This paper investigates the state-constrained controller design of a hypersonic flight vehicle(HFV) based on an asymmetric barrier Lyapunov function(ABLF). The robust adaptive back-stepping controller with integral te...
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This paper investigates the state-constrained controller design of a hypersonic flight vehicle(HFV) based on an asymmetric barrier Lyapunov function(ABLF). The robust adaptive back-stepping controller with integral terms is applied for the HFV longitudinal dynamics. Considering the asymmetric angle of attack(AOA) constraint caused by the unique structure and scramjet, the controller is modified by constructing an ABLF, where the asymmetric constraint on AOA tracking error is introduced. Combined with the constraint on virtual control, the AOA is restricted to a predefined asymmetric interval. The system stability and the AOA constraint are guaranteed via Lyapunov analysis. Simulation results verify that the AOA can be kept in the given asymmetric interval while the altitude reference signal is tracked.
The goal of this paper is to prove the potential of fractal analysis techniques in evaluation of network characteristics, especially in detection of anomalies, as a method to reveal self-similarities in generated traf...
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ISBN:
(纸本)9781479917815
The goal of this paper is to prove the potential of fractal analysis techniques in evaluation of network characteristics, especially in detection of anomalies, as a method to reveal self-similarities in generated traffic. After a short review of some anomaly detection methods, one describe in detail a statistical signal processing technique based on abrupt change detection. A case study based on real network data from the database of management variables of a SNMP server demonstrates the power of the signal processing approach to network anomaly detection.
This paper deals with the problem of software sensor (state estimation) to study the continuous age structured model of a harvested fish population, in order to get an estimation of the biomass of fishes by age class....
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This paper deals with the problem of software sensor (state estimation) to study the continuous age structured model of a harvested fish population,in order to get an estimation of the biomass of fishes by age *** our...
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This paper deals with the problem of software sensor (state estimation) to study the continuous age structured model of a harvested fish population,in order to get an estimation of the biomass of fishes by age *** our case the fishing effort is considered as a control term,the age classes as a states and the quantity of captured fish as a measured *** continuous non-linear model is first represented by a Takagi-Sugeno ***,we develop a technique for designing a multimodel software sensor (called also observer) corresponding to this system and show its asymptotic *** design conditions are given in linear matrix inequalities (LMI) terms which can be solved efficiently using existing numerical *** simulation results demonstrate the effectiveness of the proposed method.
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