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第35届中国控制会议

作者： CHEN Shang-shang HE Ying-zi DONG Tian-shu Beijing Institute of Control Engineering Science and Technology on Space Intelligent Control Laboratory

ISBN: (纸本)9789881563910

In this paper, the robust stabilities of linear active disturbance rejection control（LADRC） systems with different structures are studied. Firstly, 4 kinds of extended state observers（ESO） with different orders and inputs and 4 kinds of feedback control laws with different inputs are designed for a general second-order model. Then a necessary and sufficient stability criterion for the closed-loop system is derived from analysis. Based on the criterion, the maximum allowable bound of model parameter uncertainties can be got by solving a search problem. Analysis results of 9 kinds of LADRC systems with the same ESO bandwidths and same feedback control parameters show that low order ESOs and state feedback control laws are helpful to improve the stability of the closed-loop system in the presence of structured model uncertainty.

关键词： Robust stability linear active disturbance rejection control（LADRC） structure extended state observer（ESO）

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A Capture Method based on Series-parallel Manipulator for Satellite On-orbit Service 35

A Capture Method based on Series-parallel Manipulator for Sa...

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第35届中国控制会议

作者： WANG Yong ZHANG Haibo XU Shuanfeng ZHU Zhibin TANG Qiang HE Yingzi WEI Chunling Beijing Institute of Control Engineering Science and Technology on Space Intelligent Control Laboratory

ISBN: (纸本)9781509009107

One of the most challenging tasks for the satellite on-orbit service is to capture a malfunctioned *** are two main ***,as the space manipulator is set on the floating base,its carrying capacity and control precision will be ***,during the process that the servicer and target satellites collide with each other,the collision force and momentum will push the floating target satellite away from the effective service area,and also may break the capture *** solve these problems,this study proposed a capture method based on a novel 7-DOF series-parallel *** method makes use of all the manipulator's 7-DOF in trajectory-planning,importing the cooperative control between the manipulator and the floating base,and also including the force-position *** validity of the proposed method is verified through the system-level and hardware-in-loop simulation on ground.

关键词： On-orbit service space capture Series-parallel manipulator Cooperative control Force-position control

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A Small-Gain Method for Integrated Guidance and control in Approach and Landing Phase 35

A Small-Gain Method for Integrated Guidance and Control in A...

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第35届中国控制会议

作者： YAN Han TAN Shuping HE Yingzi Science and Technology on Space Intelligent Control Laboratory Beijing Institute of Control Engineering

ISBN: (纸本)9781509009107

The guidance and control systems of reentry vehicles are usually designed separately and then integrated, but the scheme can be argued that synergistic relationships between the two subsystems are not fully exploited. In order to improve the performance of reusable launch vehicles(RLVs), this paper proposes an integrated guidance and control(IGC) law for approach and landing of a RLV. According to the idea of reference-trajectory guidance, the angle of attack and bank angle commands are designed using sliding mode control method to make the reference-trajectory tacking error converge into a small neighborhood of zero. An IGC law is developed utilizing generalized small-gain theorem to enforce the commands, and theoretical analysis shows that the law can guarantee the stability of the overall system. The Monte Carlo simulation confirms the effectiveness of the proposed design approach.

关键词： Reusable launch vehicles Approach and landing phase Integrated guidance and control Small-gain theorem

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Spitzer space telescope: Innovations and optimizations in the extended mission era 15th

Spitzer space telescope: Innovations and optimizations in th...

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15th International Conference on space Operations, spaceOps 2018

作者： Lowrance, Patrick J. Ingalls, James G. Krick, Jessica E. Mahoney, William Glaccum, William Carey, Sean J. Scire, Elena Furlan, Elise Mei, Yi Hunt, Joseph C. Kahr, Bolinda Stowers, Kennis Bliss, David Evenson, Wayne Travis, Paul Haas, Patrick IPAC California Institute of Technology Spitzer Science Center 1200 E. California Blvd PasadenaCA91125 United States Jet Propulsion Laboratory California Institute of Technology Flight Engineering Group 4800 Oak Grove Dr. M/S 264-723 PasadenaCA91109 United States Jet Propulsion Laboratory California Institute of Technology Mission Control and Operations Engineering Group 4800 Oak Grove Dr. M/S 264-723 PasadenaCA91109 United States Lockheed Martin Space 100 Space Park Road S8700 LittletonCO80127 United States

