optimal control of switched systems with time delay

... interest of this paper is concerned with the positivity and stability of solutions independent of the sizes of the delays and also being independent of eventual coincidence of some values of delays ... independent of the sizes of the delays and the stability properties of linear time- invariant fractional dynamic differential systems subject to point delays may be characterized with sets of precise ... is concerned with the investigation of the solutions of time- invariant fractional differential dynamic systems 23, 24, involving point delays which leads to a formalism of a class of functional...

Ngày tải lên: 21/06/2014, 05:20

... FCNNs with time delays in th e leakage terms and distributed delays. Motivated by the above discussions, the objective of this paper is to formulate and study impulsive BAM FCNNs with time delays ... inequality and stability of BAM FCNNs with time delays in the leakage terms and distributed delays. Journal of Inequalities and Applications 2011 2011:43. Zhang and Li Journal of Inequalities and ... (2010). doi:10.1016/j.nonrwa.2010.03.014 16. Li, X, Cao, J: Delay- dependent stability of neural networks of neutral type with time delay in the leakage term. Nonlinearity. 23, 1709–1726 (2010)....

Ngày tải lên: 21/06/2014, 00:20

... Linearization of LPNI Systems 20 3 Analysis of Reference Tracking in LPNI Systems 66 4 Analysis of Disturbance Rejection in LPNI Systems 114 5 Design of Reference Tracking Controllers for LPNI Systems ... Linearization of LPNI Systems 20 2.1 Stochastic Linearization of Open Loop Systems 20 2.1.1 Stochastic Linearization of Isolated Nonlinearities 20 2.1.2 Stochastic Linearization of Direct Paths of LPNI Systems ... system control- theoretic developments of problems P1–P5, which parallel those of linear control theory, leading to what we call quasilinear control (QLC) theory. The question of accuracy of stochastic linearization,...

Ngày tải lên: 23/03/2014, 15:20

... robust control of frac- tional differential systems with delays. They delt with the BIBO stability of both retarded and neutral fractional delay systems. Zhang [16] established the existence of a unique ... solu- tion and the stability and asymptotic properties of the solution of fractional differential dynamic systems involving delayed dynamics with point delays. El-Sayed and Gaafar Advances in Difference ... Access Stability of a nonlinear non-autonomous fractional order systems with different delays and non-local conditions Ahmed El-Sayed 1* and Fatma Gaafar 2 * Correspondence: amasayed5@yahoo.com 1 Faculty of...

Ngày tải lên: 20/06/2014, 22:20

... survival rates. Of practical interest in ecosystem is the question of whether an ecosystem can withstand those unpredictable forces which persist for a finite period of time or not. In the language of control ... conclusion of Theorem 3.2 holds. This completes the proof of Theorem 3.2. In order to obtain the permanence of the component yn of system 1.3, we next consider the following single-specie system with ... Article The Permanence and Extinction of a Discrete Predator-Prey System with Time Delay and Feedback Controls Qiuying Li, Hanwu Liu, and Fengqin Zhang Department of Mathematics, Yuncheng University,...

Ngày tải lên: 21/06/2014, 11:20

... in ecology is the question of whether or not an ecosystem can withstand those unpredictable disturbances which persist for a finite period of time. In the language of control variables, we call ... therein. Chen 11 considered the permanence of the following nonautonomous discrete N- species cooperation system with time delays and feedback controls of the form x i  k  1   x i  k  exp  r i  k   1 ... pages doi:10.1155/2009/515706 Research Article Permanence of a Discrete n-Species Schoener Competition System with Time Delays and Feedback Controls Xuepeng Li and Wensheng Yang School of Mathematics and Computer Science,...

Ngày tải lên: 21/06/2014, 20:20

Ngày tải lên: 01/01/2014, 07:23

... linearized equations of motion near c ∈ CP 2 , while the Morse index of c is the number of negative eigenvalues of the Hessian matrix of the Hamiltonian at c. Depending on the eigenvalues of this matrix ... T R 3 129 A.2 Fixed Points of the Action of T d ìT on CP 2 130 A.3 Subspaces of CP 2 Invariant Under the Action of T d ìT 131 A.4 Action of T d ìT on the Projections of Nonlinear Normal Modes ... Hamiltonian Systems Nonlinear normal modes correspond to equilibria of the reduced system and by virtue of Michel’s theorem [86] every critical point of the action of D 3 ìT on S 2 is an equilibrium of...

Ngày tải lên: 24/04/2014, 16:50

... out some implications of this result, leaving the details of the proof of achievability to Appendix B. Again, to fix the ideas, consider the set of M active MSs at a given time, one per cell, which ... U. Spagnolini, “Low-SNR analysis of cellular systems with cooperative base stations and mobiles,” in Proceedings of the 14th Asilomar Conference on Signals, Systems and Computers (ACSSC ’06), pp. ... average power constraint of P so that the available power per cell is  P = JP. With intracell TDMA, each MS is active for a fraction 1/J of the time, wherein it can transmit with power  P, still...

