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Optimal Estimation in Wireless Sensor Networks with Double Measurements and Multiplicative Noise

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Optimal Estimation in Wireless Sensor Networks with Double M...

第二十九届中国控制会议

作者： lu xiao1,2,zhang huanshui11.school of control science and engineering,shandong university,jinan 250061,p.r.china2.college of information and electrical engineering,shandong university of science and technology,qingdao 266510,p.r.china

The optimal estimation for wireless sensor network systems is studied,where the measurements are observed from two different wireless channels,and the system is corrupted by multiplicative *** the system model,the probability of each packet-drop of measurements is *** optimal estimator is derived by probability method and Kalman filtering formulae based on projection theorem,the proposed optimal estimator is different from previous works,and some properties of the estimation error covariance are proposed,which will be useful to analyze the statistical convergence properties and the upper and lower bounds on the expected state error covariance in future.

关键词： Optimal estimation Double measurements Wireless sensor network Multiplicative noise

Windows and Fieldbus Based Software Computer Numerical control System

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武汉理工大学学报 2006年第S3期28卷 1148-1152页

作者： WU Hongen~(1,2) zhang Chengrui~1 LI Guili~2 WANG Baoren~(1,2) (1.Mechanical school,shandong university,jinan 250061,china, 2.college of Mechanical and Electronic engineering,shandong university of Sci & Tech,qingdao 266510,china) Mechanical school Shandong UniversityJinan 250061China college of Mechanical and Electronic engineering Shandong University of Sci & TechQingdao 266510China Mechanical school Shandong UniversityJinan 250061China college of Mechanical and Electronic engineering Shandong University of Sci & TechQingdao 266510China

Computer numerical control(CNC)system is the base of modern digital and intelligent manufacturing technolo- *** opened its architecture and constituted based on pC and Windows operating system(OS)is the main trend of CNC sys- ***,even if the highest system priority is used in user mode,real-time capability of Windows(2000,NT,Xp)for applications is not *** using a device driver,which is running in kernel mode,the real time performance of Windows can be enhanced *** acknowledgment performance of Windows to peripheral interrupts was *** with an intelligent real-time serial communication bus(rTSB),strict real-time performance can be achieved in Windows platform. An opened architecture software CNC system which is hardware independence is proposed based on pC and rTSB.A numerical control real time kernel(NCrTK),which is implemented as a device driver on Windows,is used to perform the NC *** are divided into real-time and non ***-time task is running in kernel mode and non real-time task is running in user *** are exchanged between kernel and user mode by DMA and Windows Messages.

关键词： software CNC Windows operating system real-time kernel real-time serial communication bus

维普期刊数据库

Multiary turbo code fitting for unitary space-time modulation and its MAp decoding algorithm

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science china(information sciences) 2010年第12期53卷 2610-2619页

作者： zhang Dapeng 1,2,3,lu Ju 1,XU HongJi 1 & zhang XingYu 1 1 school of information science and engineering,shandong university,jinan 250100,china 2 State Key Laboratory of Integrated Services Networks,Xidian university,Xi'an 710077,china 3 Department of Avionics engineering,First Aeronautical college of the Air Force,Xinyang 464000,china school of information science and engineering Shandong University Jinan China State Key Laboratory of Integrated Services Networks Xidian University Xi’an China Department of Avionics engineering First Aeronautical College of the Air Force Xinyang China

Unitary space-time modulation(USTM) fits for rapid rayleigh flat fading channels as it can realize wireless communication when neither the transmitter nor the receiver knows the channel state information(CSI).However,an intrinsic problem is that only when the signal-to-noise ratio(SNr) is high can it give an ideal bit error rate(BEr) *** existing bit-wise processing scheme of the combination of turbo code and USTM improves the BEr performance and results in an unacceptable calculation complexity,storage and time delay *** this paper,we propose a multiary processing scheme and its corresponding multiary MAp decoding *** results verify that our scheme can reduce the system complexity while keep a good BEr ***,we present the first analysis of the reason for the BEr performance deterioration of the combination scheme at low SNr with the help of the definition of USTM.

