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High-precision tip positioning composite feedforward control of linear colocated motion systems with Bi-Loop iterative feedforward tuning

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Science China Technological Sciences 2025年

作者： Junyu HU Yourui tao Shanhu LI Xu han College of Mechanical and Vehicle Engineering Hunan University State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology

To enhance the tip positioning accuracy and robustness against disturbances of linear colocated motion systems, a novel composite feedforward (COMFF) control with Bi-Loop iterative feedforward tuning (IFFT) is proposed. The tip positioning error consists of the coupled tip residual vibration and linear motor tracking error. Given the influence of nonlinear friction and load flexibility, the topology of COMFF is designed as decoupled structures so that COMFF can suppress the tip residual vibration and compensate for the linear motor tracking error compatibly. Furthermore, Bi-Loop IFFT is built to improve the robustness of COMFF in high-precision motor tracking performance. In the state space of the linear motor tracking error based on the projection theorem, two loops are performed in parallel along the iteration direction. One is the P-type iteration loop that drives linear motor tracking errors to converge to the zero state. The other is the observation loop constructed by the recursive least square with forgetting factors to accelerate the P-type iteration loop. Driven by the P-type iteration loop with the aid of the observation loop, the proposed COMFF is integrated with fast convergence and high robustness when confronted with model disturbances. The effectiveness of the proposed COMFF combined with Bi-Loop IFFT is validated by experiments.

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A DESIGN OF 0.25μm CMOS SWITCH

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Journal of Electronics(China) 2006年第5期23卷 745-747页

作者： han Lei yang tao Xie Jun Wang Yong You Yu Zhang Bo Chengdu G oldtel Microelectronics Co. Ltd Chengdu 611731 China School of Microelectronics and Solid-State Electronics University of Electronic Science ＆ Technology of China Chengdu 610054 China

Single-Pole Double-Throw （SPDT） broadband switch has been designed in a 0.25gm Complementary Metal Oxide Semiconductor （CMOS） process. To optimize the performance of isolation and insertion loss, based on normal design, the effects of Gate Series Resistances （GSR） on insertion loss and switching time are analyzed for the first time. The compatible GSRs are chosen by the analyses. The fabricated chips were tested and the results show the switch isolation from DC （Direct Current） to 1GHz exhibits 55dB and insertion loss lower than 2.1 dB.

关键词： RF (Radio-Frequency) CMOS (Complementary Metal Oxide Semiconductor) Switch Insertion loss Gate Series Resistance (GSR) Switch time

Studies of the Energy Release of Mitochondria from Sporophyte Cytoplasmic Male Sterile Rice by Differential Scanning Calorimetry

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Wuhan University Journal of Natural Sciences 1999年第4期4卷 498-502页

作者： ZHOU Pei jiang, LING Xing yuan, ZHOU han tao,ZhanG Duang yang, ZHU Ying guo College of Life Seiences, Wuhan University, Wuhan 430072, China QU Song sheng College of Chemistry and Enviromental Science, Wuhan University, Wuhan 430072 , China Wuhan University College of Life Seiences Wuhan China (GRID:grid.49470.3e) (ISNI:***) Wuhan University College of Chemistry and Environmental Science Wuhan China (GRID:grid.49470.3e) (ISNI:***)

The differential scanning calorimetric (DSC)curves of the mitochondria isolated from two varieties of sporophyte cytoplasmic male sterile and their fertile lines of Yie Bai and Ma Xie type rice have been determined. The curves show that the energy is released continuously as temperature rise to 70℃. Some thermodynamic and kinetic parameters of the energy release of the mitochondria have been obtained. The presented results showed that the mitochondria from cytoplasmic male sterile rice released more heat and they had higher energy barrier, less rate, and more complicated mechanism than that of their fertile lines in the energy release process.

