With the increasing need for sustainable energy sources, wind power has gained prominence as a clean and renewable option. Nevertheless, incorporating wind power into the electrical grid at a significant scale can hav...
With the increasing need for sustainable energy sources, wind power has gained prominence as a clean and renewable option. Nevertheless, incorporating wind power into the electrical grid at a significant scale can have a considerable impact on the dynamic behavior of the power system, leading to heightened operational uncertainties. The expanding requirement for power network connection to wind farms has led to the occurrence of rotor angle fluctuations and frequency instability. This paper utilizes a static Synchronous Compensator (staTCOM) along with a multi-band power system stabilizer (MB-PSS) to assess the transient stability of a power grid. To demonstrate the system's efficiency under fault conditions, such as triple line-to-ground faults (LLLG), a nine-bus, three-machine test network incorporating a Doubly Fed Induction Generator (DFIG) has been employed. The system's performance has been evaluated through MATlab/Simulink simulations, which reveal that the combination of staTCOM with MB-PSS produces superior results in enhancing transient stability when compared to the scenarios of using staTCOM alone or not using it at all.
In this paper, we suggest an adaptive control for a multilateral teleoperation system (MTS) with an unknown upper limit on the system uncertainty (SU) and varying-time delay (VTD). A novel adaptive global sliding mode...
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ISBN:
(纸本)9781665482622
In this paper, we suggest an adaptive control for a multilateral teleoperation system (MTS) with an unknown upper limit on the system uncertainty (SU) and varying-time delay (VTD). A novel adaptive global sliding mode (AGSMC) has been addressed, which guarantees the elimination of the reaching phase and forces the tracking error to reach the sliding surface (SS) from the beginning. Moreover, the adaptive tuning law has been addressed in order to deal with the undetermined upper limit of the SU. The convergence and stability analysis of the proposed methods is verified by the Lyapunov stability theory. The simulation is carried out on 1 master, 1 leader, and 3 followers teleoperation system is developed to show the effectiveness of the developed control.
In this paper a finite-time second order sliding mode control for the teleoperation system in presence of uncertainties, disturbances and time delay is exposed. First, the second order fast nonsingular terminal slidin...
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ISBN:
(纸本)9781665482622
In this paper a finite-time second order sliding mode control for the teleoperation system in presence of uncertainties, disturbances and time delay is exposed. First, the second order fast nonsingular terminal sliding mode surface is designed to guarantee a finite time convergence and to eliminate the singularity problem. Then, a robust control law is developed to achieve high precision tracking and strong robustness against parametric uncertainties, disturbances, and time delay. The proposed idee consist to use the discontinuous function in the time derivative of the control input. Then, the proposed control, obtained by integration, is applied to the system in order to eliminate the chattering phenomenon and reduces the amplitude of the control effort. The stability of the system is demonstrated using the Lyapunov theory.
This paper discusses, a robust nonsingular fast terminal sliding mode (NFTSM) control for a parallel robot PAR4 is developed with known or unknown upper bound of the system uncertainty. The proposed controller takes t...
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ISBN:
(纸本)9781665482622
This paper discusses, a robust nonsingular fast terminal sliding mode (NFTSM) control for a parallel robot PAR4 is developed with known or unknown upper bound of the system uncertainty. The proposed controller takes the benefit of the NSFTSM to Avoid singularities and confirm a rapid convergence. A NSFTSM control is proposed which offers strong robustness against uncertainties. The convergence and stability of the suggested technique are confirmed by the Lyapunov stability analysis. The simulation results are described to illustrate the efficacy of the suggested control -scheme.
One-Sided Lipschitz (OSL) fractional order modeling is a top choice for solving the stabilization issue of nonlinear systems. Despite numerous studies on the subject, there remains a gap in understanding when it comes...
One-Sided Lipschitz (OSL) fractional order modeling is a top choice for solving the stabilization issue of nonlinear systems. Despite numerous studies on the subject, there remains a gap in understanding when it comes to fractional calculus. By providing a stabilizing strategy for a certain type of OSL fractional order nonlinear systems, this study fills the gap. A numerical example demonstrating the correctness of the suggested approach and demonstrating its efficacy for the tested class.
