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Reliable H Filtering for Mixed Time-Delay Systems with Stochastic Nonlinearities and Multiplicative Noises

ASIAN JOURNAL OF control 2013年第2期15卷 583-593页

作者： Wen, S. P. Zeng, Z. G. Huang, T. W. Huazhong Univ Sci & Technol Dept Control Sci & Engn Wuhan 430074 Peoples R China Educ Minist China Key Lab Image Proc & Intelligent Control Wuhan 430074 Peoples R China Texas A&M Univ Qatar Doha 5825 Qatar

This paper investigates the reliable H filtering problem for a class of mixed time-delay systems with stochastic nonlinearities and multiplicative noises. The mixed delays comprise both discrete time-varying and distributed delays. The stochastic nonlinearities in the form of statistical means cover several well-studied nonlinear functions. The multiplicative disturbances are in the form of a scalar Gaussian white noise with unit variance. Furthermore, the failures of sensors are quantified by a variable varying in a given interval. In the presence of mixed delays, stochastic nonlinearities, and multiplicative noises, sufficient conditions for the existence of a reliable H filter are derived, such that the filtering error dynamics is asymptotically mean-square stable and also achieves a guaranteed H performance level. Then, a linear matrix inequality (LMI) approach for designing such a reliable H filter is presented. Finally, a numerical example is provided to illustrate the effectiveness of the developed theoretical results.

关键词： H filtering reliable filtering stochastic nonlinearity multiplicative noise

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Multiple models based detection of transient faults for networked control system

Multiple models based detection of transient faults for netw...

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International Conference on Mechatronics, Robotics and Automation (ICMRA 2013)

作者： Yang, Mingyue Huang, Xiongfeng Huang, Shuang Zhou, Chunjie Huazhong Univ Sci & Technol Key Lab Coll Automat Minist Educ Image Proc & Intelligent Control Wuhan 430074 Hubei Peoples R China

ISBN: (纸本)9783037858066

Transient faults are the dominated kind of threats to operation safety in networked control systems (NCSs), and the runtime detection of them is difficult but a key point in fault tolerance design. In this paper, a novel transient fault detection approach is proposed based on multiple system models. System models are established to show how system works in teleological, functional, behavioral, and structural viewpoints, and operational constraints of the models are set up to capture the runtime violation in which the faults are indicated. A case is presented to investigate the using processes of the proposal and the results show that the transient faults are detected efficiently online.

关键词： Fault detection multiple models networked control system transient fault

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Universality of sequential spiking neural P systems based on minimum spike number

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THEORETICAL COMPUTER SCIENCE 2013年 499卷 88-97页

作者： Jiang, Keqin Song, Tao Pan, Linqiang Huazhong Univ Sci & Technol Sch Automat Key Lab Image Proc & Intelligent Control Wuhan 430074 Hubei Peoples R China Anqing Normal Univ Sch Comp & Informat Anqing 246133 Anhui Peoples R China

Spiking neural P systems (SN P systems, for short) are a class of distributed parallel computing devices inspired from the way neurons communicate by means of spikes. Each neuron can have several spiking rules and forgetting rules and neurons work in parallel in the sense that each neuron that can fire should fire at each computation step. In this work, we consider SN P systems working in the sequential way, where the sequentiality is induced by the minimum number of spikes: at each step, one (resp. all) of the neurons with the minimum number of spikes among the neurons that are active (can fire) will fire, called min-sequentiality (resp. min-pseudo-sequentiality). We prove that SN P systems working in min-sequentiality or min-pseudo-sequentiality are universal as both number generating and accepting devices, where the computation results are encoded by the time elapsed between the first two spikes of the output neuron. The results give positive answers to two open problems formulated in [O.H. lbarra, A. Nun, A. Rodriguez-Paton, Sequential SNP systems based on min/max spike number, Theoretical Computer Science 410 (30-32) (2009) 2982-2991]. (C) 2013 Elsevier B.V. All rights reserved.