关键词： rice mitochondria energy release thermodynamics thermokinetics differential scanning calorimetry (DSC) cytoplasmic male sterile (CMS)

Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing Chen Chao Wu Xiaoling Liu Biao Meng tao Chen Yu han Jun Wang Shibo Xi Yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Activation energy

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智慧家庭App的设备控制页面动态呈现技术

电信科学 2017年第10期33卷 177-184页

作者：郭涛韩建亭杨晓玲中国电信股份有限公司上海研究院上海200122

对智慧家庭App进行设备控制的页面动态呈现技术进行了分析,提出了一种基于轻量级部件引擎的页面动态呈现技术,并结合实际案例进行了开发验证,对优化智慧家庭App设备控制的页面动态呈现技术进行了有益的探索。

关键词：智能部件引擎轻量级智慧家庭 App 动态呈现

Predictive Simulation of Airline Passenger Volume Based on Three Models

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国际计算机前沿大会会议论文集 2018年第2期 29-29页

作者： han-tao yang Xia Liu Sanya Aviation and Tourism College Sanya 572000 Hainan China

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远距离投射照明光源设计

应用光学 2017年第2期38卷 285-291页

作者：吴含笑韩星芮涛杨利华陈璐孟军合天津津航技术物理研究所天津300308

针对车辆回复反射器光度性能的测试需求,为了满足测试光源在远距离照射面上高均匀度光斑的要求,设计一种远距离投射照明光源。光学系统采用了反光碗氙灯光源、导光管以及准直透镜的设计型式,能够实现光能的有效利用及远距离传输,可在远... 详细信息

针对车辆回复反射器光度性能的测试需求,为了满足测试光源在远距离照射面上高均匀度光斑的要求,设计一种远距离投射照明光源。光学系统采用了反光碗氙灯光源、导光管以及准直透镜的设计型式,能够实现光能的有效利用及远距离传输,可在远距离处形成均匀的接近于平行光的照射面。光学系统设计中加入了旋转调节机构,可完成照明系统连续调焦功能,能够实现在远距离照射面上对均匀光斑尺寸进行连续调节,在照明距离为30m^40m的不同照射面上均得到不同尺寸的均匀光斑,照射面上Φ250 mm~Φ300 mm内的光斑不均匀性小于5%。

关键词：照明系统光源导光管不均匀性

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移相变压器研究与应用

贵州电力技术 2017年第3期20卷 88-92,25页

作者：万延康韩松杨涛贵州大学电气工程学院贵州贵阳550025 贵州电网有限责任公司电力科学研究院研究生工作站贵州贵阳550002 贵州电网有限责任公司电力科学研究院贵州贵阳550002

首先对PST进行分类,调查分析国内外PST研究现状和工程应用状况;随后介绍了PST工作原理,并对三类主要潮流控制器进行分析比较。再则,对移相器工程应用中存在的问题进行简要分析,并展望了移相变压器的发展前景。为后续对于PST的深入研发... 详细信息

首先对PST进行分类,调查分析国内外PST研究现状和工程应用状况;随后介绍了PST工作原理,并对三类主要潮流控制器进行分析比较。再则,对移相器工程应用中存在的问题进行简要分析,并展望了移相变压器的发展前景。为后续对于PST的深入研发与应用提供借鉴及参考。

关键词：移相变压器晶闸管 ST UPFC 潮流控制

Rényi divergence on learning with errors

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Science China(Information Sciences) 2020年第9期63卷 124-139页

作者： yang tao han WANG Rui ZhanG State Key Laboratory of Information Security Institute of Information EngineeringChinese Academy of Sciences School of Cyber Security University of Chinese Academy of Sciences

Many lattice-based schemes are built from the hardness of the learning with errors problem, which naturally comes in two flavors: the decision LWE and search LWE. In this paper, we investigate the decision LWE and search LWE by Rényi divergence respectively and obtain the following results: For decision LWE,we apply RD on LWE variants with different error distributions(i.e., center binomial distribution and uniform distribution, which are frequently used in the NIST PQC submissions) and prove the pseudorandomness in theory. As a by-product, we extend the so-called public sampleability property and present an adaptively public sampling property to the application of Rényi divergence on more decision problems. As for search LWE, we improve the classical reduction proof from Gap SVP to LWE. Besides, as an independent interest,we also explore the intrinsic relation between the decision problem and search problem.

关键词： Rényi divergence learning with errors decision problems search problems post-quantum cryptography