Results 291 to 300 of about 1,424,659 (349)

An Improved Deadbeat Predictive Stator Flux Control With Reduced-Order Disturbance Observer for In-Wheel PMSMs

IEEE/ASME transactions on mechatronics, 2021
In this article, an improved deadbeat predictive stator flux control (DPSFC) based on disturbance observer is proposed to address the problems of the steady-state tracking error and robustness decrease due to the detrimental parameter mismatch and ...
Xiaodong Sun, Yao Zhang, G. Lei, Youguang Guo, Jianguo Zhu   +4 more
semanticscholar   +1 more source

Adaptive Neural Network-Based Finite-Time Impedance Control of Constrained Robotic Manipulators With Disturbance Observer

IEEE Transactions on Circuits and Systems - II - Express Briefs, 2022
This brief proposes an adaptive neural network-based finite-time impedance control method for constrained robotic manipulators with disturbance observer.
Gang Li, Xinkai Chen, Jinpeng Yu, Jiapeng Liu   +3 more
semanticscholar   +1 more source

Improved Deadbeat Predictive Current Control of Dual Three-Phase Variable-Flux PMSM Drives With Composite Disturbance Observer

IEEE transactions on power electronics, 2022
The dual three-phase variable-flux permanent-magnet synchronous motors (VF-PMSM) have received more attention in the variable-speed drive applications since they have advantages of high-efficiency in flux-tuning ability, low current stresses in phase ...
Kailiang Yu, Zheng Wang
semanticscholar   +1 more source

Differentiator-Based Disturbance Observer

2019 IEEE 8th Data Driven Control and Learning Systems Conference (DDCLS), 2019
The analysis of nonlinear disturbance observer (NDO) is first given in detail and an equivalent differentiator structure is used to explain the NDO. The design procedure of NDO is given according to this equivalent structure. Then the structure and principle of the generalized differentiator-based disturbance observer (DBDO) is given and compared with ...
Xiangyang Li, Zhiqiang Gao, Wei Ai, Senping Tian   +3 more
openaire   +1 more source

Event-triggered formation control of AUVs with fixed-time RBF disturbance observer

Applied Ocean Research, 2021
Aiming at the problem of model parameter uncertainty, unknown current disturbance and actuator input saturation of multi-AUVs formation control, an event-triggered formation strategy based on fixed-time Radial Basis Function(RBF) neural network adaptive ...
Hongbin Wang, Bo Su
semanticscholar   +1 more source

Disturbance Decoupled Observers Having Unrestricted Spectrum

Journal of the Franklin Institute, 1982
Abstract The problem of observing the state of a linear finite dimensional system in the presence of unknown disturbance noise is considered. Necessary and sufficient conditions are developed for the existence of a minimal order observer capable of producing an asymptotic estimate of the state of the given system.
Fairman, Frederick W., Hinamoto, Takao, Hirschorn, Ronald   +2 more
openaire   +1 more source

Robust Synchronization for Under-Actuated Vessels Based on Disturbance Observer

IEEE transactions on intelligent transportation systems (Print), 2021
This work focuses on the robust leader-follower synchronization navigation for the under-actuated vessels with only independent the surge control force and the yaw moment. The ocean disturbances and thruster saturation are simultaneously addressed.
Xin Hu, Xinjiang Wei, Y. Kao, Jian Han
semanticscholar   +1 more source

Friction Compensation Via Disturbance Observer

IFAC Proceedings Volumes, 1991
Abstract For the translational movement of a robot arm, which is disturbed by a very strong frictional force, a method is developed to achieve an accurate position control. Therefore, the idealized translar tional degree of freedom, which is represented by a simple second order model, is used as a reference model to the read process.
openaire   +1 more source

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

Passivity-Based Disturbance Observer Design

Volume 1: Adaptive/Intelligent Sys. Control; Driver Assistance/Autonomous Tech.; Control Design Methods; Nonlinear Control; Robotics; Assistive/Rehabilitation Devices; Biomedical/Neural Systems; Building Energy Systems; Connected Vehicle Systems; Control/Estimation of Energy Systems; Control Apps.; Smart Buildings/Microgrids; Education; Human-Robot Systems; Soft Mechatronics/Robotic Components/Systems; Energy/Power Systems; Energy Storage; Estimation/Identification; Vehicle Efficiency/Emissions, 2020
Abstract A design method is proposed for a nonlinear disturbance observer based on the notion of passivity. As an initial application, we consider here systems whose structure comprises a set of integrator cascades, though the proposed approach can be extended to a larger class of systems.
Ying-Chun Chen, Craig Woolsey
openaire   +1 more source