Results 31 to 40 of about 6,176 (260)

Disturbance observer-assisted hybrid control for autonomous manipulation in a robotic backhoe [PDF]

open access: yesArchive of Mechanical Engineering, 2019
Automation of earth moving machineries is a widely studied problem. This paper focusses on one of the main challenges in automation of the earth moving industry, estimation of loading torque acting on the machinery.
Meera C S   +2 more
doaj   +1 more source

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

open access: yesJAREE (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

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

open access: yesSensors, 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   +4 more
doaj   +1 more source

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

open access: yesИзвестия 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   +2 more
doaj   +1 more source

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

open access: yesHangkong 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

open access: yesApplied 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   +3 more
doaj   +1 more source

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

open access: yesفصلنامه 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   +5 more
doaj   +1 more source

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

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

open access: yesSICE 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   +2 more
doaj   +1 more source

Interpreting the effects of DNA polymerase variants at the structural level

open access: yesMolecular Oncology, EarlyView.
Using MAVISp and molecular dynamics simulations, we analyzed over 60 000 missense variants in POLE and POLD1 from ClinVar, COSMIC, cBioPortal, and saturation mutagenesis. Identified mechanistic indicators, including stability, binding, and long‐range, enable structural interpretation, providing ACMG‐like evidence for possible reclassification of VUS ...
Matteo Arnaudi   +7 more
wiley   +1 more source

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