段志生
研究兴趣包括鲁棒控制、大系统稳定性、关联系统协调控制、非线性系统频域方法、冗余输入控制、复杂动态网络分析与控制、航空航天控制等
个性化签名
- 姓名:段志生
- 目前身份:
- 担任导师情况:
- 学位:
-
学术头衔:
博士生导师
- 职称:-
-
学科领域:
毛皮与制革工程
- 研究兴趣:研究兴趣包括鲁棒控制、大系统稳定性、关联系统协调控制、非线性系统频域方法、冗余输入控制、复杂动态网络分析与控制、航空航天控制等
段志生,教授,博士生导师。2000年7月于北京大学获一般力学专业博士学位,2002年7月于北京大学博士后出站并留校任教, 2003起任副教授, 2006年起任博士生导师,2008年8月起任教授。分别于2004-2005年,2007年6-8月、2008年7-8月访问澳大利亚Monash大学与香港城市大学进行合作研究。近年来一直从事控制理论及其应用方面的研究工作,发表SCI检索论文60余篇。在控制器与对象同时摄动的鲁棒控制问题, 关联系统协调控制,多冗余输入协调控制以及复杂网络方面作出了有特色的研究工作,研究成果被国内外同行广泛引用。主持和参加多项国家自然科学基金, 2001年获第七届关肇直控制理论奖, 现任控制理论专业委员会委员,复杂网络专业委员会委员,复杂性专业委员会委员, 国际期刊IEEE Transactions on Circuits and Systems-I Regular Papers,Dynamics of Continuous, Discrete, and Impulsive Systems-Series B Associate Editor,国内期刊控制理论与应用编委。当前主要研究兴趣包括鲁棒控制、大系统稳定性、关联系统协调控制、非线性系统频域方法、冗余输入控制、复杂动态网络分析与控制、航空航天控制等。
-
主页访问
1223
-
关注数
0
-
成果阅读
1045
-
成果数
20
段志生, Qingyun Wang, ⋆, † Matjǎz Perc, ‡ Zhisheng Duan, ⋆ and Guanrong Chen⋆, §
,-0001,():
-1年11月30日
We investigate front propagation and synchronization transitions in dependence on the information transmission delay and coupling strength over scale-free neuronal networks with different average degrees and scaling exponents. As the underlying model of neuronal dynamics, we use the efficient Rulkov map with additive noise. We show that increasing the coupling strength enhances synchronization monotonously, whereas delay plays a more subtle role. In particular, we found that depending on the inherent oscillation frequency of individual neurons, regions of irregular and regular propagating excitatory fronts appear intermittently as the delay increases. These delay-induced synchronization transitions manifest as well-expressed minima in the measure for spatial synchrony, appearing at every multiple of the oscillation frequency. Larger coupling strengths or average degrees can broaden the region of regular propagating fronts by a given information transmission delay and further improve synchronization. These results are robust against variations in system size, intensity of additive noise and the scaling exponent of the underlying scale-free topology. We argue that fine-tuned information transmission delays are vital for assuring optimally synchronized excitatory fronts on complex neuronal networks, and indeed, they should be seen as important as the coupling strength or the overall density of interneuronal connections. We finally discuss some biological implications of the presented results.
neuronal dynamics,, information transmission delay,, synchronization,, scale-free network
-
40浏览
-
0点赞
-
0收藏
-
0分享
-
91下载
-
0评论
-
引用
【期刊论文】Global asymptotic stability of a nonlinear time-delayed system of T cells in the thymus
段志生, Hongjing Shia, Wanbiao Mab, *, Zhisheng Duana
Nonlinear Analysis 71(2009)2699-2707,-0001,():
-1年11月30日
In this paper, the global asymptotic stability of the equilibrium of a nonlinear time-delayed system of T cells is studied, taking into account the differentiation and death of the T cells in the thymus. Based on quasi-steady-state approximation, local asymptotic stability of the equilibrium has been studied before. This paper gives a sufficient condition for the global asymptotic stability of the equilibrium of the model.
