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PI control based on fuzzy set-point weighting tracking for hydraulic crane boom system

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控制理论与应用（英文版） 2006年第4期4卷 327-330页

作者： Yong YANG An LUO Karl-Erik rydberg college of Automotive and Mechanical Engineering Changsha University of Science and Technology Changsha Hunan 410076 China college of Information Science and Engineering Central South University Changsha Hunan 410083 China college of Electric and Information Engineering Hunan University Changsha Hunan 410082 China Department of Mechanical Engineering Linkoeping University Linkoeping SE-581 83 Sweden

A PI control strategy based on fuzzy set-point weighting following was proposed for the active damping control of a hydraulic crane boom system （HcBS）. Two valve-controlled PI controllers, which include a proportional feedforward controller based on fuzzy set-point weighting following and a limited semi-integrator（LSI）, are designed respectively. LSI is used to limit output signal and to prevent wind up at the low frequency of the spectrum. By using a range camera and an electronic feedback control, the tip damping on the HcBS can be adjusted artificially. a.collaborative control simulation technique of HOPSAN and MATLAB/SIMULINK is applied to the controller design. Simulation results show that the proposed PI control system has less overshoot as well as faster response. The tip damping on the HcBS during operation is improved.

关键词： PI control Fuzzy set-point weighting (FSPW) Limited semi-integrator(LSI) Active damping collaborative control simulation Range camera Hydraulic crane boom system (HcBS)

主动脉瓣狭窄程度影响左房室平面位移而不影响左心室射血分数

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世界核心医学期刊文摘（心脏病学分册） 2005年第2期1卷 37-38页

作者： rydberg E. Gudmundsson P. Kennedy L. 郭宁 Department of car diology MalmUniversity Hospital S-205 02 Malm Sweden Dr.

Aims: To examine how left atrioventricular plane displacement(AVPD), a widely used measure of left ventricular(LV) function, is related to presence and degree of aortic stenosis. Methods and results: cardiac dimensions, LV filling, left A VPD, LV ejection fraction (LVEF), and valve function were assessed by echocardio graphy/Doppler in 182 patients with various cardiac diseases (mean (SD) age 69(1 2) years, 36%women), 49 consecutive with and 133 consecutive without aortic ste nosis. In an analysis of covaria.ce, neither left AVPD nor LVEF was independentl y correlated with the presence of aortic stenosis. However, looking separately a t patients with aortic stenosis, left AVPD (p=0.03) but not LVEF correlated inde pendently with degree of aortic stenosis in multiple linear regression analysis. In patients with aortic stenosis, an abnormal left AVPD had 94%sensitivity and 90%negative predictive value with regard to severe aortic stenosis, compared w ith 56%and 62%, respectively, for LVEF. conclusion: In patients with cardiac d isease, neither left AVPD nor LVEF correlated independently with presence of aor tic stenosis. However, in patients with aortic stenosis, left AVPD but not LVEF correlated with the degree of aortic valve obstruction and left AVPD but not LVE F had high sensitivity and negative predictive value with regard to severe aorti c stenosis. compared with LVEF, left AVPD is an earlier and more sensitive marke r of LV haemodynamic load in patients with aortic stenosis.

关键词：左心室射血分数主动脉瓣狭窄多普勒检测主动脉狭窄充盈量阴性预测值瓣膜功能超声心动图梗阻程度血流动力学

circular rydberg States of Atomic Hydrogen in an Arbitrary Magnetic Field

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communications in Theoretical Physics 2011年第9期56卷 481-486页

作者：赵力波 B.c.Saha 杜孟利 Department of Physics Florida A & M UniversityTallahasseeFlorida 32307USA Institute of Theoretical Physics Chinese Academy of SciencesP.O.Box 2735Beijing 100190China

We report a theoretical scheme using a B-spline basis set to improve the poor computational a.curacy of circular rydberg states of hydrogen atoms in the intermediate magnetic field. This scheme can produce high a.curacy energy levels and valid for an arbitrary magnetic field. Energy levels of hydrogen are presented for circular rydberg states with azimuthal quantum numbers ｜m｜ =10-70 as a function of magnetic field strengths ranging from zero to 2.35 × 10^9 T. The variation of spatial distributions of electron probability densities with magnetic field strengths is discussed and competition between coulomb and magnetic interactions is illustrated.

