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A Typical Power Allocation for Distributed Filtering

IFAC-PapersOnLine 2017年第1期50卷 10550-10555页

作者： Zhang Y. Yang W. Yang C. Wang X. Sha F. Tian Y. Key Laboratory of Advanced Control and Optimization for Chemical Processes East China University of Science and Technology Shanghai 200237 China Department of Automation Shanghai Jiaotong University Shanghai 200240 China

In this paper, the problem of power allocation is considered for distributed estimation over a sensor network with limited power. An online power allocation scheme is introduced to optimize the power consumption, where the power distributed to each communication channel depends on the innovation value of the sender. First, an optimal estimator gain is designed for each sensor by minimizing the mean-squared estimation error covariance. Second, a sufficient condition is provided to guarantee the stability of networked system with online power allocation scheme. Finally, we compare the estimation performance of the proposed online power scheduling scheme with some typical offline power scheduling schemes. © 2017

关键词： Distributed estimation Modified algebraic Riccati equation (MARE) Power allocation Transmission probability

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Improved Garson Algorithm based on Neural Network Model 29

Improved Garson Algorithm based on Neural Network Model

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第29届中国控制与决策会议

作者： Sun Maozhun Liu Ji Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of EducationEast China University of Science and Technology School of Information Science and Engineering East China University of Science and Technology

ISBN: (纸本)9781509046584

The evaluation of input factors of complex system is a hot and difficult point in the sensitivity analysis. In this paper, the Garson algorithm based on artificial intelligence is studied and the original Garson algorithm accuracy is not high. Therefore, an improved Garson algorithm is proposed and the input factors are introduced into the Garson algorithm. At the same time, the original local sensitivity analysis algorithm is improved as the global sensitivity analysis algorithm and it increases the accuracy and stability of the Garson algorithm. Through the typical benchmark test function simulation, the experimental results show that the improved Garson algorithm has higher accuracy and stability in the evaluation of sensitivity coefficient. Finally, the improved Garson algorithm is applied to evaluate the input factors of the plate-fin heat exchangers. It shows that the IGarson algorithm is more feasibility and effectiveness.

关键词： sensitivity analysis artificial intelligence neural network local sensitivity analysis global sensitivity analysis

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Antifungal effects of BiOBr nanosheets carrying surfactant cetyltrimethylammonium bromide

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The Journal of Biomedical Research 2018年第5期32卷 380-388页

作者： Meiqing Sun Zhanlin Ding Hong Wang Guangping Yu Bingzhi Li Mingchun Li Mengmeng Zhen Key Laboratory of Systems Bioengineering (Ministry of Education) School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China Wuqing District Center for Disease Control and Prevention Tianjin 301700 China Ministry of Education Key Laboratory of Molecular Microbiology and Technology College of Life Science Nankai University Tianjin 300071 China Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy Institute for New Energy Materials & Low-Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology Tianjin 300071 China

BiOBr nanosheets are important photocatalytic nanomaterials. However, their biological effects remain to be explored. In this study, we investigated the antifungal effect of BiOBr nanosheets on Candida albicans. Strikingly,the nanosheets strongly inhibited the growth of C. albicans [IC50=（96±4.7） mg/L],hyphal development and biofilm formation. Compareed to the antifungal effect of the cationic surfactant cetyltrimethylammonium bromide, the inhibitory effect of the nanosheets on fungal pathogen was attributed to cetyltrimethylammonium bromide adsorbed by the nanosheets. Thermal gravity analysis and cetyltrimethylammonium bromide release experiment indicated that only 0.42% cetyltrimethylammonium bromide on BiOBr nanosheets was released. Taken together, this study uncovers the contribution of surfactant released from the nanosheets to their antifungal activity.

关键词： BiOBr nanosheets Candida albicans antifungal activity cationic surfactant

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Sliding Mode Estimation-based control for Stochastic Time Delays in Networked Micorgrid 36

Sliding Mode Estimation-based Control for Stochastic Time De...

