Estimating unbounded unknown inputs in nonlinear systems
Sign Up to like & getrecommendations! Published in 2019 at "Automatica"
DOI: 10.1016/j.automatica.2019.02.050
Abstract: Abstract Unknown inputs such as attacks on safety-critical systems is a major concern in the design of modern engineering systems. If the underlying system to be protected exhibits nonlinear dynamics, few observers/estimators in the current… read more here.
Keywords: unbounded unknown; inputs nonlinear; estimating unbounded; completely unknown ... See more keywords
Estimation with unknown inputs and uncertainties for sampled-data systems based on quasi sliding mode
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Control"
DOI: 10.1080/00207179.2020.1750706
Abstract: In this work, we consider the problem of simultaneously estimating the system states and unknown inputs in a linear sampled-data system, whose dynamics is influenced by external disturbances and uncertainties. Hardware limitations prevent an estimation… read more here.
Keywords: sliding mode; estimation; system; sampled data ... See more keywords
Functional Observers for Descriptor Systems With Unknown Inputs
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3249099
Abstract: This paper addresses the problem of estimating a functional vector for a class of linear time-invariant descriptor systems with unknown inputs. The unknown inputs are considered in both the system dynamics and measurement equations. The… read more here.
Keywords: systems unknown; descriptor systems; unknown inputs; functional observers ... See more keywords
Finite-Time State-Observer for a Class of Linear Time-Varying Systems with Unknown Inputs
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Automatic Control"
DOI: 10.1109/tac.2021.3096863
Abstract: A finite-time observer for a class of linear time-varying systems with bounded unknown inputs is presented in this note. The design of the observer exploits structural properties of the system and, through a linear operator,… read more here.
Keywords: finite time; linear time; time; observer class ... See more keywords
Finite-Time Secure Dynamic State Estimation for Cyber–Physical Systems Under Unknown Inputs and Sensor Attacks
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Systems, Man, and Cybernetics: Systems"
DOI: 10.1109/tsmc.2021.3106228
Abstract: In this article, an efficient method for finite-time secure dynamic state estimation in cyber–physical systems (CPSs) subjected to unknown inputs and cyber-attacks is proposed. The proposed approach is based on a set of local finite-time… read more here.
Keywords: time; finite time; state estimation; unknown inputs ... See more keywords
Unknown Inputs Nonlinear Observer for an Activated Sludge Process
Sign Up to like & getrecommendations! Published in 2018 at "Mathematical Problems in Engineering"
DOI: 10.1155/2018/1382914
Abstract: This paper deals with the jointly estimation problem of unknown inputs and nonmeasured states of one altering aerated activated sludge process (ASP). In order to provide accurate and economic concentration measures during aerobic and anoxic… read more here.
Keywords: sludge process; process; activated sludge; unknown inputs ... See more keywords
A Kalman Filter with Intermittent Observations and Reconstruction of Data Losses
Sign Up to like & getrecommendations! Published in 2022 at "International Journal of Applied Mathematics and Computer Science"
DOI: 10.34768/amcs-2022-0018
Abstract: Abstract This paper deals with the problem of joint state and unknown input estimation for stochastic discrete-time linear systems subject to intermittent unknown inputs on measurements. A Kalman filter approach is proposed for state prediction… read more here.
Keywords: state; filter intermittent; kalman filter; unknown inputs ... See more keywords