关键词： Membrane computing Spiking neural P system Sequentiality Universality Spike number

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Compound synchronization of four memristor chaotic oscillator systems and secure communication

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CHAOS 2013年第1期23卷 013140页

作者： Sun, Junwei Shen, Yi Yin, Quan Xu, Chengjie Huazhong Univ Sci & Technol Dept Control Sci & Engn Wuhan 430074 Hubei Peoples R China Huazhong Univ Sci & Technol Minist Educ Image Proc & Intelligent Control Key Lab Wuhan 430074 Hubei Peoples R China

In this paper, a novel kind of compound synchronization among four chaotic systems is investigated, where the drive systems have been conceptually divided into two categories: scaling drive systems and base drive systems. Firstly, a sufficient condition is obtained to ensure compound synchronization among four memristor chaotic oscillator systems based on the adaptive technique. Secondly, a secure communication scheme via adaptive compound synchronization of four memristor chaotic oscillator systems is presented. The corresponding theoretical proofs and numerical simulations are given to demonstrate the validity and feasibility of the proposed control technique. The unpredictability of scaling drive systems can additionally enhance the security of communication. The transmitted signals can be split into several parts loaded in the drive systems to improve the reliability of communication. (C) 2013 American Institute of Physics. [http://***/10.1063/1.4794794]

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Adaptive second-order consensus of multi-agent systems with heterogeneous nonlinear dynamics and time-varying delays

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NEUROCOMPUTING 2013年 118卷 289-300页

作者： Liu, Bo Wang, Xiaoling Su, Housheng Gao, Yanping Wang, Li North China Univ Technol Coll Sci Beijing 100144 Peoples R China Huazhong Univ Sci & Technol Educ Minist China Key Lab Image Proc & Intelligent Control Dept Control Sci & Engn Wuhan 430074 Peoples R China Beijing Technol & Business Univ Coll Comp & Informat Engn Beijing 100048 Peoples R China North China Univ Technol Beijing Key Lab Urban Intelligent Traff Control T Beijing 100144 Peoples R China

This paper investigates second-order consensus of multi-agent systems with heterogeneous nonlinear dynamics and time-varying delays by introducing novel decentralized adaptive strategies to both the coupling strengths and the feedback gains. Based on the Lyapunov stability theory, it is proved that the position and the velocity of each agent can converge to those of the virtual leader respectively, when the network is connected and at least one agent is informed, without any global information of the multi-agent system. Finally, some numerical simulations are presented to verify the theoretical results. (C) 2013 Elsevier B.V. All rights reserved.

关键词： Adaptive control Second-order consensus Pinning control Time-varying delays Virtual leader

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Analysis of Joint Connectivity Condition for Multiagents With Boundary Constraints

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IEEE TRANSACTIONS ON CYBERNETICS 2013年第2期43卷 437-444页

作者： Chen, Zhiyong Zhang, Hai-Tao Univ Newcastle Australia Sch Elect Engn & Comp Sci Callaghan NSW 2308 Australia Huazhong Univ Sci & Technol Key Lab Image Proc & Intelligent Control Dept Control Sci & Engn Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol State Key Lab Digital Mfg Equipment & Technol Wuhan 430074 Peoples R China

The connectivity of a group of agents in a flocking scenario is caused either by individual's local cohesion interaction mechanism or by external boundary constraints. The latter case is particularly interesting when an individual's cohesion ability is not reliable due to the limitation of communication range. The effect of external boundary constraints on the connectivity property of multiagents has been intensively investigated in natural observation and engineering simulation. A theoretical analysis is given in this paper which reveals that a group of agents in a bounded plane can be almost always jointly connected and hence form a complete flock.

关键词： Biological systems collective motion flock multiagent systems (MASs)

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Handling multi-objective in an HTN planner for emergency decision-making

Handling multi-objective in an HTN planner for emergency dec...

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2013 IEEE Conference Anthology, ANTHOLOGY 2013

作者： Li, Minglei Wang, Hongwei Qi, Chao Liu, Dan Wang, Jian Wang, Zhe Systems Engineering Institute Huazhong University of Science and Technology Wuhan China Key Laboratory of Image Processing and Intelligent Control of Education Ministry Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781479916603

There are many multi-objective planning problems in emergency decision-making domain. HTN planners were widely used in emergency decision-making, while they have limited ability to solve optimization, especially multi-objective optimization. Aimed to handling multi-objective in HTN planners, this paper proposes a novel method based on SHOP2, which is a domain-independent state-based forward HTN planner. The method uses a weighted vector to mirror the decision maker's performance for various objectives and an anytime search algorithm to improve the ability to find the best solution plan. Finally, a case of emergency evacuation is given to testify the effectiveness of the method. © 2013 IEEE.