Ngày tải lên: 21/06/2014, 22:20

... required accuracy in the bound. The cutoff rate of GSC systems with M = 4over Nakagami fading channels with m = 2 is shown in Figure 1. In the figure, GSC systems employing 8PSK, QPSK, and BPSK are ... 3 MRC 0 0.5 1 1.5 2 2.5 3 R 0 8PSK QPSK BPSK Figure 1: Cutoff rate of coded GSC with M = 4 and different number of selected diversity branches in Nakagami fading with m = 2. number of combined diversity branches increases, ... fading in wireless communication systems. Diversity improves the performance of communication systems by providing a receiver with M independently faded copies of the trans- mitted signal such...

Ngày tải lên: 21/06/2014, 22:20

... Article Existence Result for a Class of Elliptic Systems with Indefinite Weights in R 2 Guoqing Zhang 1 and Sanyang Liu 2 1 College of Sciences, University of Shanghai for Science and Technology, ... 2008 Recommended by Zhitao Zhang We obtain the existence of a nontrivial solution for a class of subcritical elliptic systems with indefinite weights in R 2 . The proofs base on Trudinger-Moser inequality and ... supported by Innovation Program of Shanghai Municipal Education Commission under Grant no. 08 YZ93. References 1 F. Colin and M. Frigon, Systems of coupled Poisson equations with critical growth in...

Ngày tải lên: 21/06/2014, 22:20

... of a delay difference equation to the values of a solution of a delay differential equation with piecewise constant arguments at integer points. The second method is based on a recursive form of ... Article Exponential Stability of Difference Equations with Several Delays: Recursive Approach Leonid Berezansky 1 and Elena Braverman 2 1 Department of Mathematics, Ben-Gurion University of the Negev, Beer-Sheva ... Journal of Mathematical Analysis and Applications, vol. 336, no. 1, pp. 262–276, 2007. 7 I. Gy ˝ ori, F. Hartung, and J. Turi, “On the effects of delay perturbations on the stability of delay difference...

Ngày tải lên: 22/06/2014, 11:20

... Capacity of Multiantenna Systems with Nakagami Fading” Saralees Nadarajah 1 and Samuel Kotz 2 1 School of Mathematics, University of Manchester, Manchester M60 1QD, UK 2 Department of Engineering ... [1]derivedvarious expressions for the channel capacity of multiantenna sys- tems with the Nakagami fading channel. Most of these are expressed in terms of the integral J(k, β) =  ∞ 0 log  1+ u β  u k/2−1 exp(−u)du,(1) see, ... 2006 Recommended by Dimitrios Tzovaras Explicit expressions are derived for the channel capacity of multiantenna systems with the Nakagami fading channel. Copyright â 2007 S. Nadarajah and S. Kotz. This is...

Ngày tải lên: 22/06/2014, 19:20

... Capacity of Multiantenna Systems with Nakagami Fading Feng Zheng 1 and Thomas Kaiser 2 1 Department of Electronic and Computer Engineering, University of Limerick, Limerick, Ireland 2 Department of ... a generalization of previous MIMO results. On the other hand, there are no reports in the literature on the study of the chan- nel capacity of MIMO systems with the Nakagami fading to the best of the authors’ ... probability decreases considerably with the number of receive a ntennas in the range of whole transmission rate, while P out (R) decreases with the number of transmit antennas when R/W X is lower...

Ngày tải lên: 22/06/2014, 23:20

... addition of a time delay in the feedback path of the loop. This paper has proposed and described a chaos control technique to broaden the tracking range of ZCDPLL with time delay. The delayed ... 1.7comparedtoK 1 = 1.1 for conventional ZCD- PLL with time delay. The proposed chaos-controlled ZCD- PLL with time delay extends the stable region of operation to higher values of K 1 which leads to higher operating ... that for ZCD- PLL with time delay derived in previous section. T he conver- gence region of the conventional ZCDPLL with time delay described by (18) and the proposed chaos-controlled ZCD- PLL...

Ngày tải lên: 23/06/2014, 00:20

... value of the global time. Figure 2.25 shows an example of a timer used to monitor a response. First, the timer T201 is declared (right part). Then after output IAM, T201 is started using SET: timer ... validation of SDL systems by simulation. Very few other commercial tools or languages provide such a range of features for the validation and development of communications systems and software. Some ... simulation tools, with direct explanations. Although this book describes how to validate telecommunication systems, it can be used to validate the behavior of other kinds of real -time systems that...

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