关键词： multiple-input multiple-output unitary space-time modulation turbo code MAp decoding diversity

Exact Observability of Stochastic Time-varying Systems

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Exact Observability of Stochastic Time-varying Systems

第二十九届中国控制会议

作者： zhang Weihai1,TIAN peng2,HOU Ting11.college of information and electrical engineering,shandong university of science and technology,qingdao 266510,p.r.china 2.college of information science and engineering,shandong university of science and technology,qingdao 266510,p.r.china

This note concentrates on developing two new criteria called "Gramian matrix Criterion" and "rank Criterio" for testing the exact observability of stochastic time-varying *** example is supplied to show the effectiven... 详细信息

关键词： Exact Observability Gramian Matrix Criterion rank Criterion Stochastic Time-varying System

State Feedback Stabilization of Nonlinear Stochastic Systems

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State Feedback Stabilization of Nonlinear Stochastic Systems

第二十六届中国控制会议

作者： zhang Weihai1,2,Yan Zhiguo 1 1.school of Electronic information and control engineering,shandong Institute of Light Industry,jinan 250353,p.r.china2.college of information and electrical engineering,shandong university of science and technology,qingdao 266510,p.r.china

This paper studies the feedback stabilization of nonlinear affine stochastic systems,for which,sufficient conditions for the locally and globally asymptotic stabilization in probability are presented by means of Hamilton-Jacobi inequalities （HJIs）.As corollaries,some previous results are *** example is given to show the validity of the developed theory.

关键词： Asymptotic stability in probability Hamilton-Jacobi inequality Feedback stabilization

robust Kalman Filtering for Wireless Sensor Networks Systems With Measurement Delay

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Robust Kalman Filtering for Wireless Sensor Networks Systems...

第三十届中国控制会议

作者： lu xiao~(1,2),zhang Juanjuan~2 1.school of control science and engineering,shandong university,jinan 250061,p.r.china. 2.Key Laboratory for robot & Intelligent technology of shandong province,shandong university of science and technology,qingdao 266510,p.r.china.

＜正＞This brief is concerned with robust Kalman filtering for wireless sensor networks with delayed measurements,where packet-drop also *** norm-bounded parameter uncertainties enter into both the system matrix and the input matrix of the state space *** approach of re-organization of measurements is proposed to improve the efficiency of computation. A sufficient and necessary condition for the existence of a robust Kalman filter for wireless sensor networks system is derived.

关键词： Wireless sensor networks robust Kalman filters packet-drop Delay

Finite-time control of Discrete-time Stochastic Systems

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Finite-time Control of Discrete-time Stochastic Systems

第二十九届中国控制会议

作者： zhang Weihai1,WANG Yi2,SUN Huiying1,LI Meng1 1.college of information and electrical engineering,shandong university of science and technology,qingdao 266510,p.r.china2.college of information science and engineering,shandong university of science and technology,qingdao 266510,p.r.china

This paper is concerned with the finite-time control problems of discrete-time stochastic ***,we provide the sufficient conditions for the system to be finite-time stochastically robustly stabilizable via a state feedback,which can be applied to problems with both non-zero initial conditions and unknown exogenous *** we give the sufficient conditions for the system to be finite-time stochastically stabilizable via an output *** conditions are eventually reduced to feasibility problems of linear matrix ***,some examples are presented to illustrate the proposed methodology.

关键词： Discrete-time Stochastic Systems Finite-time Stabilization State Feedback Output Feedback Linear Matrix In-equality

Dynamic steric confinement effect expands the frontier of Cu-catalyzed asymmetric propargylic aminations

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science china Chemistry 2024年第10期67卷 3181-3183页

作者： peng Chen Mao-Mao zhang Wen-Jing xiao Liang-Qiu lu engineering research Center of photoenergy Utilization for pollution control and Carbon reduction Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079China Wuhan Institute of photochemistry and technology Wuhan 430082China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics(LICP)Chinese Academy of SciencesLanzhou 730000China school of Chemistry and Chemical engineering Henan Normal UniversityXinxiang 453007China

Chiralα-tertiary amines and related azacycles are commonly found in many natural products,pharmaceuticals and agrochemicals[1].Copper-catalyzed asymmetric propargylic amination(ApA)reactions have been established as a reliable method to access enantio-enriched propargylic amines,largely due to the seminal contribution of Nishibayashi et al.[2]and van Maarseveen et al.[3]in 2008.

关键词： catalyzed asymmetric amines

维普期刊数据库

Exact controllability of rational expectations model with multiplicative noise and input delay

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Journal of Automation and Intelligence 2024年第1期3卷 19-25页

作者： Wenjing Wang Juanjuan Xu huanshui zhang Minyue Fu school of control science and engineering Shandong UniversityJinan 250061China college of electrical engineering and Automation Shandong University of Science and TechnologyQingdao 266590China school of System Design and Intelligent Manufacturing Southern University of Science and TechnologyShenzhen 518055China

This paper considers the rational expectations model with multiplicative noise and input delay,where the system dynamics rely on the conditional expectations of future *** main contribution is to obtain a sufficient condition for the exact controllability of the rational expectations *** particular,we derive a sufficient Gramian matrix condition and a rank condition for the delay-free *** key is the solvability of the backward stochastic difference equations with input delay which is derived from the forward and backward stochastic system.

关键词： rational expectations model Exact controllability Exactly null controllability Multiplicative noise Input delay