关键词： hydrogen atom circular rydberg state magnetic field B-spline basis

Single-photon-level light storage with distributed rydberg excitations in cold atoms

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Frontiers of physics 2022年第2期17卷 25-32页

作者： Hanxiao Zhang Jinhui Wu M.Artoni G.c.La Rocca center for Quantum Sciences and School of Physics Northeast Normal UniversityChangchun 130024China Department of Engineering and Information Technology and Istituto Nazionale di Ottica(INO-cNR) Brescia University25133 BresciaItaly Scuola Normale Superiore and cNISM 56126 PisaItaly

We present an improved version of the superatom(SA)model to examine the slow-light dynamics of a few-photons signal field in cold rydberg atoms with van der Waals(vdW)interactions.A main feature of this version is that it promises consistent estimations on total rydberg excitations based on dynamic equations of SAs or *** consider two specific cases in which the incident signal field contains more photons with a smaller detuning or less photons with a larger detuning so as to realize the single-photon-level light *** is found that vdW interactions play a significant role even for the slow-light dynamics of a single-photon signal field as distributed rydberg excitations are inevitable in the picture of dark-state ***,the stored(retrieved)signal field exhibits a.clearly asymmetric(more symmetric)profile because its leading and trailing edges undergo different(identical)traveling journeys,and higher storage/retrieval efficiencies with well preserved profiles apply only to weaker and well detuned signal *** findings are crucial to understand the nontrivial interplay of single-photon-level light storage and distributed rydberg excitations.

关键词： few-photons light storage distributed rydberg excitation cold rydberg atom improved superatom model

OBSERVATION OF rydberg AUTOIONIZING STATE OF cS_2 AND HIGHER EXcITED VIBRATIONAL STATE OF cS_2^+

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chinese Science Bulletin 1989年第17期34卷 1481-1485页

作者：范俊颖 E.PATSILINAKOU c.FOTAKIS Joint Laboratories for Quantum Optics Shanghai Institute of Optics and Fine MechanicsAcademia Sinica Institute of Electronic Structure & Laser P. O. Box 1527 Iraklin Research Center of Crete Greece

I. INTRODUcTION In recent years, the investigation of autoionization processes attracts much attention as MPI （multiphoton Ionization）spectroscopy has developed rapidly. However, much work has been done on atomic system. In comparison, the molecules have richer vibronic structure which makes the resea.ch more complicated. Great attention has been given to the MPI study of cS2 and cS2+. One of the reasons is that the cS2 mole-

关键词： autoionization spin-orbit splitting multiphoton ionization mixing state

Delayed Ionization and Delayed Detachment in Molecules and clusters

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chinese Journal of chemical Physics 2009年第2期22卷 162-170页

作者： F. Lépine B. Baguenard B. concina M. A. Lebeault c. Bordas Université de Lyon F-69522 Lyon France Université Lyon 1 Villeurbanne cNRS UMR 5579 LASIM

The evolution of a molecular system excited above its ionization threshold depends on a number of parameters that include the nature of the excited states and their couplings to the various continua. The general nature of the processes governing this evolution depends also essentially on the complexity of the molecule, more precisely on its size, density of states, and strength of the couplings among the various internal degrees of freedom. In this paper we address the question of the transition between autoionization that prevails in small molecules, and delayed ionization occurring in larger molecules or clusters. This transition is illustrated by autoionization of Na2 rydberg states on one hand, delayed ionization in fullerene c60, and delayed detachment in small cluster anions on the other hand. All processes are studied in the case of nanosecond laser excitation, corresponding to a rather slow deposition of the internal energy.

