Results 21 to 30 of about 6,700 (266)

Iterative Learning-Based Negative Effect Compensation Control of Disturbance to Improve the Disturbance Isolation of System

Sensors, 2022
At present, the cogging torque of permanent magnet synchronous motors (PMSM) seriously limits the Los pointing accuracy of aviation photoelectric stabilization platforms based on PMSM, which also restricts the requirements of ultra-long-distance and high-
Xiantao Li, Lu Wang, Xianqi Xia, Yuzhang Liu, Bao Zhang   +4 more
doaj   +1 more source

Modelling and Simulation for Small Signal Stability of Multi-machine Power System under Various Disturbance Conditions

JAREE (Journal on Advanced Research in Electrical Engineering), 2020
This paper presents the small signal stability of multi-machine power system over the 58-Bus, 26-Machine, Yangon Distribution Network and is validated with MATLAB software under various disturbance conditions. Time-domain solution analysis is employed to
ohnmar swe
doaj   +1 more source

A Friction Disturbance Compensation Method for Electromechanical Actuator Based on Fractional Order Adaptive Neural Network [PDF]

Hangkong bingqi
Friction torque disturbance affects the tracking performance of electromechanical actuator servo system, bringing position and speed tracking errors, and even may leading to instability of the servo system.
Chen Yufeng, Xu Xiaolu, Zhang Jinpeng, Zhang Kunfeng, Yue Qiang, Zhang Wenjing
doaj   +1 more source

A Study on Optimal Compensation Design for Meteorological Satellites in the Presence of Periodic Disturbance

Applied Sciences, 2018
Periodic disturbance may cause serious effects on the attitude of meteorological satellites, and the attenuation of periodic disturbance is required. In this paper, a fundamental study on the optimal design of constant compensations against known-law ...
Shijie Xu, Naigang Cui, Youhua Fan, Yingzi Guan   +3 more
doaj   +1 more source

Energy-Efficient Power Assist Control with Periodic Disturbance Observer and Its Experimental Verification Using an Electric Bicycle

SICE Journal of Control, Measurement, and System Integration, 2017
This paper addresses the problem of energy-efficient power assist control for quasiperiodic motions. The simplest assist method would be to apply additional torque in proportion to the instantaneous value of torque generated by a user.
Kazuyoshi Hatada, Kentaro Hirata, Takuma Sato   +2 more
doaj   +1 more source

Estimating Disturbance Torque Effects on the Stability and Control Performance of Two-Axis Gimbal Systems

Известия высших учебных заведений России: Радиоэлектроника, 2022
Introduction. Two-axis gimbal systems are applied for stabilizing and controlling the line of sight (LOS) of an optical or imaging system mounted on a moving vehicle.
Ngoc Hung Nguyen, Van Phan Do, Hoa Tien Vu   +2 more
doaj   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

Soft motions encoded by the fold and mediated by conserved hinge sites drive V‐ATPase allosteric machinery and autoinhibition

FEBS Letters, EarlyView.
Vacuolar H+‐ATPase (V‐ATPase) is a multisubunit rotary proton pump that acidifies intracellular compartments. Using elastic network models, we identified conserved hinge residues that govern its large‐scale functional motions. We show that intrinsically encoded ‘soft modes’ drive critical functional transitions, including rotary catalysis and ...
Diksha Parwana, Xiaowei Bogetti, Stuti Sharma, Ivet Bahar   +3 more
wiley   +1 more source

The Precision Improvement of Robot Integrated Joint Module Based on a New ADRC Algorithm

Machines
This article analyzes the factors causing the precision error of the robot joint module, such as gear meshing disturbance, output elastic deformation, and load mutation.
Gang Wang, Shuhua Fang
doaj   +1 more source

Emerging Post‐CMOS Hardware Neurons for Brain‐Inspired Computing: Devices, Circuits, and System Integration

Advanced Functional Materials, EarlyView.
The physical realization of artificial neurons is a critical challenge for energy‐efficient neuromorphic computing. This review presents a comprehensive analysis of the evolution of artificial neuron implementations from conventional CMOS to emerging post‐CMOS technologies.
Kannan Udaya Mohanan, Hocheon Yoo, Benoît H. Lessard, Ioannis Kymissis, Chang‐Hyun Kim   +4 more
wiley   +1 more source