ISBN: (数字)9781624105623

ISBN: (纸本)9781624105623

NASA’s Spitzer space Telescope continues to operate well past its original cryogenic mission concept (2003-2009), executing both a follow-on "Warm" mission (2009-2016) and the current "Beyond" (2016-present) mission phase. As Spitzer’s unique Earth-trailing orbit carries it ever further from us (now surpassing 1.6 astronomical unit), its orbital geometry provides challenges to all operational teams. Nevertheless, the combined efforts of the geographically dispersed Spitzer teams ensure that the observatory’s instrumental and observational capabilities remain either undiminished or improved, and the high overall science data collection efficiency remains nearly unchanged. In this contribution, we outline several operational changes, innovations, and optimizations that have both minimized the impact of the growing distance on data transmission and enhanced the precision of data acquired by the science instruments. Though faced with diminishing budgetary resources that reduced staffing and allowed fewer upgrades of aging equipment, extended mission operations can provide an opportunity to acquire extensive science at bargain prices. The spacecraft, ground, and mission operations systems and procedures to perform the extended mission are already in place from the prime mission. The key to maintaining successful extended operations is the proper automation, modification and process enhancement of extant prime mission capabilities and procedures to maximize science return with acceptable risk as opposed to the creation of new capabilities. Spitzer’s successful optimization of existing operational capabilities and the associated lessons learned that have gone into maximizing the lifetime well into its second decade of operation will hopefully provide guidelines for future missions, as it continues to make important contributions to the field of astrophysics, including the recent, highly significant discovery and characterization of exoplanets in the TRAPPIST-1 system. © 20

关键词： NASA

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Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array

arXiv

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arXiv 2023年

作者： Falxa, M. Babak, S. Baker, P.T. Bécsy, B. Chalumeau, A. Chen, S. Chen, Z. Cornish, N.J. Guillemot, L. Hazboun, J.S. Mingarelli, C.M.F. Parthasarathy, A. Petiteau, A. Pol, N.S. Sesana, A. Spolaor, S.B. Taylor, S.R. Theureau, G. Vallisneri, M. Vigeland, S.J. Witt, C.A. Zhu, X. Antoniadis, J. Arzoumanian, Z. Bailes, M. Bhat, N.D.R. Blecha, L. Brazier, A. Brook, P.R. Caballero, N. Cameron, A.D. Casey-Clyde, J.A. Champion, D. Charisi, M. Chatterjee, S. Cognard, I. Cordes, J.M. Crawford, F. Cromartie, H.T. Crowter, K. Dai, S. DeCesar, M.E. Demorest, P.B. Desvignes, G. Dolch, T. Drachler, B. Feng, Y. Ferrara, E.C. Fiore, W. Fonseca, E. Garver-Daniels, N. Glaser, J. Goncharov, B. Good, D.C. Griessmeier, J. Guo, Y.J. Gültekin, K. Hobbs, G. Hu, H. Islo, K. Jang, J. Jennings, R.J. Johnson, A.D. Jones, M.L. Kaczmarek, J. Kaiser, A.R. Kaplan, D.L. Keith, M. Kelley, L.Z. Kerr, M. Key, J.S. Laal, N. Lam, M.T. Lamb, W.G. Lazio, T.J.W. Liu, K. Liu, T. Luo, J. Lynch, R.S. Madison, D.R. Main, R. Manchester, R. McEwen, A. McKee, J. McLaughlin, M.A. Ng, C. Nice, D.J. Ocker, S. Olum, K.D. Oslowski, S. Pennucci, T.T. Perera, B.B.P. Perrodin, D. Porayko, N. Possenti, A. Quelquejay-Leclere, H. Ransom, S.M. Ray, P.S. Reardon, D.J. Russell, C.J. Samajdar, A. Sarkissian, J. Schult, L. Shaifullah, G. Shannon, R.M. Shapiro-Albert, B.J. Siemens, X. Simon, J.J. Siwek, M. Smith, T.L. Speri, L. Spiewak, R. Stairs, I.H. Stappers, B. Stinebring, D.R. Swiggum, J.K. Tiburzi, C. Turner, J. Vecchio, A. Verbiest, J.P.W. Wahl, H. Wang, S.Q. Wang, J. Wang, J. Wu, Z. Zhang, L. Zhang, S. Université de Paris CNRS Astroparticule et Cosmologie Paris75013 France Department of Physics and Astronomy Widener University One University Place ChesterPA19013 United States Department of Physics Montana State University BozemanMT59717 United States Dipartimento di Fisica "G. Occhialini" Universitá degli Studi di Milano-Bicocca Piazza della Scienza 3 Milano20126 Italy Kavli Institute for Astronomy and Astrophysics Peking University Beijing100871 China Department of Astronomy Beijing Normal University Beijing100875 China Station de Radioastronomie de Nançay Observatoire de Paris PSL University CNRS Université d’Orléans Nançay18330 France Laboratoire de Physique et Chimie de l’Environnement et de l’Espace LPC2E UMR7328 Université d’Orléans CNRS Orléans45071 France Department of Physics Oregon State University CorvallisOR97331 United States Center for Computational Astrophysics Flatiron Institute 162 5th Avenue New YorkNY10010 United States Department of Physics University of Connecticut 196 Auditorium Road U-3046 StorrsCT06269-3046 United States Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 Bonn53121 Germany IRFU CEA Université Paris-Saclay Gif-sur-YvetteF-91191 France Department of Physics and Astronomy Vanderbilt University 2301 Vanderbilt Place NashvilleTN37235 United States INFN Sezione di Milano-Bicocca Piazza della Scienza 3 Milano20126 Italy Department of Physics and Astronomy West Virginia University P.O. Box 6315 MorgantownWV26506 United States Laboratoire Univers et Théories LUTh Observatoire de Paris Université PSL CNRS Université de Paris Meudon92190 France Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive PasadenaCA91109 United States Center for Gravitation Cosmology and Astrophysics Department of Physics University of Wisconsin-Milwaukee P.O. Box 413 MilwaukeeWI53201 United States Northwestern University EvanstonIL60208 United States Adler Planet

