Results 251 to 260 of about 33,178 (299)

Disturbance Observer With Constraints

IEEE Control Systems Letters
The disturbance observer (DOB) technique is widely adopted to reject unknown disturbances for accurate and robust control performance with numerous variants.
Tae Ho Yun, Minjun Kim 0003
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Disturbance observer-based disturbance attenuation control for a class of stochastic systems

Automatica, 2016
This paper studies a class of stochastic systems with multiple disturbances which include the disturbance with partially-known information and the white noise.
Xinjiang Wei, Hamid Reza Karimi
exaly   +2 more sources

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On the robustness of disturbance observer

2014 IEEE 13th International Workshop on Advanced Motion Control (AMC), 2014
Disturbance observer (DOB) is one of the most popular robust control tools due to its simplicity and efficiency. The robustness of a DOB based control system changes significantly by the dynamic characteristics of the DOB's low-pass-filter (LPF) and nominal plant.
Emre Sariyildiz, Kouhei Ohnishi
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
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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
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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
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Disturbance observers for general exogenous disturbances

2019 IEEE International Conference on Mechatronics and Automation (ICMA), 2019
We examine a parameterization of linear disturbance observers for general exogenous disturbances. Using the states and inputs of the system as variables, we got an parameterization of linear disturbance observers for general exogenous disturbances in frequency domain formulation.
Chuanfeng Zang, Jessada Juntawongso, Kotaro Hashikura, Md Abdus Samad Kamal, Kou Yamada   +4 more
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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
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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
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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 ...
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