نتایج جستجو برای: time delay control

تعداد نتایج: 3046344  

Journal: :iranian journal of fuzzy systems 0
jiaxian wang school of mathematics and statistics, xidian university, xi'an, 710071, china junmin li school of mathematics and statistics, xidian university, xi'an, 710071, china

in this paper, a new t-s fuzzy hyperbolic delay model for a class of nonlinear systems with time-varying delay, is presented to address the problems of stability analysis and feedback control. fuzzy controller is designed based on the parallel distributed compensation (pdc), and with a new lyapunov function, delay dependent asymptotic stability conditions of the closed-loop system are derived v...

Journal: :the modares journal of electrical engineering 2015
hossein kargar jafar zarei

in this study, a robust controller is designed for fuzzy network control systems (ncss) using the static output feedback. delay and data packet dropout affect on the stability of network control systems, and therefore, the asymptotic stability condition is established considering delay and data packet dropout. delay is time-varying while the lower and upper bounds for delay is defined, and the ...

Journal: :archives of clinical infectious diseases 0
elsadig mohamed faculty of medicine, majmaah university, majmaah, kingdom of saudi arabia; faculty of medicine, majmaah university, majmaah, kingdom of saudi arabia. tel: +96-6530748432 khalid madani faculty of medicine, majmaah university, majmaah, kingdom of saudi arabia sawsan abdalla faculty of medicine, majmaah university, majmaah, kingdom of saudi arabia mohamed ounsa faculty of medicine, the national ribat university, khartoum, sudan hisham abdelraheim faculty of medicine, the national ribat university, khartoum, sudan

background: tuberculosis (tb) is still a major cause of morbidity and mortality in both developed and developing countries. delay in accessing tuberculosis care is associated with the highest densities of mycobacterium tuberculosis (m. tuberculosis) bacilli on sputum smears. objectives: the current study aimed to determine the extent of delay, and the major health system contributing factors to...

2017
Lars M. Göllner Nicola Ballhausen Matthias Kliegel Simon Forstmeier

The delay of gratification (DoG) in children is widely investigated with an experimental procedure originally called the "marshmallow test," whereas the studies on self-regulation (SR) in adolescents and adults usually use self-report questionnaires. Delay discounting (DD) measures simplify the DoG procedure and focus on monetary rewards. The aim of this study was to investigate age differences...

2009
Sue Ann Campbell Toru Ohira Minoru Shinohara

Problems related to the stabilization of an inverted pendulum are an important concern to applied mathematicians and to neuroscientists who work on balance control in humans and two–legged robots. Although feedback delay and the effect of random perturbations (“noise”) pose common and challenging problems there has been little exchange in ideas between the mathematical, engineering and neurosci...

2004
E. K. Boukas E. K. BOUKAS

Abstract: This paper deals with the class of continuous-time linear systems with Markovian jumps and time-delay. The delay in the system dynamics is assumed to be time-varying. Under norm-bounded uncertainties and based on the Lyapunov method, a mixed H2/H∞ controller that minimizes the H2 performance measure when satisfying a prescribed H∞ norm bound on the closed-loop system is proposed. LMI-...

1994
M Kaiser

This paper presents results regarding the application of Time-Delay Neural Networks (TDNNs), up to now mainly used in speech recognition, for control tasks. A set of examples taken from a model-based robot controller is used to validate the suitability of the TDNN and to show its superiority to standard multilayer perceptrons. Afterwards, a new algorithm is presented that shows how the inherent...

Journal: :Presence 2007
Sandra Hirche Martin Buss

Two of the major challenges in networked haptic telepresence and teleaction systems are the time delay associated with the data transmission over the network and the limited communication resources. Sophisticated control methods are available for the stabilization in the presence of time delay. The reduction of haptic network traffic, however, is only poorly treated in the known literature. Dat...

2014
Nguyen Trong Cac Nguyen Xuan Hung Nguyen Van Khang

In the context of Networked Control Systems (NCS), communication time delays strongly influence on the Quality of Control (QoC) of process control applications. The goal of this paper is to propose a way to calculate the closed-loop communication time delay and we compensate this time delay using the pole placement design method in order to improve the QoC for CAN-based NCSs. We consider severa...

2007
Radek Matušů Roman Prokop

The time delay in transport of material and energy is an inseparable part of many real industrial processes. Unfortunately, the presence of time-delay terms itself almost always brings problems in control and, quite naturally, the situation is even more complicated if this delay is uncertain. The source of the uncertainty can arise e.g. from simplifications during mathematical modelling, change...

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