This paper presents an infinite-dimensional Receding Horizon Observer for linear 2x2 hyperbolic systems with boundary measurements. The initial state is estimated as the optimal solution of an optimization problem which minimizes the distance between the measurements and the observer output. A constructive method is used to derive the existence and uniqueness of the solution. A composite strate...

This paper considers the use of neural networks for nonlinear state estimation, system identification and control. As a case study we use data taken from a nonlinear injection valve for a superheater attemporator at a power plant. One neural network is trained as a nonlinear simulation model of the process, then another network is trained to act as a combined state and parameter estimator for t...

This paper presents the frequency domain design of observer based compensators related to arbitrary observer orders for state reconstruction in direct equivalence to the well known time domain approach. The parameterization of the state feedback and of the state observer problems are possible without recurrence to the time domain representations of the system, however, the equivalent time domai...

This paper deals with the problem of observers design for implicit state affine systems for which the observer synthesis depends on the input excitation. Two approaches can be used to solve this problem; The first one consists in designing an observer which requires solving at each time an algebraic equation combined with an ODE system (implicit observer). The second approach proposed in this p...

SUMMARY This paper proposes a robust state observer for multi-input multi-output LTI systems. Unknown inputs of polynomial form and high-frequency measurement noises are considered in the system model. The unknown inputs and the noises are not in the same form. Multiple integra-tions of both the observer error signal and the measurement output are used for the observer design. The existence con...

A hybrid static gain observer for systems described by a linear time-delay continuous part under impulsive feedback is suggested. The purpose of the observer is to asymptotically drive the state estimation error in the continuous states to zero and synchronize the sequence of modulated jump instants estimated by the observer with that of the plant. Conditions on the observer gain matrix to loca...

Globally convergent observers are designed for a class of systems with monotonic nonlinearities. The approach is to represent the observer error system as the feedback interconnection of a linear system and a time-varying multivariable sector nonlinearity. Using LMI software, observer gain matrices are computed to satisfy the circle criterion and, hence, to drive the observer error to zero. In ...