T cell Time delay Lyapunov functional Global asymptotic stability
-
50浏览
-
0点赞
-
0收藏
-
0分享
-
78下载
-
0评论
-
引用
【期刊论文】Synchronization Stability in Weighted Complex Networks with Coupling Delays
段志生, WANG Qing-Yun, , † DUAN Zhi-Sheng, CHEN Guan-Rong, and LU Qi-Shao
Commun. Theor. Phys.(Beijing, China)51(2009)pp. 684-690,-0001,():
-1年11月30日
Realistic networks display not only a complex topological structure, but also a heterogeneous distribution of weights in connection strengths. In addition, the information spreading through a complex network is often associated with time delays due to the finite speed of signal transmission over a distance. Hence, the weighted complex network with coupling delays have meaningful implications in real world, and resultantly gains increasing attention in various fields of science and engineering. Based on the theory of asymptotic stability of linear time-delay systems, synchronization stability of the weighted complex dynamical network with coupling delays is investigated, and simple criteria are obtained for both delay-independent and delay-dependent stabilities of synchronization states. The obtained criteria in this paper encompass the established results in the literature as special cases. Some examples are given to illustrate the theoretical results.
weighted complex networks,, coupling delays,, synchronization stability
-
36浏览
-
0点赞
-
0收藏
-
0分享
-
92下载
-
0评论
-
引用
【期刊论文】Delay-induced multiple stochastic resonances on scale-free neuronal networks
段志生, Qingyun Wang, ⋆, † Matjaˇz Perc, ‡ Zhisheng Duan, ⋆ and Guanrong Chen⋆, §
,-0001,():
-1年11月30日
We study the effects of periodic subthreshold pacemaker activity and time-delayed coupling on stochastic resonance over scale-free neuronal networks. As the two extreme options, we introduce the pacemaker respectively to the neuron with the highest degree and to one of the neurons with the lowest degree within the network, but we also consider the case when all neurons are exposed to the periodic forcing. In the absence of delay, we show that an intermediate intensity of noise is able to optimally assist the pacemaker in imposing its rhythm on the whole ensemble, irrespective to its placing, thus providing evidences for stochastic resonance on the scale-free neuronal networks. Interestingly thereby, if the forcing in form of a periodic pulse train is introduced to all neurons forming the network, the stochastic resonance decreases as compared to the case when only a single neuron is paced. Moreover, we show that finite delays in coupling can significantly affect the stochastic resonance on scale-free neuronal networks. In particular, appropriately tuned delays can induce multiple stochastic resonances independently of the placing of the pacemaker, but they can also altogether destroy stochastic resonance. Delay-induced multiple stochastic resonances manifest as well-expressed maxima of the correlation measure, appearing at every multiple of the pacemaker period. We argue that fine-tuned delays and locally active pacemakers are vital for assuring optimal conditions for stochastic resonance on complex neuronal networks.
-
52浏览
-
0点赞
-
0收藏
-
0分享
-
97下载
-
0评论
-
引用
段志生, Zhisheng Duan *, Jinzhi Wang, Ying Yang, Lin Huang
Chaos, Solitons and Fractals 40(2009)848-861,-0001,():
-1年11月30日
This paper surveys frequency-domain and time-domain methods for feedback nonlinear systems and their possible applications to chaos control, coupled systems and complex dynamical networks. The absolute stability of Lur’e systems with single equilibrium and global properties of a class of pendulum-like systems with multi-equilibria are discussed. Time-domain and frequency-domain criteria for the convergence of solutions are presented. Some latest results on analysis and control of nonlinear systems with multiple equilibria and applications to chaos control are reviewed. Finally, new chaotic oscillating phenomena are shown in a pendulum-like system and a new nonlinear system with an attraction/repulsion function.
-
265浏览
-
0点赞
-
0收藏
-
0分享
-
118下载
-
0评论
-
引用
【期刊论文】Estimating Uncertain Delayed Genetic Regulatory Networks: An Adaptive Filtering Approach
段志生, Wenwu Yu, Student Member, IEEE, Jinhu Lü, Senior Member, Guanrong Chen, Fellow, Zhisheng Duan, and Qianhe Zhou
IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL.54, NO.4, APRIL 2009,-0001,():
-1年11月30日
Uncertain delayed genetic regulatory networks are investigated from an adaptive filtering approach based on an adaptive synchronization setting. For an unknown regulatory network with time delay and uncertain noise disturbance, several adaptive laws are derived to ensure the stochastic stability of the error states between the unknown network and the estimated model. The novelty lies in the fact that the designed adaptive laws are independent of the unknown system states and parameters, requiring only the output and structure of the underlying network. A representative simulation example is given to verify the effectiveness of the theoretical results.