The International Pulsar Timing Array 2nd data release is the combination of datasets from worldwide collaborations. In this study, we search for continuous waves: gravitational wave signals produced by individual supermassive black hole binaries in the local universe. We consider binaries on circular orbits and neglect the evolution of orbital frequency over the observational span. We find no evidence for such signals and set sky averaged 95% upper limits on their amplitude h95. The most sensitive frequency is 10nHz with ℎ95 = 9.1 × 10−15. We achieved the best upper limit to date at low and high frequencies of the PTA band thanks to improved effective cadence of observations. In our analysis, we have taken into account the recently discovered common red noise process, which has an impact at low frequencies. We also find that the peculiar noise features present in some pulsars data must be taken into account to reduce the false alarm. We show that using custom noise models is essential in searching for continuous gravitational wave signals and setting the upper limit. Copyright © 2023, The Authors. All rights reserved.

关键词： Pulsars

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Structural Performance Analysis of Wall Climbing Robot

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IOP Conference Series: Materials science and Engineering 2019年第4期569卷

作者： Li Huang Shangchun Liao College of Computer Science and Technology Wuhan University of Science and Technology Hubei Wuhan 430081 China Hubei Province Key Laboratory of Intelligent Information Processing and Real-time Industrial System Wuhan University of Science and Technology Hubei Wuhan 430081 China Key Laboratory of Metallurgical Equipment and Control Technology Ministry of Education Wuhan University of Science and Technology Hubei Wuhan 430081 China

With the development of artificial intelligence technology, robotics technology has become more and more mature. Ground walking robots not only develop rapidly, but also have been applied in actual production and life. However, the development of wall climbing robot technology is still in the laboratory research and small-scale application. We live in a world where progress is continuing. Large-scale buildings, bridges and ships are becoming more and more common. In these places, it is inevitable to involve the construction, maintenance and clarity of high-rise buildings and ships. In the case of dangerous and inefficient manpower work, the application of wall climbing robots can play a very good role. Therefore, the development of wall climbing robots is of vital importance both now and in the future. Starting from the performance characteristics of wall climbing robot, this paper studies and summarizes the moving mode, control mode, conditions to be satisfied and various adsorption forms of wall climbing robot, and introduces the basic research situation in the field of wall climbing robot.

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Tube-based Robust Fault Estimation Integrating Unknown Inputs Decoupling and Set-membership Approach

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IFAC-PapersOnLine 2017年第1期50卷 2854-2859页

作者： Tan J. Xu F. Yang J. Mi Y. Wang X. Liang B. Center of Intelligent Control and Telescience Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China Tsinghua National Laboratory for Information Science and Technology Tsinghua University Beijing 100084 China