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第36届中国控制会议

作者： Xuping Zhou Huaicheng Yan Chen Peng Fuwen Yang Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education East China University of Science and Technology School of Mechatronic Engineering and Automation Shanghai University School of Engineering Griffith University

ISBN: (纸本)9781538629185

This paper proposes a sliding mode estimation-based control to solve the stochastic time delay problem in networked microgrid,because stochastic delay has a great impact on the stability and performance of large power grids（LPG）.To analyze the delay effects,the microgrid system model is derived according to the characteristics of the inverter in grid-connected *** on the microgrid system model,the stochastic delay estimation with learning parameter and delayed states are *** control signal designed by sliding mode control（SMC） and the learning parameter of delay estimation are adaptively changed in the sliding mode estimation-based control *** reaching law（ERL） is proposed to solve the chattering issues of *** 3.3 KW microgrid parameters are added into simulation to verify the effectiveness and performance of the proposed control strategy.

关键词： Networked Microgrid Sliding Mode control（SMC） Stochastic Delay Estimation

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Enhanced catalytic performance of Cu-and/or Mn-loaded Fe-Sep catalysts for the oxidation of CO and ethyl acetate

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Chinese Journal of chemical Engineering 2017年第10期25卷 1427-1434页

作者： Lisha Liu Yong Song Zhidan Fu Qing Ye Shuiyuan Cheng Tianfang Kang Hongxing Dai Key Laboratory of Beijing on Regional Air Pollution Control Department of Environmental Science Beijing University of Technology Beijing 100124 China Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution Control Key Laboratory of Advanced Functional Materials Education Ministry of China Laboratory of Catalysis Chemistry and Nanoscience Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology Beijing 100124 China

The Fe-modi fied sepiolite-supported Mn–Cu mixed oxide(Cux Mny/Fe-Sep) catalysts were prepared using the co-precipitation *** materials were characterized by means of the XRD,N_2 adsorption–desorption,XPS,H_2-TPR,and O_2-TPD techniques,and their catalytic activities for CO and ethyl acetate oxidation were *** results show that catalytic activities of the Cux Mny/Fe-Sep samples were higher than those of the Cu1/Fe-Sep and Mn2/Fe-Sep samples,and the Mn/Cu molar ratio had a distinct in fluence on catalytic activity of the *** the Cux Mny/Fe-Sep and Cu1Mn2/Sep samples,Cu1Mn2/Fe-Sep performed the best for CO and ethyl acetate oxidation,showing the highest reaction rate and the lowest T50 and T90 of 4.4×10^(-6) mmol·g-1·s-1,110,and 140 °C for CO oxidation,and 1.9×10^(-6) mmol·g-1·s-1,170,and210 °C for ethyl acetate oxidation,***,the Cu1Mn2/Fe-Sep sample possessed the best lowtemperature reducibility and the lowest temperature of oxygen desorption as well as the highest surface Mn^(4+)/Mn^(3+) and Cu^(2+)/CuO atomic *** is concluded that factors,such as the strong interaction between the Cu or Mn and the Fe-Sep support,good low-temperature reducibility,and good mobility of chemisorbed oxygen species,might account for the excellent catalytic activity of Cu1Mn2/Fe-Sep.

关键词： Fe-modified sepiolite Supported Mn–Cu mixed oxide Reducibility Strong metal-support interaction CO oxidation Ethyl acetate oxidation

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Improvement of Brain - Machine Interface Model on Dynamic Reaching Task

Improvement of Brain - Machine Interface Model on Dynamic Re...

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Chinese control Conference (CCC)

作者： Jinggao Sun Rui Xue Hongguang Pan Jiaxiong Yang Shuo Wang Key Laboratory of Advanced Control and Optimization Technology of Ministry of Education East China University of Science and Technology Shanghai China School of Electrical and Control Engineering Xi'an University of Science and Technology Xi'an China

Based on the relative and required velocity integration to endpoint (RRVITE) model, we extend the neuroprosthetic model for voluntary single joint reaching task by adding the vector models related to relative speed information, which improves the model performance in dynamic reaching task. Through the synthetic simulation, we show that the extended model performs much better than the original one in motion prediction and steady state accuracy. Using synthetic data obtained through the simulation of the original model, a linear decoder based on Weiner filter has been trained and introduced into the improved model to test its performance. Both the evaluation results and the online test results show that the improved model can also enhance the performance of the BMI system with decoder.

