Recently, stability analysis of time-delay systems has received much attention. Rich results have been obtained on this topic using various approaches and techniques. Most of those results are based on Lyapunov stabil...
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Recently, stability analysis of time-delay systems has received much attention. Rich results have been obtained on this topic using various approaches and techniques. Most of those results are based on Lyapunov stability theories. The purpose of this article is to give a broad overview of stabil- ity of linear time-delay systems with emphasis on the more recent progress. Methods and techniques for the choice of an appropriate Lyapunov functional and the estimation of the derivative of the Lyapunov functional are reported in this ar- ticle, and special attention is paid to reduce the conservatism of stability conditions using as few as possible decision vari- ables. Several future research directions on this topic are also discussed.
In this paper, the fixed-time stabilization (FTS) and preassigned-time stabilization (PTS) problems for memristive neural networks (MNNs) with discontinuous activation functions (DAF) is investigated by designing a un...
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The performance of phase-locked loop(PLL) severely affects the system's stability in a three-phase *** methods tend to adopt the idea of single synchronous coordinate transformation,which implements the phase sync...
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ISBN:
(纸本)9781538629185
The performance of phase-locked loop(PLL) severely affects the system's stability in a three-phase *** methods tend to adopt the idea of single synchronous coordinate transformation,which implements the phase synchronization through controlling the q-axis voltage to zero.A novel three-phase PLL is proposed in this paper based on this *** order to obtain better convergence rate near zero,the input of closed-loop PLL is replaced by the ratio of q-axis voltage and d-axis *** fastness and convergence of the system are further analyzed in *** and experiment results show that proposed method can lead to better rapidity,and the phase-locked process is superior to traditional digital PLL methods.
This paper presents a disturbance rejection method that is based on the equivalent-inputdisturbance approach for uncertain fractional-order(FO) systems. An FO observer is used to reconstruct the plant states and estim...
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This paper presents a disturbance rejection method that is based on the equivalent-inputdisturbance approach for uncertain fractional-order(FO) systems. An FO observer is used to reconstruct the plant states and estimate the disturbances. A disturbance estimator is incorporated in the construction of the FO controlsystem to actively compensate for the entire disturbance. A robust stability condition for the controlsystem and the parameters of the controller are derived using an indirect Lyapunov *** presented method effectively rejects disturbances and handles modeling uncertainties without requiring prior knowledge of the disturbance. Comparison simulations on both numerical and practical examples demonstrate the effectiveness of the proposed method.
Speed control mode of a DC motor without knowing the specific parameters of the motor is *** approximate mathematical model of the controlsystem is obtained by the system identification when the output of the system ...
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ISBN:
(纸本)9781538629185
Speed control mode of a DC motor without knowing the specific parameters of the motor is *** approximate mathematical model of the controlsystem is obtained by the system identification when the output of the system is measured by loading the specific input *** PID control algorithm is adopted and the P,I,and D parameters are obtained by auto *** in the loop(HIL) experiments are carried out on MATLAB and Arduino platform,in which the experimental results demonstrate the feasibility of the proposal.
Traditional microwave filter tuning is mainly based on the optimization method, which needs to extract the coupling matrix of scattering parameters in the process of tuning. However, due to actual microwave filter has...
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Traditional microwave filter tuning is mainly based on the optimization method, which needs to extract the coupling matrix of scattering parameters in the process of tuning. However, due to actual microwave filter has phase loading and resistance loss, the extraction result of the coupling matrix may not be accurate, which leads to tuning inefficiency. In order to solve this problem, we present a novel intelligent tuning method by using an improved implicit space mapping algorithm which can optimize the zero pole position. This method is divided into two stages. In the first stage the phase error is used to initial the filter tuning, guaranteeing the return loss of the filter appear in the passband. The second stage realizes the fine tune of the filter. Firstly, the polynomial coefficients of the filter reflection characteristics are extracted by the Cauchy method. Secondly, the relationship between the Screw variation and the polynomial coefficients of the reflection parameters is established based on neural networks. Finally, the mapping relation between the variation of the screw and the variation of poles and zeros position is established by improved implicit space mapping algorithm. The tuning experiment of eight order coaxial cavity filter shows that the method has good tuning effect and quick tuning speed.
This paper describes a parameter of voltage sensitivity to recognize the performance differences of tag antennas for inductively coupled RFID systems. Based on the equivalent circuit model of the RFID tag and reader, ...
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This paper concerns robust stabilization for a class of nonlinear systems with uncertainties and disturbaces. The equivalent-input-disturbance(EID) approach is utilized to estimate the influence of nonlinearities and ...
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ISBN:
(纸本)9781728123295;9789881563972
This paper concerns robust stabilization for a class of nonlinear systems with uncertainties and disturbaces. The equivalent-input-disturbance(EID) approach is utilized to estimate the influence of nonlinearities and exogenous disturbances on the output of the system. A robust stability condition is derived in terms of linear matrix inequalities. Moreover, two parameters are used to tune the robustness of the system. Simulation results show that it is more effective to stabilize the system using the developed method than using the sliding-mode control(SMC) method.
Sinter ore is the raw material of the iron and steel production.A sintering production process is with high energy consumption and large CO *** is important to achieve the green manufacturing of the sinter *** this pa...
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ISBN:
(纸本)9781538629185
Sinter ore is the raw material of the iron and steel production.A sintering production process is with high energy consumption and large CO *** is important to achieve the green manufacturing of the sinter *** this paper,an optimization and controlsystem for the carbon efficiency(OCSCE) in the green manufacturing of the sinter ore is designed from the point of view of the maximum utilization of the carbon and the best protection of environment in the sintering *** OCSCE has three parts:the optimization for the carbon efficiency,the coordinated optimization and control for the production phases and the comprehensive performance evaluation for the carbon *** optimization for the carbon efficiency is used to optimize the state *** coordinated optimization and control for the production phases is applied to optimize and control the operation *** comprehensive performance evaluation for the carbon efficiency assesses whether the carbon efficiency of the whole sintering process is consistent with green ***,an implementation scheme of the OCSCE is put forward for the industrial *** results of preliminary tests show that the OCSCE is in line with the needs of the industrial site,and it will have a significant performance after the OCSCE is put into the industrial site.
This paper investigates the problem of the strictly (\mathcal{Q}, \mathcal{S}, \mathcal{R})-\gamma -dissipativity analysis for Markovian jump neural networks with a time-varying delay. By employing an appropriate Lyap...
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