This work precisely deals with the phenomena of state tracking, attenuation of external disturbance and compensation of input delay for switched stochastic dynamical systems via improved-equivalent-input-disturbance (...
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This work precisely deals with the phenomena of state tracking, attenuation of external disturbance and compensation of input delay for switched stochastic dynamical systems via improved-equivalent-input-disturbance (IEID) estimator and Smith predictor based modified repetitive control design. By hosting the stochastic state observer and combining it with the IEID estimator and modified repetitive control design, a new closed-loop form of control system is formulated. To be specific, for the resultant closed-loop augmented configuration, a novel criterion which ensures the exponential stability of the considered system is derived in the form of linear-matrix-inequalities in accordance with the Lyapunov theory. Simultaneously, an IEID estimator and Smith predictor based modified repetitive control is designed in such a way that the states of the considered system track the specific reference input signals perfectly. Finally, as an example F-18 aircraft model is provided for describing the competence of the designed controller strategy and to explain the dominance of the obtained proposed controller over the existing results.
This study is concerned with linear-quadratic mean-field game problem for a class of stochastic large-population systems with Poisson processes. The control is allowed to enter the jump diffusion terms of the individu...
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This study is concerned with linear-quadratic mean-field game problem for a class of stochastic large-population systems with Poisson processes. The control is allowed to enter the jump diffusion terms of the individuals' state equation. By virtue of the stochastic Hamiltonian system and Riccati equation for limiting control problem, the decentralised optimal strategies are represented in the open-loop and closed-loop forms, respectively. Different from the existing results, the limit representation of average term is proposed in closed-loop form via the separation technique. Meanwhile, the decentralised optimal strategies are verified to be the epsilon-Nash equilibrium of the original problem. Finally, two practical control problems in engineering and economics areas are presented to demonstrate the good performance of theoretical results.
A stable controller and power management design for an autonomous photovoltaic (PV) system that includes battery storage devices is proposed in this paper. Both the PV and the storage system are interfaced to a dc loa...
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ISBN:
(纸本)9781479959013
A stable controller and power management design for an autonomous photovoltaic (PV) system that includes battery storage devices is proposed in this paper. Both the PV and the storage system are interfaced to a dc load, each via a dc/dc boost power electronic converter. To proceed with the system stability analysis, the complete nonlinear dynamic model of the composite system is developed by taking into account the PV source, battery and converters dynamics. It is shown that the open-loop system has the passivity property, which is preserved in the closed-loop form by suitably designing proportional-integral controllers for the duty-ratio inputs of the power converters. Based on this property, a new sequential method is developed that provides a Lyapunov function capable to prove input-to-state stability (ISS) for the closed-loop system. The ISS property is finally combined with an appropriate power management strategy to guarantee stable operation of the complete autonomous PV system. Simulation results under two different scenarios verify the theoretical analysis and the good performance of the system.
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