Güncel Gönderiler: Fakülteler
Toplam kayıt 10075, listelenen: 2241-2260
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A Sparse Approach for the Presence Detection of Long-code DS-SS Signals
(IEEE, 2015)In this paper, the presence detection of long-code direct sequence spread spectrum signals (DS-SS) in low signal to noise ratio (SNR) using the sensor array are considered. A sparse method, which is fast and computationally ... -
Prediction of partial synchronization in delay-coupled nonlinear oscillators, with application to Hindmarsh-Rose neurons
(IOP Publishing LTD, 2013)The full synchronization of coupled nonlinear oscillators has been widely studied. In this paper we investigate conditions for which partial synchronization of time-delayed diffusively coupled systems arises. The coupling ... -
Robust flow control in data-communication networks with multiple time-delays
(Wiley, 2010)Robust controller design for a flow control problem where uncertain multiple time-varying time-delays exist is considered. Although primarily data-communication networks are considered, the presented approach can also be ... -
Stable H-infinity flow controller design using approximation of FIR filters
(SAGE Publications LTD, 2012)Stable flow controllers are usually preferred since, compared with unstable flow controllers, they are less sensitive to any modelling imperfections. H-infinity-optimal flow controllers involve finite impulse-response (FIR) ... -
Performance and Robustness of Flow Controllers Designed Using Non-causal Uncertainty Blocks
(Wiley, 2013)According to some recent results, use of non-causal uncertainty blocks may be advantageous in the robust controller design of systems with multiple uncertain time-delays. In this work, performance and robustness improvements ... -
Further remarks on the effect of multiple spectral values on the dynamics of time-delay systems. Application to the control of a mechanical system
(Elsevier Science Inc, 2018)A question of ongoing interest for linear Time-delay systems is to determine conditions on the equation parameters that guarantee the exponential stability of solutions. In recent works a new interesting property of ... -
Performance level and stability margins of an optimal H-infinity flow controller
(SAGE Publications LTD, 2012)Flow controllers are needed to avoid congestion in different types of networks. The dynamics of such networks, however, can usually be represented by infinite-dimensional models, which are either based on partial-differential ... -
Stable H-infinity controller design for systems with multiple input/output time-delays
(Pergamon-Elsevier Science LTD, 2012)The stable H-infinity controller design problem is considered for multi-input-multi-output systems with multiple input/output time-delays. An algorithm is presented to solve this problem. The algorithm makes use of the ... -
Further Remarks on Delay Dynamics in Oregonator Models
(IEEE, 2016)Motivated by the fact that molecules reacting through some biological channels may need some time-lag due transcription and translation processes, this note is devoted to the study of stability properties of a delayed ... -
A small gain theorem for systems with non-causal subsystems
(Pergamon-Elsevier Science LTD, 2008)Small gain theorems are used to verify the stability of a feedback interconnection of causal stable systems. In this work, we extend the small gain condition to test the stability of a feedback interconnection of two stable ... -
Characterization and Computation of Partial Synchronization Manifolds for Diffusive Delay-Coupled Systems
(Siam Publications, 2016)Sometimes a network of dynamical systems shows a form of incomplete synchronization, characterized by synchronization of some but not all of its component systems. This type of incomplete synchronization is called partial ... -
RSS based Localization of an Emitter Using a Single Mini UAV
(IEEE, 2017)In this study, it is aimed to find the position of a signal emitter by the means of a mini unmanned aerial vehicle (mUAV) with a sensor node that can record the received signal strength (RSS) and the global positioning ... -
Comparison of PI controllers designed for the delay model of TCP/AQM networks
(Elsevier Science BV, 2013)One of the major problems of communication networks is congestion. In order to address this problem in TCP/IP networks, Active Queue Management (AQM) scheme is recommended. AQM aims to minimize the congestion by regulating ... -
Evaluating and Approximating FIR Filters: An Approach Based on Functions of Matrices
(IEEE-Inst Electrical Electronics Engineers Inc, 2015)Most of the controllers designed for systems with timedelays involve finite impulse response (FIR) filters in their structure, in particular prediction based controllers for systems with input/output delays. We present ... -
Contactless Respiration Rate Estimation Using MUSIC Algorithm
(IEEE, 2017)In some diseases (sleep apnea, sudden infant death syndrome etc.), continuous monitoring of respiration rate of patient at home during sleep is critically important. Nowadays wireless communications signals are widely used ... -
An H-infinity and Skyhook Controller Design for a High Speed Railway Vehicle
(Elsevier Science BV, 2018)The electronic-based recently developed railway vehicles compromising at high speeds by consuming eco-friendly energy and providing better transportation facilities without complicating the car designs. In this study, the ... -
Track Modelling and Control of a Railway Vehicle
(Elsevier Science BV, 2016)In this paper, a railway vehicle AM96 train developed by Bombardier, Belgium is represented as a half-car model. First, random road defect inputs are modelled as track class 6 from Federal Railroad Administration (FRA) ... -
Effect of Multi-Objective Control on Ride Quality in High Speed Railway Vehicle
(Elsevier Science BV, 2016)The railway transportation has a significant impact on both the freight and passenger carriage, therefore it should provide a comfortable, safe, fast and inexpensive riding. In this paper, a six-degree-of-freedom half-car ... -
Influence of Wheel-Rail Contact Stiffness on the H-2 Controlled Active Suspension Design
(Elsevier Science BV, 2017)In this work, the mathemtical model of a railway passenger car with conventional and radial-elastic wheels is analyzed. Stochastic excitations are applied to the wheelsets. The local elasticity between the wheel and the ... -
Road Profile Modeling by Subspace Identification Methods
(IEEE, 2015)In this paper, spectral models of road profiles using nonparametric and subspace identification methods are developed from road elevation measurements. First, power spectra of road profiles are estimated on uniform grids ...