نتایج جستجو برای: network control system ncs
تعداد نتایج: 3694468 فیلتر نتایج به سال:
The primary goal of this paper is to study a nonlinear complementarity system (NCS, for short) with and nonhomogeneous partial differential operator mixed boundary conditions, simultaneous distributed-boundary optimal control problem governed by (NCS), respectively. First, we formulate the weak formulation (NCS) variational inequality double obstacle constraints (MVI, short), prove existence un...
We consider a networked control system (NCS) with packet loss being modeled as a stochastic process. We focus on the stochastic H∞ control approach. The designed controller is dynamic in the sense that it depends on the behavior of the lossy channel. First we apply the existing result on H∞ approach for NCS [4] to a teleoperating system. The fixed loss probability assumption in this result has ...
In many control systems, including networked control systems, feedback information is not necessarily continuous or instantaneous, but intermittent, where the loop is closed for finite time intervals. Intermittent feedback is not uncommon in applications, but it has not been adequately studied in control theory. The aim of this work is to explore theoretically the advantages (and disadvantages)...
This paper is concerned with the H∞ control issue for a class of networked control systems (NCSs) with packet dropouts and time-varying delays. Firstly, the addressed NCS is modeled as a Markovian discrete-time switched system with two subsystems; by using the average dwell time method, a sufficient condition is obtained for the mean square exponential stability of the closed-loop NCS with a de...
implicit and unobserved errors and vulnerabilities issues usually arise in cryptographic protocols and especially in authentication protocols. this may enable an attacker to make serious damages to the desired system, such as having the access to or changing secret documents, interfering in bank transactions, having access to users’ accounts, or may be having the control all over the syste...
A nonlinear model predictive control (NMPC) algorithm based on neural network is designed for boiler- turbine system. The boiler–turbine system presents a challenging control problem owing to its severe nonlinearity over a wide operation range, tight operating constraints on control move and strong coupling among variables. The nonlinear system is identified by MLP neural network and neur...
To deal with random delays in Networked Control System (NCS), Modified Fuzzy PID Controller is introduced in this paper to implement real-time control adaptively. Via adjusting the control signal dynamically, the system performance is improved. In this paper, the design process and the ultimate simulation results are represented. Finally, examples and corresponding comparisons prove the signifi...
OBJECTIVE This study evaluated the nerve conduction study (NCS) parameters of the most distal sensory nerves of the lower extremities-namely, the medial dorsal cutaneous (MDC), dorsal sural (DS), and medial plantar (MP) nerves-in diabetic (DM) and impaired glucose tolerance (IGT) patients who displayed normal findings on their routine NCSs. RESEARCH DESIGN AND METHODS Standard NCSs were perfo...
On a radial temperature gradient, C. elegans worms migrate, after conditioning with food, toward their cultivation temperature and move along this isotherm. This experience-dependent behavior is called isothermal tracking (IT). Here we show that the neuron-specific calcium sensor-1 (NCS-1) is essential for optimal IT. ncs-1 knockout animals show major defects in IT behavior, although their chem...
This paper proposes an output feedback method to stabilize and control networked control systems (NCSs). Random time delays and packet losses are treated separately when an NCS is modeled. The random time delays in the controller-to-actuator and sensor-to-controller links are modeled with two time-homogeneous Markov chains, while the packet losses are treated by the Dirac delta functions. An as...
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