering Wuhan University of Technology Hubei Provincial Engineering Technology Research Center for Magnetic Suspension asml-hmi 1762 Automation Pkwy 4. Charles L.Brown Department of Electrical and Computer Engineering University of Virginia

Feedback control of active magnetic bearing(AMB) suspended energy storage flywheel systems is critical in the operation of the systems and has been well studied. Both the classical proportional-integralderivative(PID) control design method and modern control theory, such as H∞ control and μ-synthesis,have been explored. PID control is easy to implement but is not effective in handling complex rotordynamics. Modern control design methods usually require a plant model and an accurate characterization of the uncertainties. In each case, few experimental validation results on the closed-loop performance are available because of the costs and the technical challenges associated with the construction of experimental test *** this paper, we apply the characteristic model based all-coefficient adaptive control(ACAC) design method for the stabilization of an AMB suspended flywheel test rig we recently constructed. Both simulation and experimental results demonstrate strong closed-loop performance in spite of the simplicity of the control design and implementation.

关键词： adaptive control characteristic modeling energy storage flywheels active magnetic bearings

The characteristic and dynamic electrocardiogram changes on hyperkalemia in a hemodialysis patient with heart failure:a case report

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2022年第2期19卷 163-166页

作者： Rui ZHAO Xin HAO Fei WANG Jing FENG Jing PAN Ce JING Ming-Ren MA Yan LIU Ling MA Xiao-Qing CAI Department of Cardiology the 940th Hospital of Joint Logistics Support Force of Chinese PLALanzhouChina VIP Outpatient Department of hmi the Second Medical Center of Chinese PLA General HospitalBeijingChina Department of Nephrology the 942th Hospital of Joint Logistics Support Force of Chinese PLALanzhouChina Department of Medical Service the 940th Hospital of Joint Logistics Support Force of Chinese PLALanzhouChina

Hyperkalemia,usually associated with predisposing chronic diseases as heart failure(HF),severe kidney disease or diabetes mellitus(DM),[1]is defined as an elevation of potassium concentration more than 5.5 mmol/L,[2].

关键词： diseases hemodialysis kidney

在线全文

学校读者我要写书评

暂无评论

光刻永恒

半导体技术 2005年第6期30卷 23-27页

作者：程天风 asml China

由于新近的技术突破,先前应用瓶颈在光刻领域得到解决方案。如今浸没式氟化氩(ArF)光刻技术已经被ITRS列为45nm,甚至于32nm节点的关键技术。如果要达到路图指标,新的介面液体,偏振光应用都需要继续研发。实验室的数据也证实了这些理论... 详细信息

由于新近的技术突破,先前应用瓶颈在光刻领域得到解决方案。如今浸没式氟化氩(ArF)光刻技术已经被ITRS列为45nm,甚至于32nm节点的关键技术。如果要达到路图指标,新的介面液体,偏振光应用都需要继续研发。实验室的数据也证实了这些理论。光刻技术可望继续被延伸到2010年。

关键词：光刻技术 2010年技术突破解决方案关键技术浸没式偏振光实验室应用延伸

Application of resist-profile-aware source optimization in 28 nm full chip optical proximity correction

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2017年第7期38卷 83-88页

作者： Jun Zhu David Wei Zhang Chinte Kuo Qing Wang Fang Wei Chenming Zhang Han Chen Daquan He Stephen D.Hsu State Key Laboratory of ASIC and System School of Microelectronics Fudan University Shanghai 200433 China Shanghai Huali Microelectronics Corp. Shanghai 200433 China asml Brion USA

As technology node shrinks, aggressive design rules for contact and other back end of line（BEOL）layers continue to drive the need for more effective full chip patterning optimization. Resist top loss is one of the major challenges for 28 nm and below technology nodes, which can lead to post-etch hotspots that are difficult to predict and eventually degrade the process window significantly. To tackle this problem, we used an advanced programmable illuminator（FlexRay） and Tachyon SMO（Source Mask Optimization） platform to make resistaware source optimization possible, and it is proved to greatly improve the imaging contrast, enhance focus and exposure latitude, and minimize resist top loss thus improving the yield.