关键词： Mathematical model Integrated circuit modeling Task analysis Decoding Brain modeling Neural activity Force

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Spray Deposition of PDMS/Candle Soot NPs Composite for Self-Cleaning Superhydrophobic Coating

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Macromolecular Symposia 2020年第1期393卷

作者： Sutar, Rajaram S. Latthe, Sanjay S. Sargar, A.M. Patil, C.E. Jadhav, V.S. Patil, A.N. Kokate, K.K. Bhosale, Appasaheb K. Sadasivuni, Kishor Kumar Mohite, Santosh V. Liu, Shanhu Xing, Ruimin Henan Key Laboratory of Polyoxometalate Chemistry Henan Joint International Research Laboratory of Environmental Pollution Control Materials College of Chemistry and Chemical Engineering Henan University Kaifeng China Self-cleaning Research Laboratory Department of Physics Raje Ramrao College Affiliated to Shivaji University Kolhapur JathMaharashtra India Department of Chemistry Bharti Vidyapeeth's Dr. Patangrao Kadam Mahavidyalaya SangliMaharashtra India Department of Physics Bharti Vidyapeeth's Dr. Patangrao Kadam Mahavidyalaya SangliMaharashtra India Department of Zoology Raje Ramrao College JathMaharashtra India Smt. A. R. Patil Kanya Mahavidyalaya Ichalkaranji KolhapurMaharashtra India School of Chemistry MIT World Peace University. Kothrud PuneMaharashtra India Center for Advanced Materials Qatar University Doha Qatar

The preparation of superhydrophobic coating using cheap candle soot nanoparticles (CS NPs) collected from candle flame is a very novel research topic. A less than 30nm sized candle soot particles are collected by passing through stainless steel mesh of pore size ̴30nm. An optimum suspension of CS NPs and polydimethylsiloxane (PDMS) in chloroform is sprayed on clean glass substrate and dried at 100C for 1 hour. The coating surface with water contact angle ̴173 and rolling angle ̴ 4 is achieved by spraying suspension of 100mg CS NPs and 0.3mL PDMS in chloroform. The stability of superhydrophobic coating is studied by finger-wiping, water jet hitting, water dripping, adhesive tape, and sandpaper abrasion test. Result showed that the coatings prepared with an optimum 100mg CS NPs in suspension are stable under water jet hitting and water dripping test. The superhydrophobicity is destroyed for four cycles of adhesive tape peeling and seven cycles of sandpaper abrasion tests. The coated substrate showed good self-cleaning performance. The high water repellent and self-cleaning property of the prepared coating can be adopted for industrial applications. © 2020 Wiley-VCH GmbH

关键词： Polydimethylsiloxane

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Variable population memetic search: A case study on the critical node problem

arXiv

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arXiv 2019年

作者： Zhou, Yangming Hao, Jin-Kao Fu, Zhang-Hua Wang, Zhe Lai, Xiangjing School of Information Science and Engineering East China University of Science and Technology 130 Meilong Road Shanghai200237 China Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education Department of Computer Science LERIA Université d'Angers 2 Boulevard Lavoisier Angers49045 France Institut Universitaire de France 1 rue Descartes Paris75231 France Robotics Laboratory for Logistics Service Institute of Robotics and Intelligent Manufacturing Chinese University of Hong Kong Shenzhen Institute of Artificial Intelligence and Robotics for Society Shenzhen518172 China Institute of Advanced Technology Nanjing University of Posts and Telecommunications Nanjing210023 China

Population-based memetic algorithms have been successfully applied to solve many difficult combinatorial problems. Often, a population of fixed size was used in such algorithms to record some best solutions sampled during the search. However, given the particular features of the problem instance under consideration, a population of variable size would be more suitable to ensure the best search performance possible. In this work, we propose variable population memetic search (VPMS), where a strategic population sizing mechanism is used to dynamically adjust the population size during the memetic search process. Our VPMS approach starts its search from a small population of only two solutions to focus on exploitation, and then adapts the population size according to the search status to continuously influence the balancing between exploitation and exploration. We illustrate an application of the VPMS approach to solve the challenging critical node problem (CNP). We show that the VPMS algorithm integrating a variable population, an effective local optimization procedure (called diversified late acceptance search) and a backbone-based crossover operator performs very well compared to state-of-the-art CNP algorithms. The algorithm is able to discover new upper bounds for 13 instances out of the 42 popular benchmark instances, while matching 23 previous best-known upper bounds. Copyright © 2019, The Authors. All rights reserved.