For the category of large-scale nonlinear processes that are composed of a set of linked monovariable systems and represented by discrete input-output models with unknown time-varying coefficients, the current study p...
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ISBN:
(纸本)9781665482622
For the category of large-scale nonlinear processes that are composed of a set of linked monovariable systems and represented by discrete input-output models with unknown time-varying coefficients, the current study proposes a recursive algorithm of maximum likelihood estimation based on the fuzzy inference technique. This recursive estimator employs a prediction error strategy and a maximum likelihood estimation algorithm to formulate the issue of estimating the parameters of the process under consideration. The established parameter estimation approach is enhanced by the addition of the Mamdani fuzzy inference system. A numerical simulation exemplar is used to verify the efficacy of the generated theoretical results..
A single study has addressed actuator failure reconstruction for the One-sided Lipschitz (OSL) family of nonlinear systems. The predicted fault vector in that work does not provide any insight into the underlying prob...
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ISBN:
(纸本)9781665482622
A single study has addressed actuator failure reconstruction for the One-sided Lipschitz (OSL) family of nonlinear systems. The predicted fault vector in that work does not provide any insight into the underlying problematic physical characteristics of the system, which is a significant shortcoming. In this work, we offer a way for estimating the incorrect physical parameters of actuators using an adaptive observer strategy. To demonstrate the utility of the suggested method, a numerical example and simulation research are provided.
This paper presents the static output feedback control synthesis problem for a class of positive polynomial fuzzy systems with time delay using a sum of squares (SOS) approach. To study the considered analysis and des...
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ISBN:
(纸本)9781665407830
This paper presents the static output feedback control synthesis problem for a class of positive polynomial fuzzy systems with time delay using a sum of squares (SOS) approach. To study the considered analysis and design problems, the polynomial Lyapunov-Krasovskii function is proposed. Based on The sum of squares technique, the polynomial conditions can be directly solved. Finally, a simulation example is given to testify the validity of the analysis result.
In this paper, we study the problem of trajectory tracking control for autonomous marines vehicles using robust sliding-mode controller. The proposed algorithm achieves good tracking performance of marine vehicle in t...
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ISBN:
(数字)9781728188157
ISBN:
(纸本)9781728188164
In this paper, we study the problem of trajectory tracking control for autonomous marines vehicles using robust sliding-mode controller. The proposed algorithm achieves good tracking performance of marine vehicle in the open sea in which there exist severe environmental disturbances and unknowns dynamic parameters. First, the dynamic model in task space of the marine vehicle system in horizontal motion is designed. By using position and velocity tracking errors, a robust controller is then developed based on a linear sliding-mode surface. The designed algorithm is chattering free due to hyperbolic tangent function in switching part. Based on the Lyapunov theorem, the stability in closed-loop system is guaranteed and the convergence of the position and velocity tracking errors are obtained. In addition, the robustness of the controller is verified when disturbances and uncertainties are introduced in the system. Extensive simulations are conducted to demonstrate the validity of the proposed algorithm.
For several years, the focus of recent research has been on solar power and distributed generation (DG) systems, these systems have been widely used in various applications. In photovoltaic grid-connected (GC) and DG ...
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For several years, the focus of recent research has been on solar power and distributed generation (DG) systems, these systems have been widely used in various applications. In photovoltaic grid-connected (GC) and DG systems, one of the objectives that the grid-connected inverters (GCI) is the control of current coming from the photovoltaic modules or DG units. In this way, this paper describes a simple P/Q control strategy for three-phase GCI. Initially, the proposed control of the grid side is introduced. Secondly, to synchronize the grid side voltage with grid current, a synchronous reference frame (SRF) based phase locked loop (PLL) is applied. Finally, the simulation of grid-connected inverters using PSIM is presented to illustrate concepts and results.
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