关键词： integrated circuits OPC source optimization lithography resist top loss

Ultra-Thin and Flexible Multi-Band Rejection EMI Shield

在线全文

学校读者我要写书评

暂无评论

Journal of Electromagnetic Analysis and Applications 2014年第7期6卷 163-173页

作者： Lin-Biao Wang Jun-Wu Zhang Kye Yak See Tengiz Svimonishvili Instrumentation and Driver hmi Continental Automotive Singapore Pte Ltd. Singapore City Singapore School of Electrical and Electronic Engineering Nanyang Technological University Singapore City Singapore

This paper presents the design and fabrication of an ultra-thin and flexible electromagnetic interference (EMI) shield that is capable of rejecting multiple unwanted frequencies. The design starts with the equivalent circuit model of periodic concentric rings to determine the initial geometrical dimensions of the rings efficiently. Then it followed by full-wave electromagnetic simulation to fine-tune the final dimensions for the desired frequency response. Impacts of various geometrical designs on the EMI shielding performance of the concentric ring design are analyzed and discussed. With these results, an ultra-thin and flexible EMI shield is fabricated using the screen printing technique. Finally, its multi-band rejection performance is validated experimentally. Good correlation between measurement and simulation is demonstrated in this paper.

关键词： Frequency Selective Surfaces Equivalent Circuit Modeling Full Wave Modeling EMI Shielding

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

用于图像传感器制造的光刻技术

中国集成电路 2007年第1期16卷 47-51页

作者： Geoffrey Phillipps Rudy Pellens asml Netherlands B.V asml

引言任何一种数字成像的核心都是图像传感器.它的基本结构包括一个能把光转换为图像的有源像素矩阵.数码相机和带相机的移动电话带动了图像传感器需求市场的快速增长,它们已成为主要IC制造商大量生产的产品之一.

关键词：图像传感器制造商光刻技术数码相机数字成像像素矩阵需求市场光转换

在线全文

学校读者我要写书评

暂无评论

超薄Fe(4)膜磁特性极化中子反射研究

物理学报 2009年第11期58卷 7993-7997页

作者：李天富陈东风王洪立孙凯刘蕴韬中国原子能科学研究院北京102413 德国柏林hmi研究所柏林D-14109

利用分子束外延薄膜生长技术,制备了200V/4Fe/900V/MgO(100)薄膜样品,通过X射线反射和极化中子反射两种测量手段获得了薄膜的表面、界面及各层膜厚的相关结构信息.中子反射结果表明,Fe原子磁矩在室温下约为1.0±0.1μB,随着温度... 详细信息

利用分子束外延薄膜生长技术,制备了200V/4Fe/900V/MgO(100)薄膜样品,通过X射线反射和极化中子反射两种测量手段获得了薄膜的表面、界面及各层膜厚的相关结构信息.中子反射结果表明,Fe原子磁矩在室温下约为1.0±0.1μB,随着温度的降低,Fe原子磁矩增加,在10K时达到1.5±0.1μB.利用指数定律拟合磁矩随温度的变化情况,外推得出4铁薄膜样品的居里温度约为310±30K.

关键词：超薄Fe膜磁特性极化中子反射分子束外延

80nm应用中的高数位孔径,双载具193nm TWINSCAN扫描分步投影机

在线全文

学校读者我要写书评

暂无评论

半导体技术 2004年第2期29卷 7-11,34页

作者：程天风 asml阿斯麦光刻设备有限公司

针对次100nm的生产,asml研发了一个新光刻系统,其中克服了许多底k1解晰度的挑战。其中包含0.85NA双载具193nmTWINSCAN的设计、性能与一些初步的量测数据。80nm的生产必须要有多方面的量测与控制来达到高准确度的线宽(CD)与对准(Overlay... 详细信息

针对次100nm的生产,asml研发了一个新光刻系统,其中克服了许多底k1解晰度的挑战。其中包含0.85NA双载具193nmTWINSCAN的设计、性能与一些初步的量测数据。80nm的生产必须要有多方面的量测与控制来达到高准确度的线宽(CD)与对准(Overlay)的要求水平。本机台拥有高成熟度的双载具平台,稳定的系统动态质(MSD),一惯性的光量递输等功能,幷包含了一个内建侦测回送系统来自动调控投影镜的像差(aberrations),来达到最佳的影像保真度。

关键词：光刻技术 TWINSCAN 光量递输投影机半导体线宽控制