关键词： Population statistics

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Stability and dynamic behaviors of gas-phase ethylene polymerization process under condensed mode operation

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Huagong Xuebao/CIESC Journal 2018年第2期69卷 779-781页

作者： Fan, Xiaoqiang Han, Guodong Huang, Zhengliang Sun, Jingyuan Wang, Jingdai Yang, Yongrong Wu, Wenqing Xie, Lei State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering Zhejiang University HangzhouZhejiang310027 China SINOPEC Tianjin Company Tianjin300271 China Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology HangzhouZhejiang310027 China College of Control Science and Engineering Zhejiang University HangzhouZhejiang310027 China

Due to significant enhancement in heat removal capacity of recirculating gas and space-time yield of fluidized bed reactors, condensed mode operation has become most popular in gas-phase ethylene polymerization. A mathematical model for condensing mode operation of gas phase ethylene polymerization process was established, which included fluidized-bed reactor model, stage heat exchanger model, and control model of reactor temperature, pressure, and component partial pressure of recirculating gas. Process simulation was applied to obtain steady state solution when reactor temperature was controlled by close-loop, and dynamic behavior of the system under small perturbation was used to qualitatively analyze stability of ethylene polymerization when reactor temperature was controlled by open-loop and close-loop. Finally, stepwise response characteristics of ethylene polymerization close-loop system was studied under consideration of 1-hexene partial pressure and catalyst feed rate. Simulation results show that the steady state solutions are stable within the scope of studied conditions when reactor temperature is close-loop controlled, whereas the steady state solutions are divided into stable and unstable zone by bifurcation points when reactor temperature is open-loop controlled. The long and short period oscillations observed in stepwise response of reactor temperature to 1-hexene partial pressure reveal that ethylene polymerization system under condensed mode operation is a complex process with multiple coupling control loops. © All Right Reserved.

关键词： Fluidized beds

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OilWater Separation by ZnO-Based Superhydrophobic PU Sponges

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Macromolecular Symposia 2020年第1期393卷

作者： Sutar, Rajaram S. Mane, Manisha S. Latthe, Sanjay S. Pawar, P.G. Kumbhar, Sarita S. Nerle, Uma V. Mote, U.E. Bhosale, J.L. Kokare, B.N. Sadasivuni, Kishor Kumar Liu, Shanhu Xing, Ruimin JathMaharashtra416404 India Henan Key Laboratory of Polyoxometalate Chemistry Henan Joint International Research Laboratory of Environmental Pollution Control Materials College of Chemistry and Chemical Engineering Henan University Kaifeng475004 China Shivaji Polytechnic College SangolaMaharashtra413307 India Department of Physics Rajashri Chatrapati Shahu College KolhapurMaharashtra India KLES P C Jabin Science Autonomous College HubballiKarnataka India Department of Physics Shrimant Babasaheb Deshmukh Mahavidyalaya AtpadiMaharashtra India Department of Physics ShikshanMaharshi Bapuji Salunkhe Mahavidyalaya MirajMaharashtra India Department of Chemistry Smt. Meenalben Mehta College PanchganiMaharashtra India Center for Advanced Materials Qatar University Doha2713 Qatar

Continuous oilwater separation is not only an important topic for scientific research but also for practical applications to clean oil from industrial oily wastewater and oil-spill pollution. In this work, polyurethane sponges are coated by ZnO using dip coating technique. ZnO-coated sponges are modified by stearic acid to achieve superhydrophobicity. The ZnO-coated sponges exhibit water contact angle ≈165 and oil contact angle ≈0. The prepared superhydrophobic sponge is sustained in oilwater separation and in separation of oilhot water mixture. Also the wetting properties of the sponge are stable in mechanical test like cutting and twisting. Stearic acid modified ZnO-coated sponge holds good promise for oil-spill cleanup as well as oil/water separation from harsh environments. © 2020 Wiley-VCH GmbH

关键词： Contact angle

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