Adaptive filtering,, disturbance attenuation,, genetic regulatory network (, GRN), ,, stochastic stability,, system synchronization,, time delay.,
-
24浏览
-
0点赞
-
0收藏
-
0分享
-
66下载
-
0评论
-
引用
【期刊论文】Disconnected synchronized regions of complex dynamical networks ∗
段志生, Zhisheng Duan, Guanrong Chen and Lin Huang
,-0001,():
-1年11月30日
This paper addresses the synchronized region problem, which is reduced to a matrix stability problem, for complex dynamical networks. For any natural number n, the existence of a network which has n disconnected synchronized regions is theoretically demonstrated. This shows the complexity in network synchronization. Convexity characteristic of stability for matrix pencils is further discussed. Smooth and generalized smooth Chua’s circuit networks are finally discussed as examples for illustration.
Matrix pencil,, Network synchronization,, Synchronized region,, Stability,, Linear matrix inequality.,
-
36浏览
-
0点赞
-
0收藏
-
0分享
-
44下载
-
0评论
-
引用
【期刊论文】Cost and Effects of Pinning Control for Network Synchronization*
段志生, Rong Lia, †, Zhisheng Duana, Guanrong Chenb
,-0001,():
-1年11月30日
In this paper, the problem of pinning control for synchronization of complex dynamical networks is discussed. A cost function of the controlled network is defined by the feedback gain and the coupling strength of the network. An interesting result is that lower cost is achieved by the control scheme of pinning nodes with smaller degrees. Some rigorous mathematical analysis is presented for achieving lower cost in the synchronization of different star-shaped networks. Numerical simulations on some non-regular complex networks generated by the Barab´asi-Albert model and various star-shaped networks are shown for verification and illustration.
complex dynamical network,, pinning control,, exponential stability.,
-
28浏览
-
0点赞
-
0收藏
-
0分享
-
48下载
-
0评论
-
引用
【期刊论文】Network synchronizability analysis: A graph-theoretic approach
段志生, Guanrong Chen, , a), and Zhisheng Duan, b)
CHAOS 18, 037102(2008),-0001,():
-1年11月30日
This paper addresses the fundamental problem of complex network synchronizability from a graphtheoretic approach. First, the existing results are briefly reviewed. Then, the relationships between the network synchronizability and network structural parameters e.g., average distance, degree distribution, and node betweenness centrality are discussed. The effects of the complementary graph of a given network and some graph operations on the network synchronizability are discussed. A basic theory based on subgraphs and complementary graphs for estimating the network synchronizability is established. Several examples are given to show that adding new edges to a network can either increase or decrease the network synchronizability. To that end, some new results on the estimations of the synchronizability of coalescences are reported. Moreover, a necessary and sufficient condition for a network and its complementary network to have the same synchronizability is derived. Finally, some examples on Chua circuit networks are presented for illustration.
-
117浏览
-
0点赞
-
0收藏
-
0分享
-
59下载
-
0评论
-
引用
【期刊论文】A MODIFIED CHUA’S CIRCUIT WITH AN ATTRACTION-REPULSION FUNCTION*
段志生, RONG LI†, ZHISHENG DUAN and BO WANG
International Journal of Bifurcation and Chaos, Vol. 18, No. 7(2008)1865-1888,-0001,():
-1年11月30日
In this paper, the original Chua’s circuit is modified by substituting its piecewise-linear function with an attraction-repulsion function. Some new complex dynamical behaviors such as chaos are observed through computer simulations. Basic properties of the new circuit are analyzed by means of bifurcation diagrams. Lagrange stability conditions of the circuit are derived. A comparison between this modified Chua’s circuit with an attraction-repulsion function and the modified Chua’s circuit with a cubic nonlinear function is presented. Moreover, a generalization of the new circuit that can generate multiple scrolls is designed and simulated. Finally, a physical circuit is built to visualize the new system, with some experimental observations reported.
Attraction-repulsion function, chaos, bifurcation, Lagrange stability, Chua’s circuit.,
-
57浏览
-
0点赞
-
0收藏
-
0分享
-
48下载
-
0评论
-
引用