نتایج جستجو برای: delay control system

تعداد نتایج: 3341361  

2011
Yueheng Li Meiyan Ju Pengfei Ye Lizhong Xu

Wireless sensor network can be applied to large-scale environment surveillance such as marine environment monitoring. In such application case, besides the protocol structure and the energy consumption, the signal’s real-time transmission and successfully transmitting rate of critical nodes also play an important role in improving the whole system’s performance. In this paper, a new parameter c...

1996
Andreas Pitsillides Petros A. Ioannou David Tipper

We consider the combined control problem of connection admission, flow rate, and bandwidth allocation (capacity, service-rate) under nonstationary conditions. A fluid flow model in state variable form describes the time varying mean behaviour of Available Bit Rate (ABR) traffic, which competes with Guaranteed Traffic for network resources. Using nonlinear control we derive an integrated control...

2008
Didier THEILLIOL Youmin ZHANG

The prospective work reported in this paper explores a new approach in order to enhance the performance of an Active Fault Tolerant Control System. This proposed technique is based on a modified recovery/trajectory control system which considered a reconfigurable reference input when performance degradation occurs on system due to faults in actuators dynamics. The added value of this work is to...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 0

a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

Journal: :international journal of smart electrical engineering 2014
heidar ali shayanfar sajad malek

this paper presents a cooperative control which is applied to the secondary control of a microgrid controlled via a multi-agent scheme. balancing power that leads to voltage and frequency stability in a microgrid is essential. the voltage and frequency regulations are limiting within the specified limits and conveying them to their nominal values. limiting and conveying the voltage and frequenc...

2010
Yildiray Yildiz Ilya V. Kolmanovsky

This paper presents a stability analysis and an application of a recently developed Control Allocator for recovery from Pilot Induced Oscillations (CAPIO). When actuators are rate-saturated due to either aggressive pilot commands, high gain flight control systems or some anomaly in the system, the effective delay in the control loop may increase. This effective delay increase manifests itself a...

Journal: :Computer Networks 2001
Mohamed Abdelaziz Ioannis Stavrakakis

It is well established that increased network transmission speed reduces the e€ectiveness of feedback-based adaptive rate control mechanisms, due to the increased bandwidth propagation delay product. In this environment, di€erences in the propagation delays associated with the controlled sources become larger when measured in slots (transmission time of information unit), potentially inducing s...

Journal: :iranian journal of fuzzy systems 2009
han-liang huang fu-gui shi

in this paper we consider the problem of delay-dependent robusth1 control for uncertain fuzzy systems with time-varying delay. the takagi–sugeno (t–s) fuzzy model is used to describe such systems. time-delay isassumed to have lower and upper bounds. based on the lyapunov-krasovskiifunctional method, a sufficient condition for the existence of a robust $h_{infty}$controller is obtained. the fuzz...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده فنی و مهندسی 1387

abstract biometric access control is an automatic system that intelligently provides the access of special actions to predefined individuals. it may use one or more unique features of humans, like fingerprint, iris, gesture, 2d and 3d face images. 2d face image is one of the important features with useful and reliable information for recognition of individuals and systems based on this ...

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