Results 251 to 260 of about 162,627 (299)

Design of a nonlinear disturbance observer

IEEE Transactions on Industrial Electronics, 2000
This paper presents a new disturbance observer based on the variable structure system theory for minimum-phase (with respect to the relationship between the disturbance and output) dynamical systems with arbitrary relative degrees. The model uncertainties and the nonlinear parts of the system are merged into the disturbance term and are regarded as a ...
Xinkai Chen, Satoshi Komada, Toshio Fukuda   +2 more
openaire   +1 more source

Disturbance observers for constant disturbances

2019 16th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2019
The parameterization of linear disturbance observers for constant disturbances has been studied in this paper. By using the states and inputs of the system as variables, the parameterization under constant disturbances was obtained in frequency domain, the validity of the disturbance observer was proofed by simulation.
Jessada Juntawongso, Chuan Feng Zang, Kotaro Hashikura, Takaaki Suzuki, Kou Yamada   +4 more
openaire   +1 more source

Disturbance decoupled functional observers

IEEE Transactions on Automatic Control, 1999
Summary: If a state observer does not exist, it is possible to design a functional observer. Principally, this is also true for systems with unknown inputs (termed as disturbances). Necessary and sufficient conditions for the existence of disturbance decoupled functional observers for linear time-invariant systems are provided.
Ming Hou 0001, A. Clive Pugh, Peter C. Müller 0001   +2 more
openaire   +1 more source

Observations of a Propagating Disturbance in Trace

Solar Physics, 1999
TRACE observations from 13 June 1998 in 171 and 195 A wavelengths show a propagating disturbance, initiated near the origin of a C-class flare. The wave moves through and disrupts diffuse, overarching coronal loops. Only these overlying structures are affected by the wave; lower-lying coronal structures are unperturbed.
M.J. Wills-Davey, B.J. Thompson
openaire   +1 more source

Synthesized Disturbance Observer for Vehicle Lateral Disturbance Rejection

2018 Annual American Control Conference (ACC), 2018
Fast disturbance detection and compensation play an important role in vehicle steering control system. Disturbance observer (DOB) is an effective technique to compensate for the disturbance. However, the design procedure of the DOB requires a stable inverse of the plant and an additional $Q$ filter to guarantee the stability and the robustness to ...
Shiying Zhou, Minghui Zheng, Fu Zhang 0002, Masayoshi Tomizuka   +3 more
openaire   +1 more source

Novel robust disturbance observer

ISA Transactions, 2020
In this paper, a predictive disturbance observer (DOB) design is presented. The proposed DOB does not require a direct model of the process without the transport delay for prediction purposes. The primary advantage of the proposed DOB design is its simplicity due to usage of the prediction block (PB), which approximates the ideal anticipation object ...
openaire   +2 more sources

Disturbance rejection for nonlinear systems with mismatched disturbances based on disturbance observer

Journal of the Franklin Institute, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Huifeng Zhang, Xinjiang Wei, Lingyan Zhang, Meiqin Tang   +3 more
openaire   +2 more sources

Improvement of disturbance suppression based on disturbance observer

9th IEEE International Workshop on Advanced Motion Control, 2006., 2006
This research focuses on improvement of disturbance suppression even under existence of observation noise. Disturbance observer is an effective tool to estimate and compensate disturbance. There is a problem, however, that it cannot accomplish desired disturbance suppression when a large observation noise exists.
M. Mizuochi, T. Tsuji, K. Ohnishi
openaire   +1 more source

Anti-disturbance control based on disturbance observer for nonlinear systems with bounded disturbances

Journal of the Franklin Institute, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhang H., Wei X., Karimi H. R., Han J.
openaire   +2 more sources

Fault diagnosis with disturbance rejection performance based on disturbance observer

Proceedings of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference, 2009
In this paper, a new fault diagnosis approach presented for a class of non-linear systems with external urbances. The unknown disturbances are supposed to be rated by an exogenous system, where some classical assumptions on disturbances can be removed.
Songyin Cao, Lei Guo 0003
openaire   +1 more source