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641
Empowering IoT: leveraging data sensor communication with LoRAWAN in diverse environments
Published 2025-01-01“… The Internet of Things (IoT) connects countless devices, such as sensors and actuators, necessitating an efficient long-range communication technology. …”
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642
Dynamically reconfigurable acoustofluidic metasurface for subwavelength particle manipulation and assembly
Published 2025-01-01“…The resulting radiation force allows for subwavelength manipulation and patterning of particles on the metasurface at individual and collective scales, with actuation frequencies below 2 MHz. We further demonstrate the capabilities of the reconfigurable metasurface in trapping and enriching beads and biological cells flowing in microfluidic channels, showcasing its potential in high-throughput bioanalytical applications. …”
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643
Light-driven dancing of nematic colloids in fractional skyrmions and bimerons
Published 2025-01-01“…Moreover, distinct topological profiles are realized in the same skyrmion string loop. The light-actuated transformations of fractional skyrmion textures in both straight and loop geometry drive colloidal assemblies to exhibit exotic dynamic behaviors. …”
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644
Dynamic Electromechanical Response of a Viscoelastic Dielectric Elastomer under Cycle Electric Loads
Published 2018-01-01“…The results show that the electromechanical stability has strong frequency dependence; the viscoelastic DE can attain a larger stretch in the dynamic response than the quasistatic actuation. Furthermore, with the decreasing frequency of the applied electric load, the viscoelastic DE system will present dynamic stability evolution from an aperiodic motion to the quasiperiodic motion. …”
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645
Transmembrane voltage-gated nanopores controlled by electrically tunable in-pore chemistry
Published 2025-02-01“…Under negative voltages, precipitates grow to reduce ionic current by occluding the nanopore, while inverting the voltage polarity dissolves the phosphate compounds reopening the pore to ionic flux. Reversible actuation of these physicochemical processes creates a nanofluidic diode of rectification ratio exceeding 40000. …”
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646
Projection-Based Adaptive Backstepping Control of a Transport Aircraft for Heavyweight Airdrop
Published 2015-01-01“…The results show good performance and robust operation of the controller, and the airdrop mission performance indexes are satisfied, even in the presence of ±15% uncertainty in the aerodynamic coefficients, ±0.01 rad/s pitch rate disturbance, and 20% actuators faults.…”
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647
Design Criteria of Soft Exogloves for Hand Rehabilitation-Assistance Tasks
Published 2020-01-01“…Additionally, this study provides a detailed description of each system that was analysed including application, functional task, palm design, actuation type, assistance mode, degrees of freedom (DOF), target fingers, motions, material, weight, force, pressure (only for fluids), control strategy, and assessment. …”
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648
Development of a Multi-DOF Electromyography Prosthetic System Using the Adaptive Joint Mechanism
Published 2006-01-01“…This mechanism includes mechanical torque–velocity converters and a mechanism to assist the proximal joint torque by distal actuators. The other subject is the recognition of the EMG signal. …”
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649
Two-Dimensional Ferroelectric Materials: From Prediction to Applications
Published 2025-01-01“…Ferroelectric materials hold immense potential for diverse applications in sensors, actuators, memory storage, and microelectronics. The discovery of two-dimensional (2D) ferroelectrics, particularly ultrathin compounds with stable crystal structure and room-temperature ferroelectricity, has led to significant advancements in the field. …”
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650
RELAP5/MOD3.3 Best Estimate Analyses for Human Reliability Analysis
Published 2010-01-01“…The purpose of the study was to estimate the operator action success criteria time windows in scenarios in which the human actions are supplement to safety systems actuations, needed for updated human reliability analysis (HRA). …”
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651
From construction machines to remote construction robots: control, interfaces, and usability of the Cranebot
Published 2025-01-01“…Typically, construction machines require the on-site presence of highly skilled users to manage the complexity of their control and the high power of hydraulic actuation. Construction machines could benefit from recent developments of robot avatar technology that has demonstrated the viability of remotizing human physical activities, leveraging on intuitive interfaces and controls. …”
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652
Exponential Fields Formulation for WMR Navigation
Published 2012-01-01“…The framework tackles 4 issues. 1) Reformulation of the Social Force Model (SFM) adapted to WMR; 2) the cohesion of a general inertial scheme to represents motion in any coordinate system; 3) control of actuators rotational speed as a general model regardless kinematic restrictions; 4) assuming detection of features (obstacles/goals), adaptive numeric weights are formulated to affect navigational exponential components. …”
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653
Position Control of the Single Spherical Wheel Mobile Robot by Using the Fuzzy Sliding Mode Controller
