Leakage accidents in natural gas pipelines bring huge property losses and pose serious safety risks. Therefore, faster and more accurate leakage localization is of great significance. In this paper, a new method based...
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This article addresses the sensor fault estimation and the fault-tolerant control (FTC) problem of the networked control systems (NCSs) with external disturbances and network-induced delay. Firstly, the sensor fault s...
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Three sets of MXene(Ti_(3)C_(2)T_(x))@nano-Fe_(1)Co_(0.8)Ni_(1)composites with 15,45,and 90 mg MXene were prepared by in-situ liquid-phase deposition to effectively investigate the impact of the relationship between M...
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Three sets of MXene(Ti_(3)C_(2)T_(x))@nano-Fe_(1)Co_(0.8)Ni_(1)composites with 15,45,and 90 mg MXene were prepared by in-situ liquid-phase deposition to effectively investigate the impact of the relationship between MXene(Ti_(3)C_(2)T_(x))and nano-Fe_(1)Co_(0.8)Ni_(1)magnetic particles on the electromagnetic absorption properties of the *** microstructure,static magnetic properties,and electromag-netic absorption performance of these composites were *** indicate that the MXene@nano-Fe_(1)Co_(0.8)Ni_(1)composites were primarily composed of face-centered cubic crystal structure particles and MXene,with spherical Fe_(1)Co_(0.8)Ni_(1)particles uniformly distrib-uted on the surface of the multilayered *** alloy particles had an average particle size of approximately 100 nm and exhibited good dispersion without noticeable particle *** the increase in MXene content,the specific saturation magnetic and coer-civity of the composite initially decreased and then increased,displaying typical soft magnetic *** with those of the Fe_(1)Co_(0.8)Ni_(1)magnetic alloy particles alone,MXene addition caused an increasing trend in the real and imaginary parts of the dielectric constant of the ***,the real and imaginary parts of the magnetic permeability exhibit decreasing *** the in-crease in MXene addition,the material attenuation constant increased and the impedance matching *** minimum reflection loss increased,and the maximum effective absorption bandwidth *** the MXene addition was 90 mg,the composite exhib-ited a minimum reflection loss of-46.9 dB with a sample thickness of 1.1 mm and a maximum effective absorption bandwidth of 3.60 GHz with a sample thickness of 1.0 *** effective absorption bandwidth of the composites and their corresponding thicknesses showed a decreasing trend with the increase in MXene addition,reducing by 50%from 1.5 mm without MXene addition to 1 mm with 9
Accurate residual capacity (RC) estimation of batteries is crucial for safe operation of electric vehicles. However, current estimation method has poor generalization ability and low accuracy, which restricts the prom...
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This paper studies global stabilization via predictor-based sampled-data output feedback for a class of feedforward nonlinear time-delay *** that the traditional sampled-data observer via zero-order holder may result ...
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This paper studies global stabilization via predictor-based sampled-data output feedback for a class of feedforward nonlinear time-delay *** that the traditional sampled-data observer via zero-order holder may result in the performance degradation of the *** this paper,an improved predictor-based observer is designed to compensate for the influence of the unmeasurable states,sampling errors and output *** addition,a sampled-data output-feedback controller is also constructed using the gain scaling *** the Lyapunov-Krasovskii functional method,the global exponential stability of the resulting closed-loop system can be guaranteed under some sufficient *** simulation results are provided to demonstrate the main results.
This paper proposes a resonance damping and harmonic suppression control method without capacitor voltage sampling for LCL-equipped HSPMSM drives with a capacitively coupled active damper. The proposed method only nee...
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The exponential growth in the scale of power systems has led to a significant increase in the complexity of dispatch problem resolution,particularly within multi-area interconnected power *** complexity necessitates t...
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The exponential growth in the scale of power systems has led to a significant increase in the complexity of dispatch problem resolution,particularly within multi-area interconnected power *** complexity necessitates the employment of distributed solution methodologies,which are not only essential but also highly *** the realm of computational modelling,the multi-area economic dispatch problem(MAED)can be formulated as a linearly constrained separable convex optimization *** proximal point algorithm(PPA)is particularly adept at addressing such mathematical constructs *** study introduces parallel(PPPA)and serial(SPPA)variants of the PPA as distributed algorithms,specifically designed for the computational modelling of the *** PPA introduces a quadratic term into the objective function,which,while potentially complicating the iterative updates of the algorithm,serves to dampen oscillations near the optimal solution,thereby enhancing the convergence ***,the convergence efficiency of the PPA is significantly influenced by the parameter *** address this parameter sensitivity,this research draws on trend theory from stock market analysis to propose trend theory-driven distributed PPPA and SPPA,thereby enhancing the robustness of the computational *** computational models proposed in this study are anticipated to exhibit superior performance in terms of convergence behaviour,stability,and robustness with respect to parameter selection,potentially outperforming existing methods such as the alternating direction method of multipliers(ADMM)and Auxiliary Problem Principle(APP)in the computational simulation of power system dispatch *** simulation results demonstrate that the trend theory-based PPPA,SPPA,ADMM and APP exhibit significant robustness to the initial value of parameter c,and show superior convergence characteristics compared to the residual balancing ADMM.
To provide an energy-efficient and slab-demand-compliant rolling delay strategy,the simulation software is utilized to calculate the rolling delay process of the reheating *** on energy consumption evaluation,two opti...
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To provide an energy-efficient and slab-demand-compliant rolling delay strategy,the simulation software is utilized to calculate the rolling delay process of the reheating *** on energy consumption evaluation,two optimization methods were *** bisection approach uses the needs of the slab to estimate the rolling delay temperature,and the golden section search method uses the energy consumption analysis of the slab to determine the high-temperature insulation ***,the slab closest to the discharge position in the control zone is selected as the optimization *** optimized slab does not show a significant temperature rise after the end of the rolling delay *** comparing the optimized rolling delay strategies with the traditional ones,the optimized rolling delay strategies not only meet the output requirements for slabs but also offer significant advantages in terms of energy efficiency,and this advantage increases with rolling delay time.
This paper proposes a dynamic gain method to solve the event-triggered output feedback tracking control problem of uncertain strict- feedback nonlinear systems subject to input quantization. The nonlinear terms admit ...
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It is crucial to monitor the operational status of aeroengines by using the digital twin technology to realize virtual-real synchronization for the gas path system. The challenge is to accurately monitor deep paramete...
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