Results 31 to 40 of about 6,216 (258)

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

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

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

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

Design and implementation of hardware-in-the-loop (HIL) test-bed for spacecraft attitude control [PDF]

فصلنامه علوم و فناوری فضایی, 2019
In this paper, the design and implementation of hardware-in-the-loop (HIL) test-bed for spacecraft attitude control are presented with respect to the practical consideration.
Vahid Bohlouri, Hosein Haghighi, Samane Kaviri, Marzieh Taghinezhad, ehsan maani, Soheil Seyedzamani   +5 more
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

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +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

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

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source