The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper proposes a sliding mode estimation-based control to solve the stochastic time delay problem in networked microgrid, because stochastic delay has a great impact on the stability and performance of large power grids (LPG). To analyze the delay effects, the microgrid system model is derived according to the characteristics of the inverter in grid-connected microgrid. Based on the microgrid...
The reduced-order H∞ filtering problem for singular neutral systems with distributed delay is investigated in this paper. The Lyapunov stability theory and linear matrix inequality (LMI) approach are proposed to design a reduced-order H∞ filter such that the filtering system remains asymptotically stable and the bound of H∞ norm is less than a given level γ. Moreover, an explicit parametrization of...
This paper investigates the synchronization of fractional-order general complex dynamical networks with coupling delay. Based on the stability theory of the fractional-order system, the sufficient criteria for synchronization are derived analytically by applying the linear control methods. The proposed synchronization method is applicable to almost all kinds of coupled fractional-order general complex...
This paper has proposed a design for networked control systems with random time delays and packet dropout in the forward communication channel by using fuzzy theories. First, a simple predictive model was built by means of fuzzy cluster modeling technology and neural network approximation. Then, a prediction oriented fuzzy sliding mode controller was presented to obtain the future control actions'...
For polynomial fuzzy system with time delay, this paper presents a new polynomial fuzzy observer design approach via sum of squares approach. We propose an algorithm to design polynomial fuzzy controller and observer satisfying the stability of the overall control system in addition to converging state estimation error to zero. The stability analysis for the augmented systems of the time-delay polynomial...
This paper is concerned with the formation control of multiple fight vehicles, and by introducing the energy states, an energy-based cooperative method is proposed. The fight vehicle system is modelled with the communication topology and formation description. Then, the cooperative formation strategy is discussed with collision avoidance. It provides the formation commands which are transformed into...
This paper proposes a novel method to graphically compute all feasible gain and phase margin specifications-oriented robust and optimal fractional PID controllers to stabilize time delay processes (TD) of any order. The gain-phase margin tester method is utilized to guarantee the concerned systems certain robust safety margins and test the constant gain margin boundary, constant phase margin boundary,...
In this paper, a feed-forward disturbance compensation model predictive control (MPC) method is proposed for rudder roll stabilization (RRS). Rudder roll stabilization is an underactuated problem with actuator saturation, the roll and heading of ship will be controlled by the rudder with limited rudder angle and rudder rate. MPC deals with the underactuated and constrained problem elegantly by means...
In this paper, Maclaurin expansion and Padé approximation are utilized to handle the RHP zeros in the simplified decoupling control and the choosing strategy is given. To improve the robustness of each loop, Active Disturbance Rejection Control (ADRC) is adopted as a good solution which can estimate and compensate the total disturbances by the extended state observer (ESO). Besides, the stability...
This paper investigates the attractor and stability of delayed Boolean networks (DBNs) with/without state constraints by using the semi-tensor product of matrices. Firstly, the dynamics of DBNs with/without state constraints is converted into an equivalent algebraic form via the semi-tensor product of matrices. Secondly, based on the algebraic form, a new formula is proposed for the calculation of...
Small input delay is always ignored for designing a simple controller in many practical applications. However, this paper will tell us that small input delay have a significant impact on high-frequency vibration system, the amplitude of the high-frequency vibration system will be greatly enlarged even if the input delay is small enough. For explaining such viewpoint, a vibration system with high natural...
This paper deals with the control of simple process models where multiple time-delays appear. These delays can be input, output or state delays. For the case of input/output time-delays, a general solution is retrieved from the literature. For state time-delays, the scalar case is considered and a pre-compensator is used to cancel the delay. The proposed algorithms are applied to the control of a...
In this paper, a new method is presented for identification of single-input single-output (SISO) nonlinear systems with long time delay. The proposed dynamic extreme learning machine (DELM) is different from extreme learning machine in that it adds adaptive delay parameters in the output layer of the network, and the delay parameter is optimized by use of particle swarm algorithm. The dynamic extreme...
This paper investigates the problem of mean square finite-time passivity for discrete-time Markov jump neural networks with time delays and stochastic perturbations. In the measurement equation, a class of sensor nonlinearities are considered, which cover the standard Lipschitz condition as a special one. A sufficient mean square finite-time boundedness condition is established based on Lyapunov-like...
This paper investigates the stochastic finite-time stability (SFTS) problem for a class of Markovian jump nonlinear systems with time delays. The nonlinear terms are assumed to satisfy the Lipschitz conditions, and the time delays are modelled by mutually independent stochastic variables subject to Bernoulli distributions. The aim of our work is to design a set of linear feedback controllers such...
This paper deals with the H∞ finite-horizon filtering for discrete piecewise linear systems with infinite distributed delays and quantization effect. The modes and their transitions of augmented piecewise linear systems are formulated. The quantisation phenomenon is described by the logarithmic function and the time delays are assumed to be randomly occurred and infinitely distributed in the discrete-time...
This paper is concerned with the fusion estimation problem for multi-sensor discrete time-invariant linear systems with multiple time delays and colored measurement noise. In order to transform those systems into systems with correlated white noise, a system transformation method is introduced. A sequential covariance intersection (SCI) fusion Kalman filter is given based on the local optimal recursive...
This paper is concerned with the multi-sensor optimal information fusion issues for discrete-time systems with random delayed which is time-stamped. The random delayed system is reconstructed as an equivalent delay-free one by means of the measurement reorganization technique when the random delay is time-stamped. Based on the altered system model, firstly an optimal linear filter is presented for...
The ELM is used to predict the delay, and combines with implicit generalized predictive control (IGPC) to compensate time delay in this paper. The random time-delay in the networked control system (NCS) can usually deteriorate the control performance and stability of networked control system. In order to solve this problem, this paper puts forward the networked time delay in a short time based on...
In this paper, we consider robust stability analysis of a networked system with uncertain communication delays. Each subsystem of these systems can have different dynamics, and interconnections among the subsystems are arbitrary. It is assumed that there exists an uncertain but constant delay in each communication channel. Based on the integral quadratic constraint (IQC) framework, a sufficient robust...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.