characterization of discrete time lti systems

... exponential stabilizability of discrete- time systems with time- delayed states Finally, as an application, we consider the global stabilization of the nonlinear control systems Preliminaries In this ... theorem for discrete- time systems, ” IEEE e Transactions on Automatic Control, vol 41, no 6, pp 903–907, 1996 12 E N Chukwu, Stability and Time- Optimal Control of Hereditary Systems, vol 188 of Mathematics ... 37, no 2, pp 521–542, 1999 10 E K Boukas, “State feedback stabilization of nonlinear discrete- time systems with time- varying time delay,” Nonlinear Analysis: Theory, Methods & Applications, vol...

Ngày tải lên: 21/06/2014, 20:20

... applied to different kinds of complex continuous -time nonlinear systems However, for discrete- time nonlinear systems, especially for complex discrete- time nonlinear systems, those available schemes ... discrete- time systems using neural networks Not only single-input singleoutput (SISO) discrete- time systems are studied in this thesis, but also multi-input multi-output (MIMO) discrete- time systems ... behavior of 1.1 Adaptive Neural Network Control of Nonlinear Systems discrete- time models and continuous -time models In this section, the development in adaptive NN control of discrete- time nonlinear...

Ngày tải lên: 15/09/2015, 21:13

... stability of time- dependent difference equations in Banach spaces,” Journal of the Institute of Mathematics and Its Applications, vol 14, no 3, pp 335–346, 1974 11 S Zhang, “Estimate of total stability ... stability of the system xn Axn−1 Bxn−k , 4.3 where A, B are m×m-matrices, xn ∈ Rm By means of a characteristic equation, they established many results concerning the stability of the solutions of such ... the zero solution of 4.1 - 2.3 is absolutely stable Remark 4.2 I want to point out that this approach is just of interest for systems with “slowly changing” matrices The purpose of this section...

Ngày tải lên: 22/06/2014, 06:20

... radii of linear discrete- time systems and symplectic pencils, Inter J Nonlinear and Robust Control, (1991) 79–97 11 D Hinrichsen and N K Son, Stability radii of positive discrete- time systems ... of interest to consider conditions of robust stability of a polytope of matrices It is well known that, in general, the stability of all vertex matrices is not sufficient for robust stability of ... Vol of Progress in System and Control Theory, Birkh¨user, Basel, 1990, 119-162 a D Hinrichsen and A J Pritchard, On the Robustness of Stable Discrete- Time Linear Systems, In: New Trends in Systems...

Ngày tải lên: 06/08/2014, 05:20

... step of encoding maps the finite set of discrete time, continuous amplitude signals into a finite set of discrete time, discrete amplitude signals A signal x(n) is quantized one block at a time ... as its range A discrete time, discrete amplitude signal has Z as its range Here, the focus is on discrete time signals Quantization is the process of approximating any discrete time, continuous ... the range of x(t) is the set of integers Z, then x(t) is said to be a continuous time, discrete amplitude signal In contrast, a discrete time signal x(n) has Z as its domain A discrete time, continuous...

Ngày tải lên: 18/10/2013, 04:15

Ngày tải lên: 06/03/2014, 17:20

... 284 The antenna-design competencies of the LEAT have been combined with the reverberation chamber measurement skills of the antenna group of Chalmers Institute of Technology Several prototypes have ... the standard deviation of the efficiency measurements is EURASIP Journal on Wireless Communications and Networking Table 1: Comparison of ηtot and the MEG of both antennas of the different structures ... usefulness of our simple solution to achieve efficient antenna systems at the terminal side of a wireless link for diversity or MIMO applications Next studies will focus on the effect of the users...

Ngày tải lên: 21/06/2014, 22:20

... Monotonicity of linear nonnegative dynamical systems In this section, we present our main results for discrete- time, linear nonnegative dynamical systems Specifically, we consider monotonicity of solutions ... Monotonicity of nonlinear nonnegative dynamical systems In this section, we extend the results of Section to nonlinear nonnegative dynamical systems Specifically, we consider discrete- time, nonlinear ... QG(x) ≤≤ 0, x ∈ R+ Then ˆ the discrete- time, nonlinear nonnegative dynamical system Ᏻ is partially monotonic with ˆ respect to x Proof The proof is similar to the proof of Theorem 3.2 with Proposition...

Ngày tải lên: 23/06/2014, 00:20

... STABILIZATION AND CONTROL OF UNSTABLE TIME DELAY SYSTEMS LEE SEE CHEK (B.Eng (Hons., 1st Class) UTM, M.Sc NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ELECTRICAL AND COMPUTER ... UNIVERSITY OF SINGAPORE 2012 I Abstract Control theories and designs for stable delay-free systems have been well developed in research society and widely adopted in industry Study of time delay systems ... this opportunity to thank Prof Lee Tong Heng, Prof Ben Chen, Assoc Prof Xiang Cheng and Prof Xu Jianxin for their courses which built up my fundamentals on the theory of control Besides, I am grateful...

Ngày tải lên: 09/09/2015, 17:57

... Hardware/Software Partitioning We develop an efficient scheme for design space exploration in the context of hardware/software co-design of real -time systems Such systems nowadays consist of a heterogeneous ... to the time at which the task begins execution, or can be relative to the ready -time of another job of the same task Therefore, a constraint like the ready-times of two consecutive jobs of a task ... space exploration of realtime embedded systems, and discuss the role of system-level performance analysis in design space exploration cycles 3 1.1 Design Space Exploration Because of the many alternatives...

