Results 311 to 320 of about 1,303,255 (329)

Two-dimensional disturbance decoupled observers†

International Journal of Systems Science, 1987
A procedure is developed for the design of a minimal-order observer capable of estimating the states of a two-dimensional system in the presence of unknown inputs. This is done using singular-value decomposition. The assignment of eigenvalues to the observer is facilitated by choosing the observer structure.
TAKAO HINAMOTO, FREDERICK W. FAIRMAN, JIRO SHIMONISHI   +2 more
openaire   +1 more source

Observer-based inverter disturbance compensation

2009 IEEE Energy Conversion Congress and Exposition, 2009
Most inverter disturbance compensation methods are based on open-loop inverter disturbance estimation. Because of measurement error and switching device parameter uncertainties, the inverter disturbance is not always compensated well. This paper proposes a closed-loop voltage disturbance observer and an observer-based inverter disturbance compensation ...
null Xinmei Yuan, I. Brown, R.D. Lorenz, null Arui Qui   +3 more
openaire   +1 more source

Robot control with disturbance observers

Fifth International Conference on Advanced Robotics 'Robots in Unstructured Environments, 1991
A control system consisting of a bank of single input single output controllers and disturbance observers is proposed for the positional control of multidegree of freedom manipulators. Stability of this control system is analysed and relationships between the manipulator characteristics, the closed-loop bandwidths and bounds on the stability region are
R. Gorez, D. Galardini
openaire   +1 more source

Observation of travelling interplanetary disturbances

Advances in Space Research, 2002
Abstract A travelling interplanetary disturbance (IPD) was detected by the four station interplanetary scintillation (IPS) system of the Nagoya University on October 21, 1995 which has good time agreement with an energetic proton flare on the Sun (>20 Mev) on October 20, associated with AR 7912.
S. Ananthakrishnan, M. Tokumaru, M. Kojima   +2 more
openaire   +1 more source

Disturbance Rejection Through Disturbance Observer With Adaptive Frequency Estimation

IEEE Transactions on Magnetics, 2009
In this paper, a new adaptive disturbance rejection scheme is introduced. In the proposed scheme, adaptive frequency estimation technique is incorporated into the traditional disturbance observer method. The frequency of the dominant disturbance is estimated online by a fast stable adaptive algorithm, and the estimated frequency is used to adaptively ...
openaire   +1 more source

A disturbance observer based intelligent control for nonstrict-feedback nonlinear systems

Science China Technological Sciences, 2023
Hongru Ren, Hui Ma, Hongyi Li, Renquan Lu   +3 more
semanticscholar   +1 more source

Fixed-time disturbance observer-based robust fault-tolerant tracking control for uncertain quadrotor UAV subject to input delay

Nonlinear dynamics, 2022
Kang Liu, Rujing Wang, Shijian Zheng, S. Dong, G. Sun   +4 more
semanticscholar   +1 more source

Yohkoh Observations and Interplanetary Disturbances

1998
Interplanetary disturbances during the five-year Yohkoh era are reviewed. Coronal holes have been observed by Yohkoh as source of recurrent disturbances. They have changed their size and latitudinal distribution according to decrease of solar activity. Large-scale coronal disturbances (LCDs) have been observed in association with coronal mass ejections,
Shinichi Watari, Yukio Kozuka, Takashi Watanabe   +2 more
openaire   +1 more source

Disturbance Observer-Based Finite-Time Control Design for a Quadrotor UAV With External Disturbance

IEEE Transactions on Aerospace and Electronic Systems, 2021
Fang Wang, Hongmei Gao, Kun Wang, Chao Zhou, Q. Zong, C. Hua   +5 more
semanticscholar   +1 more source

Observations on disturbed flames

Symposium (International) on Combustion, 1953
W. Jost, Joachim Krug, L. Sieg
openaire   +1 more source