关键词： Autoionization Autodetachment Thermionic emission

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Ac-PDP中等离子体电场的实验研究

核聚变与等离子体物理 2003年第2期23卷 108-112页

作者：周艳 Ki-Woong Whang J H Yang D c Jeong c H Ha 核工业西南物理研究院成都610041 国立汉城大学

用激光荧光技术直接测量了Ac PDP单元高气压He和He Xe0 1%放电中的电场行为,估算了由放电电场产生的Ac PDP单元上的壁电压。选用高气压下寿命较长的氦的亚稳态2s3S,比较主量子数n=8和n=9的Stark分裂谱,使电场的测量精度提高到10%。电场... 详细信息

用激光荧光技术直接测量了Ac PDP单元高气压He和He Xe0 1%放电中的电场行为,估算了由放电电场产生的Ac PDP单元上的壁电压。选用高气压下寿命较长的氦的亚稳态2s3S,比较主量子数n=8和n=9的Stark分裂谱,使电场的测量精度提高到10%。电场和壁电压的时间分布描述了PDP单元的放电行为。

关键词： Ac-PDP 等离子体电场实验研究激光荧光技术壁电压放电等离子体显示器

Study of the electric field and wall voltage in a high pressure ac-PDP cell by laser induced fluorescence spectroscopy

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chinese Physics B 2004年第6期13卷 789-793页

作者：周艳 K.W.Whang J.H.Yang D.c.Jeong c.H.Ha Y.W.choi SchoolofOptoelectronicInformation UniversityofElectronicScienceandTechnologyofChinaChengdu610054China SchoolofElectricalEngineering SeoulNationalUniversitySan56-1Shinlim-dongKwanak-guSeoul151-742Korea KoreaElectrotechnologyResea.chInstitute Changwon641-600Korea

The electric field in a surface discharge type ac-PDP cell with He or He/Xe(0.1%) mixture has been measured over a wide range of pressure (5 50kP1 using laser induced fluorescence detection. The wall voltage was estimated from the measured electric field. The Stark manifolds of triplet atomic helium rydberg state (2s3S) with principal quantum numbers (n=8 and 9) have been used to measure the electric field, as the lifetime of 2s3S is longer than the single atomic helium rydberg state (2s1S) in high pressure discharge. comparison of the Stark manifolds between the n=9 and n=8shows that the measurement a.curacy of electric field can be increased by 10%. The maximum electric field strength during discharge and the wall voltage at the end of pulse decreases with the increase of pressure. The comparison of He and He/Xe(0.1%) discharge at 13kPa showed that He/Xe gas mixture discharge can a.cumulate more wall charge on MgO surface and the electric field was somewhat higher than those of pure helium discharge during pulse off period under the same discharge conditions.

关键词： plasma display panel laser induced fluorescence electric field measurement

cl_2分子rydberg态及混合rydberg-价态多光子光谱

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物理学报 1992年第3期41卷 387-399页

作者：傅广生 E.Hontzopoulos c.Fotakis 河北大学物理系 Foundation for Resea.ch and Technology-Hellas-Institute of Electronic Structure and Laser 71110 HeraklionCreteGreece

本工作结合多光子离化谱,激光诱导荧光及荧光激发谱技术,仔细研究cl_2分子高激发rydberg态和混合Rydbery-价态的结构及性质,定域了1~1∑_u^+态内区的位置,证明2~1∑_u^+态强的rydberg-价混合特征,发现一新的u对称性rydberg态并建议标识... 详细信息

本工作结合多光子离化谱,激光诱导荧光及荧光激发谱技术,仔细研究cl_2分子高激发rydberg态和混合Rydbery-价态的结构及性质,定域了1~1∑_u^+态内区的位置,证明2~1∑_u^+态强的rydberg-价混合特征,发现一新的u对称性rydberg态并建议标识为~3∑_u态的激发,对三光子激发过程,2~1∑_u^+与1~1∑_u^+态间的相互作用及三次谐波效应对光谱的影响作详细讨论。

关键词：卤素分子激发态电子光谱电子态