Results 51 to 60 of about 6,220 (190)

Control Force Characteristics and Seismic Control Performance Produced by Deep Reinforcement Learning

open access: yesStructural Control and Health Monitoring, Volume 2026, Issue 1, 2026.
Structural control plays a critical role in protecting civil structures from earthquakes and other external disturbances. Among various strategies, active control has been widely studied, which uses actuators to apply counteracting forces based on control algorithms.
Takehiko Asai, Francesc Pozo
wiley   +1 more source

Measurement of standing balance ability by a wire driven parallel mechanism

open access: yesNihon Kikai Gakkai ronbunshu, 2014
Falls are a major reason for elderly people to require nursing care. Prevention of falls requires evaluation of standing balance ability of human. Thus various measurements were performed and the relation between the results and occurrence of falls was ...
Hiroshi TACHIYA   +5 more
doaj   +1 more source

Probing the local dynamics of periodic orbits by the generalized alignment index (GALI) method

open access: yes, 2011
As originally formulated, the Generalized Alignment Index (GALI) method of chaos detection has so far been applied to distinguish quasiperiodic from chaotic motion in conservative nonlinear dynamical systems.
Antonopoulos Ch.   +10 more
core   +2 more sources

Impedance Controller Tuned by Particle Swarm Optimization for Robotic Arms

open access: yesInternational Journal of Advanced Robotic Systems, 2011
This paper presents an efficient and fast method for fine tuning the controller parameters of robot manipulators in constrained motion. The stability of the robotic system is proved using a Lyapunov‐based impedance approach whereas the optimal ...
Haifa Mehdi, Olfa Boubaker
doaj   +2 more sources

Development of bilateral remote controller “Armrest Joystick” (Design of controller mechanism with weight compensation)

open access: yesNihon Kikai Gakkai ronbunshu, 2016
Remotely operated mobile robots are demanded in many disaster fields, such as Nuclear/Biological/Chemical(NBC) terrorist attacks, earthquake and tsunami, and even in minefields, to assure safety for the human workers.
Hiroaki ISHIDA   +4 more
doaj   +1 more source

RoboBat: Dynamics and Control of a Robotic Bat Flapping Flying Testbed [PDF]

open access: yes, 2011
This paper investigates the control of the phase difference in between three different motions of bat flight: pitching, mapping, and lead-lag. For active control, a robotic bat test bed capable of simulating different wing motions is used to test the ...
Chung, Soon-Jo   +2 more
core   +1 more source

A Large-Stroke 3DOF Stage With Integrated Feedback in MEMS

open access: yesJournal of Microelectromechanical Systems, 2015
In this paper, we design, fabricate, and validate a large-stroke 3-degree-of-freedom (DOF) positioning stage with integrated displacement sensors for feedback control in a single-mask microelectromechanical systems (MEMS) fabrication process. Three equal shuttles exactly define the position of the stage in x, y, and Rz.
Krijnen, Bram   +4 more
openaire   +1 more source

Anti‐frequency long short‐term memory model for stable estimation of structural response under noise conditions

open access: yesComputer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 26, Page 4632-4650, 7 November 2025.
Abstract Deep learning models for structural response estimation exhibit degraded performance when the training and input data characteristics differ, particularly because of noise. This study proposes an anti‐frequency long short‐term memory (AF‐LSTM) model designed to ensure a stable estimation regardless of noise conditions. The term “anti‐frequency”
S. Park, D. Y. Yun, H. S. Park
wiley   +1 more source

Comparing and Contrasting Near-Field, Object Space, and a Novel Hybrid Interaction Technique for Distant Object Manipulation in VR

open access: yesVirtual Worlds
In this contribution, we propose a hybrid interaction technique that integrates near-field and object-space interaction techniques for manipulating objects at a distance in virtual reality (VR).
Wei-An Hsieh   +4 more
doaj   +1 more source

Heeling Moment Acting on a River Cruiser in Manoeuvring Motion

open access: yesPolish Maritime Research, 2016
By using fully theoretical method the heeling moment due to centrifugal forces has been determined for a small river cruiser in turning manoeuvre.
Tabaczek Tomasz, Kulczyk Jan
doaj   +1 more source

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