This paper proposes a novel tube-based robust fault estimation (FE) method for dynamic systems by decoupling unknown inputs and using set-membership approach. FE problems are considered in a novel prospective in this paper. Instead of estimating a specific fault value like most of FE methods, in order to guarantee the FE robustness, we compute a fault tube to contain the real fault at each time instant under an assumption that the system uncertainties (i.e., modeling errors, process disturbances and measurement noises) are bounded. Theoretically, any trajectory in the fault tube can be used as an estimation of the real fault. The size of the tube indicates the performance of FE. That is, the smaller the tube is, the better the obtained FE results are. At the end of this paper, a numerical example is used to show the effectiveness of the proposed robust FE approach. © 2017

关键词： Decoupling of unknown inputs Fault estimation Robustness Set-membership approach

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Corrigendum to ''Bridging Fe3O4@Au nanoflowers and Au@Ag nanospheres with aptamer for ultrasensitive SERS detection of aflatoxin B1" [Food Chem. 324 (2020) 126832]

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Food chemistry 2020年 332卷 127443页

作者： Huirong He Da-Wen Sun Hongbin Pu Lunjie Huang School of Food Science and Engineering South China University of Technology Guangzhou 510641 China Academy of Contemporary Food Engineering South China University of Technology Guangzhou Higher Education Mega Centre Guangzhou 510006 China Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products Guangzhou Higher Education Mega Center Guangzhou 510006 China. Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products Guangzhou Higher Education Mega Center Guangzhou 510006 China Food Refrigeration and Computerized Food Technology (FRCFT) Agriculture and Food Science Centre University College Dublin National University of Ireland Belfield Dublin 4 Ireland. Electronic address: dawen.sun@ucd.ie.

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The 3D point clouds registration for human foot 3rd

The 3D point clouds registration for human foot

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3rd International Conference on Intelligence science, ICIS 2018

作者： Xie, Yi Shang, Xiuqin Li, Yuqing Liu, Xiwei Zhu, Fenghua Xiong, Gang Pirttikangas, Susanna Zhou, Jiehan School of Electrical and Electronic Engineering The University of Manchester ManchesterM13 9PL United Kingdom The State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing100190 China Cloud Computing Center Chinese Academy of Sciences DongguanGuangdong China College of Information Science and Technology Beijing University of Chemical Technology Beijing China Qingdao Academy of Intelligent Industries Qingdao China Beijing Engineering Research Center of Intelligent Systems and Technology Institute of Automation Chinese Academy of Sciences Beijing100190 China The Center for Ubiquitous Computing University of Oulu Oulu Finland

ISBN: (纸本)9783030013127

For personalized design it is important to be able to collect, measure and evaluate individual properties of human beings. This paper proposes registration for the point clouds during foot 3D scanning. In the experiment, we get the point clouds of the human foot from the Artec 3D scanner and complete the registration of the point clouds from different visual angles. Dealing with the customized footwear, we choose a novel algorithm, which combines the NARF key point detector and the FPFH descriptor, to improve the efficiency of the initial iteration and reduce the computation burden of matching process. © IFIP International Federation for Information Processing 2018.

关键词： Iterative methods

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Dynamic State Estimation Using Event-Trigger Master-Slave Nonlinear Filter for WAMS Applications

Dynamic State Estimation Using Event-Trigger Master-Slave No...

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Data Driven control and Learning Systems (DDCLS)

作者： Qing Yuan Fengdi Zhang Hengheng Gong Luyu Li Sen Li Xiaozhong Liao Zhen Li Xiangdong Liu School of Automation and Key Laboratory for Intelligent Control & Decision on Complex Systems Beijing Institute of Technology Beijing P. R. China National Key Laboratory of Science and Technology on Aerospace Intelligence Control Beijing P. R. China Beijing Institute of Radio Measurement Beijing P. R. China

ISBN: (纸本)9781538626191

The real-time state estimation becomes greatly important with the wide application of phasor measurement unit (PMU) in distributed generation (DG) for wide-area measurement systems (WAMS). In view of estimation, particle filter (PF) is capable of providing the best performance but at the cost of heavy computation burden. Besides, the growing grid size sustainably boosts the amount of data communication from PMU, causing the congestion. An event-trigger master-slave nonlinear filter (ET-MSNF) is proposed to guarantee the estimation accuracy and get the communication bandwidth relieved. The local slave filter at the generator node carries out the local estimation and event-trigger strategy using unscented transformation, which is identical to the center slave. The master filter at the center is designed using Monte Carlo method to improve the center's estimation accuracy by the cooperation with the center slave. Such master-slave filtering structure can fully utilize the computation capability both at the center and node. Simulation on the standard IEEE 39-bus system verify the performance of ET-MSNF.

关键词： Generators Monte Carlo methods Phasor measurement units Master-slave Wide area measurements State estimation

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