Published 2017-01-01“…A spherical wheel robot or Ballbot—a robot that balances on an actuated spherical ball—is a new and recent type of robot in the popular area of mobile robotics. …”
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654
A Vibration Signal-Based Active Noise Control Method for Liquid-Filled Pipelines
Published 2025-01-01“…In this paper, we propose an active noise control method utilizing signals acquired by accelerometers, which adopts offline modeling of the secondary path and the notch narrowband FxLMS algorithm for controlling the secondary source actuation. The feasibility of this method is verified by LabVIEW simulation and active noise control test of the liquid-filled pipeline. …”
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655
Vibration Suppression Method of a Hydraulic Flexible Manipulator based on the System of Piezoelectric Feedback Driven
Published 2016-01-01“…In order to suppress the vibration in the end of large double-link hydraulic flexible manipulator,taking the heavy load hydraulic flexible mechanical arm as the study object and aiming at the end of arm movement in the process of vibration phenomenon,by the servo-hydraulic system-Euler Bernoulli model,Lagrange equation and Jacobian matrix,a piezoelectric feedback driven system control method is designed,through the end of the robot arm equipped with sensitive piezoelectric transmitter,piezoelectric actuators and inversion control design methods,the movement of servo hydraulic cylinder vibration,the hydraulic cylinder with manipulator friction and manipulator rod elastic vibration influence of the hydraulic flexible manipulator end vibration are studied. …”
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656
Tendon Driven Dexterous Hands Based on Airbag Structure
Published 2022-11-01“…A tendon driven dexterous hand based on airbag structure is proposed, which has the advantages of simple actuation, light weight and flexibility. Firstly, the finger structure of the dexterous hand driven by tendon rope and the root joint structure driven by airbag are introduced, where the root joint based on airbag structure consists of six parts: airbag, tension spring, rotating connector, bearing, circlip and palm connection support. …”
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657
Configuration Synthesis of Decoupled Parallel Mechanical Leg of Walking Machining Robot
Published 2019-09-01“…Then, the number of branches and the distribution of DOF on branches can be obtained according to DOF. Next, the actuation screw is used to obtain the driving screw with the aim of movement decoupling by analyzing the kinematics screw and constraint screw of the mechanical leg. …”
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658
Design and Simulation of Cam Pressurized CVT
Published 2015-01-01“…Aiming at the problems of the current CVT actuated by hydraulic control system,such as high energy consumption,complicated control systems,speed ratio and transmission ability being limited by metal belt axial deflection,a new designed cam pressurized CVT hydraulic system is proposed,which is composed of cam automatic pressurized device and closed hydraulic system.The cam pressurized device automatically provides most of the clamping force,the closed hydraulic control system provides the auxiliary clamping force and changes the speed ratio.The new designed hydraulic control system with simple-structure can leave out expensive reversing values and reduce overflow loss,therefore it has advantages of less component parts,energy conservation,environmental protection and low cost.The structure design and working principle of the CVT system are introduced,and the simulation analysis is carried out by using the Matlab/Simulink software.The simulation results show that the cam pressurized CVT hydraulic control system has the significant advantages of fast dynamic response,stable performance and so on.…”
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659
Mechanism Design and Kinematics Analysis of a Hybrid-driven Waist Rehabilitation Robot
Published 2016-01-01“…A cable-pneumatic-muscle hybrid-driven waist rehabilitation robot is designed for human waist and gait rehabilitation training.The presented data and curves indicate that the state of motion of human torso during normal walking and the rehabilitation robotics fundamental functions are confirmed.According to these,the structure of the rehabilitation robot that employed the double parallel mechanism is designed.The cable- driven parallel mechanism is chosen to drive the human lower limb,and the pneumatic muscle(PM) is chosen to twist the human waist.The adaptability and safety of the rehabilitation robot is enhanced by synthesized the features of the two actuators.The inverse kinematics are solved by using the closed-vector-circle method,and the velocity Jacobian matrix is established.In addition,the rehabilitation robotics kinematics model and the PM element thermodynamics model are established in view of the parameters of different trainers is diverse.Then the kinematics character of cables and PM during the normal walking are obtained through numerical simulation,and the force variation trend of PM elements is also simulated to verify the feasibility of mechanism.…”
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660
Pour une approche socio-écosystémique de la dette écologique : une responsabilité civile spécifique en cas d’atteintes à l’environnement
Published 2016-09-01“…Otherwise, the civil liability being already actuated in the case of environmental threats, somes specificities are being studied : which legal relationship exists between society and natural environment, or regarding humans versus the environment ? …”
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