Nonlinear adaptive tracking control of non-minimum phase hypersonic flight vehicles with unknown input nonlinearity
Sign Up to like & getrecommendations! Published in 2017 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-017-3716-6
Abstract: A nonlinear adaptive controller design method for output tracking of hypersonic flight vehicles (HFVs) subject to input nonlinearity is proposed in this paper. The parameters of the input nonlinearity are assumed to be unknown. This… read more here.
Keywords: unknown input; nonlinear adaptive; nonlinearity; control ... See more keywords
State and unknown input estimation of an anaerobic digestion reactor with experimental validation
Sign Up to like & getrecommendations! Published in 2019 at "Control Engineering Practice"
DOI: 10.1016/j.conengprac.2019.02.003
Abstract: Abstract This paper investigates state and unknown input estimations in an Anaerobic Digestion Reactor (ADR) considering a simple two-stage reaction model describing acidogenesis and methanogenesis. From the sole methane outlet flow, this model allows to… read more here.
Keywords: anaerobic digestion; input; unknown input; digestion reactor ... See more keywords
Sensorless effective wind speed estimation method based on unknown input disturbance observer and extreme learning machine
Sign Up to like & getrecommendations! Published in 2019 at "Energy"
DOI: 10.1016/j.energy.2019.07.120
Abstract: Abstract Precise estimation of effective wind speed plays an important role in the advanced controls aiming at maximizing wind power extraction and reducing loads on turbine components. This paper proposes a sensorless effective wind speed… read more here.
Keywords: speed; unknown input; effective wind; wind ... See more keywords
Active Vibration Control Based on Static Anti-windup Compensator and Unknown Input Observation
Sign Up to like & getrecommendations! Published in 2017 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2017.08.2249
Abstract: Abstract In this paper, the windup problem is addressed for disturbance rejection control (DRC) based on an unknown input observer (UIO). The proposed combination aims at dealing with actuator input nonlinearities in active vibration control… read more here.
Keywords: active vibration; observation; unknown input; vibration control ... See more keywords
Data fusion based multi-rate Kalman filtering with unknown input for on-line estimation of dynamic displacements
Sign Up to like & getrecommendations! Published in 2019 at "Measurement"
DOI: 10.1016/j.measurement.2018.08.057
Abstract: Abstract Structural dynamic displacement is one of the most important measurands that describe the dynamic characteristics of a structure. However, accurate measurement of dynamic displacements of a civil infrastructure is still a challenging task. To… read more here.
Keywords: unknown input; dynamic displacement; rate; multi rate ... See more keywords
Path-guided time-varying formation control with collision avoidance and connectivity preservation of under-actuated autonomous surface vehicles subject to unknown input gains
Sign Up to like & getrecommendations! Published in 2019 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2019.106501
Abstract: Abstract This paper investigates the distributed time-varying formation control for a swarm of under-actuated autonomous surface vehicles subject to unknown input gains, in addition to model uncertainties and ocean disturbances. The fleet is required to… read more here.
Keywords: time varying; control; varying formation; unknown input ... See more keywords
Adaptive distributed unknown input observers for interconnected linear descriptor systems
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Systems Science"
DOI: 10.1080/00207721.2016.1173264
Abstract: ABSTRACT We propose an adaptive distributed algorithm for distributed observers of linear time-invariant descriptor systems. In the proposed algorithm, the interconnection gains of the resulting distributed unknown input observers are adjusted adaptively and the adaptation… read more here.
Keywords: unknown input; input observers; adaptive distributed; distributed unknown ... See more keywords
Robust Adaptive Backstepping Control of Quadrotors With Unknown Input Gains
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3263528
Abstract: Robust adaptive tracking control design for quadrotors with unknown parameters, including the thrust and the drag factors, is presented. Firstly, the adaptive linearizing control approach is employed for conquering the issues of unknown input gains… read more here.
Keywords: control; robust adaptive; quadrotors unknown; unknown input ... See more keywords
Towards Kinematics From Motion: Unknown Input Observer and Dynamic Extension Approach
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Control Systems Letters"
DOI: 10.1109/lcsys.2021.3093067
Abstract: This letter addresses an unknown input observer design to estimate simultaneously the 3D depth of a tracked image feature and the camera linear velocity using a low cost monocular camera and inertial sensor. The camera… read more here.
Keywords: input; unknown input; input observer; approach ... See more keywords
Event-Triggered Control Under Unknown Input and Unknown Measurement Delays Using Interval Observers
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Control Systems Letters"
DOI: 10.1109/lcsys.2022.3220502
Abstract: We provide a new input-to-state stabilizing event-triggered feedback design for linear systems with unknown input delays, unknown measurement delays, and unknown additive disturbances. Our trigger times are computed using only the matrices defining the system… read more here.
Keywords: event triggered; measurement delays; interval observers; unknown measurement ... See more keywords
Tube-Based Control Barrier Function With Integral Quadratic Constraints for Unknown Input Delay
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Control Systems Letters"
DOI: 10.1109/lcsys.2023.3278688
Abstract: This letter proposes a Control Barrier Function (CBF)-based controller design to achieve safety for systems subjecting to unknown input delay and additive disturbance. Integral quadratic constraints characterizing the input-output behavior of the unmodeled dynamics caused… read more here.
Keywords: control barrier; barrier function; tube based; input delay ... See more keywords