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 addresses the parameter identification problem of a fractional order system with a known structure. Thus, based on the variational iteration method, its shown that the identification of the parameters can be formulated as an optimization problem. The objective function is the L2-norm of the error between the measured and the model outputs, and the unknown model parameters are the decision...
In this paper, sliding mode observers are designed in order to estimate actuator and sensor faults for linear fractional-order systems. The system is represented by a commensurate fractional-order state space model, in the presence of unknown sensor and actuator faults. The convergence of the designed observers is established. A numerical example is given to illustrate the effectiveness of the proposed...
In this paper, an approach using a new formalism is proposed to analyze the stability of linear discrete-time fractional-order systems. Asymptotic stability of such systems is examined. Practical asymptotic stability is introduced and illustrated by a numerical example.
In this paper, a novel transmission scheme based on the discrete-time fractional-order chaotic system for private digital communications is proposed. The fractional-order Modified-Henon map is used. By adjusting the fractional-orders appropriately, it has been shown that the fractional-order Modified-Henon system possesses a chaotic behaviour. The exact synchronization based on the delayed observer...
This paper presents an overview and the recent advances of the time domain system identification using fractional models. The main methods are presented and commented for the linear, non-linear and multivariable fractional order systems.
This paper deals with optimal control of fractional order systems using control vector parameterization. The main idea consists in transforming the optimal control problem to a nonlinear optimization problem where the optimization variables are the parameters of the optimal control law to be determined. Thus, by parameterizing the control variable by unknown parameters and by substituting its expression...
In this paper, the robust H∞ control problem is investigated for a class of discrete-time Markov jump uncertain systems subject to unknown transition probabilities. Previous results assume that the transition probabilities are completely known. Here, the more general situation where only upper and lower bounds of theses transition probalities are known. Robust H∞ controller is constructed that guarantee...
The present paper deals with an observer design for a nonlinear lateral vehicle model. The nonlinear model is represented by an exact Takagi-Sugeno (TS) model via the sector nonlinearity transformation. A proportional multiple integral observer (PMIO) based on the TS model is designed to estimate simultaneously the state vector and the unknown input (road curvature). The convergence conditions of...
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.