Ngày tải lên: 11/09/2015, 16:04

... continuoustime design of the controller followed by discretization, and direct discrete- time design of the controller 2.1.1 Discrete- time design Discrete design considers only the values of the ... the point of view of the computer A discrete model of the continuous plant has to be derived before the discrete- time controller can be designed The sampling frequency in the discrete- time controller ... the desired frequency of the closed loop system A rule of thumb to decide the sampling interval for discrete- time control is that one should sample to 10 times per rise time of the closed loop system,...

Ngày tải lên: 04/10/2015, 17:06

... The aim of this article was to give necessary and sufficient conditions for existence and uniqueness of solutions for generalized linear discrete- time boundary value problems of a class of linear ... vectors the p linear independent eigenvectors of the finite generalized eigenvalues of sF-G (see [1] for an algorithm of the computation of Qp) Proof Let Q = [QpQq], where Qp ∈ Mmp and Qq ∈ Mmq ... doi:10.1186/1687-1847-2011-51 Cite this article as: Dassios: On a boundary value problem of a class of generalized linear discrete- time systems Advances in Difference Equations 2011 2011:51 Submit your manuscript...

Ngày tải lên: 20/06/2014, 22:20

... for adaptive control of linear continuous -time systems, there are lots of counterpart results for linear discrete- time systems, adaptive control of nonlinear discrete- time systems have been considerately ... 1.1.1 Discrete- time adaptive control Discrete- time systems are of ever increasing importance with the advance of computer technology Even at the very early stage of adaptive control development, discrete- time ... only at discretetime instants, and it is sometimes more convenient to model processes in discrete- time for ease of control design Thus, adaptive control and NN control of nonlinear discrete- time...

Ngày tải lên: 14/09/2015, 08:39

... cited 30 Advances in Discrete Time Systems Advances in Discrete Time Systems is used for time- delay systems In the last decade, sufficient stability conditions for time- delay systems have been given ... the proof Robust Control Design of Uncertain Discrete- Time Descriptor Systems with Delays http://dx.doi.org/10.5772/ 51538 35 Robust Control Design of Uncertain Discrete- Time Descriptor Systems ... provide a characterization of all state feedback controllers for solving the discrete- time stochastic mixed LQR/H ∞ control problem for linear discrete- time systems by the technique of Xu (2008...

Ngày tải lên: 14/02/2014, 09:20

... multiplexing (OFDM); 4th generation (4G) Introduction Modern broadband wireless systems must support multimedia services of a wide range of data rates with reasonable complexity, flexible multi-rate ... that of the conventional 2-D CDMA OFDM and MIMO MC CDMA schemes Keywords: code-division multiple-access (CDMA); diversity; space time frequency spreading; multipleinput multiple-output (MIMO) systems; ... in a multi-rate, multiple-access environment In [6], it has been proposed a novel joint time- frequency 2-dimensional (2D) spreading method for OFDM–CDMA systems, which can offer not only time diversity,...

Ngày tải lên: 18/06/2014, 22:20

... Control of Discrete- time LTI Systems: Scaling LMI Approaches 141 Jun Xu Chapter 10 Discrete Time Mixed LQR/H ∞ Control Problems Xiaojie Xu Chapter 11 Robust Control Design of Uncertain Discrete- Time ... discrete- time systems or are mirrors from their counterparts of previously existing continuous -time systems This book attempts to give a scope of the present state -of- the-art in the area of DiscreteTime ... 16 Stability Criterion and Stabilization of Linear Discrete- time System with Multiple Time Varying Delay 283 Xie Wei Chapter 17 Uncertain Discrete- Time Systems with Delayed State: Robust Stabilization...

Ngày tải lên: 20/06/2014, 01:20

... class of nonlinear time- delay systems, Computers & Electrical Engineering 30: 61–71 Xu, S., Lu, J., Zhou, S & Yang, C (2004) Design of observers for a class of discrete- time uncertain nonlinear systems ... one of which for discrete- time systems was presented in (Song et al 2009) In this paper, we generalize the results of (Song et al 2009) on mixed continuous -discrete systems The continuous -discrete ... Observers Design for a Class of Lipschitz Discrete- Time Systems with Time- Delay is equivalent to (80), which is equivalent to M4 < where M is defined in (13) This ends the proof of equivalence between...

Ngày tải lên: 20/06/2014, 01:20

... 50 Discrete Time Systems This completes the proof of Theorem Proof of Theorem a., c Equations (18) and (19) immediately follow from ... Predictors for DiscreteTime Linear Systems with Different Types of Observations, International Journal of Control, Automation, and Systems, Vol 7, No 4, pp 651-658 Sun, S L (2004) Multi-sensor optimal ... O O O 68 Discrete Time Systems Conclusion In this chapter, we considered discrete- time linear stochastic systems with unknown inputs (or disturbances) and studied three types of smoothing...

Ngày tải lên: 20/06/2014, 01:20

... ellipses The use of covariance ellipses allows us to visualize the variance and the cross covariance of a system with two states 106 14 Discrete Discrete Time Systems Time Systems Consider the ... 16 Discrete Discrete Time Systems Time Systems Fig Error variances for uncorrelated noise simulation approach using the Riccati equation The obtained estimator is is capable of dealing with systems ... P11,k+1|k P12,k+1|k T P12,k+1|k P22,k+1|k , (50) 102 10 Discrete Discrete Time Systems Time Systems where, using the definitions presented in Step of Table 2, we obtain T T P11,k+1|k = Ak P11c,k Ak...

Ngày tải lên: 20/06/2014, 01:20