关键词： Multiobjective optimization

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A remark on collective circular motion of heterogeneous multi-agents

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AUTOMATICA 2013年第5期49卷 1236-1241页

作者： Chen, Zhiyong Zhang, Hai-Tao Univ Newcastle Sch Elect Engn & Comp Sci Callaghan NSW 2308 Australia Huazhong Univ Sci & Technol Key Lab Image Proc & Intelligent Control Dept Control Sci & Engn State Key Lab Digital Mfg Equipments & Technol Wuhan 430074 Peoples R China

The study on collective circular motion has attracted researchers over the past years. Many control algorithms have been successfully developed for achieving various circular motion patterns. However, the existing algorithms rely on more or less global information including a reference beacon, a common reference frame, agent labels, or agent homogeneity. In this paper, an improved algorithm is proposed for a group of heterogeneous agents, not relying on any of the aforementioned global information. The algorithm is supported by analytical analysis and verified in both simulation and experiments. (C) 2013 Elsevier Ltd. All rights reserved.

关键词： Co-operative control Multi-agents Circular motion Nonholonomic vehicles Heterogeneous multi-agents

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Changes in spectrum mapping in rhythmic movement involved in walking after spinal cord injury

Changes in spectrum mapping in rhythmic movement involved in...

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2013 IEEE International Conference on Medical Imaging Physics and Engineering

作者： Li Wei Yan Zhiqiao Huang Yue Xu Jiang Image Processing and Intelligent Control Key Laboratory of Education Ministry of China School of Automation Huazhong University of Science and Technology Rehabilitation Department Tongji HospitalWuhan

ISBN: (纸本)9781467358873

Spectrum mapping reflects the strength of brain electrical activity in different frequency *** current study analyzes changes in electroencephalography(EEG) after spinal cord injury(SCI) on the basis of spectrum *** spectrum mappings of SCI patients and normal subjects,the fact that beta rhythm dominated in brain electrical activity during walking period was *** addition,the proportion of delta wave increased and slightly exceeded that of beta wave after spinal cord injury and power values in delta band of SCI patients performed greater than that of normal subjects.

关键词： Spectrum mapping,Spinal cord injury,Frequency band

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Asynchronous spiking neural P systems with local synchronization

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INFORMATION SCIENCES 2013年 219卷 197-207页

作者： Song, Tao Pan, Linqiang Paun, Gheorghe Huazhong Univ Sci & Technol Dept Control Sci & Engn Key Lab Image Proc & Intelligent Control Wuhan 430074 Hubei Peoples R China Univ Seville Dept Comp Sci & Artificial Intelligence E-41012 Seville Spain Romanian Acad Inst Math Bucharest 014700 Romania

Spiking neural P systems (SN P systems, for short) are a class of distributed parallel computing devices inspired from the way neurons communicate by means of spikes. Asynchronous SN P systems are non-synchronized systems, where the use of spiking rules (even if they are enabled by the contents of neurons) is not obligatory. It remains open whether asynchronous SN P systems with standard spiking rules are equivalent with Turing machines. In this paper, with a biological inspiration (in order to achieve some specific biological functioning, neurons from the same functioning motif or community work synchronously to cooperate with each other), we introduce the notion of local synchronization into asynchronous SN P systems. The computation power of asynchronous SN P systems with local synchronization is investigated. Such systems consisting of general neurons (respectively, unbounded neurons) and using standard spiking rules are proved to be universal. Asynchronous SN P systems with local synchronization consisting of bounded neurons and using standard spiking rules characterize the semilinear sets of natural numbers. These results show that the local synchronization is useful, it provides some "programming capacity" useful for achieving a desired computation power. el (C) 2012 Elsevier Inc. All rights reserved.

关键词： Bio-inspired computing Spiking neural P system Turing completeness Asynchronization Local synchronization

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