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Actuators
Scopus
ISSN 2076-0825 · MDPI AG · 3.245 artikel di indeks
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Artikel Jurnal Teks lengkap
Development of Virtual Reference-Based Preview Semi-Active Suspension System
This paper presents a virtual reference-based preview semi-active suspension system using a Magneto-Rheological (MR) damper to improve ride comfort when traversing bumps. The algorithm is designed to track the virtual reference profile of the vehicle’s corner by introducing a Model Predictive…
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Integrating Vehicle Slip and Yaw in Overarching Multi-Tiered Vehicle Steering Control to Balance Path Following Accuracy, Gracefulness, and Safety
Balancing path-following accuracy and error convergence with graceful motion in steering control is challenging due to the competing nature of these requirements, especially across a range of operating speeds and conditions. This paper demonstrates that an integrated, multi-tiered steering…
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Active Fault-Tolerant Method for Navigation Sensor Faults Based on Frobenius Norm–KPCA–SVM–BiLSTM
Aiming to address the safety and stability issues caused by typical faults of Unmanned Aerial Vehicle (UAV) navigation sensors, a novel fault-tolerant method is proposed, which can capture the temporal dependencies of fault feature evolution, and complete the classification, prediction, and data…
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Thermo-Structural and Dynamic Performance Analysis of a 42CrMo4 Steel Ball Screw Assembly
This study presents a comprehensive thermo-structural and modal analysis of a ball screw assembly. Thermal analysis revealed a maximum temperature of 29.1 °C at the ball nut, corresponding to a total rise of 7.1 °C above ambient. The resulting thermal deformation reached 77.81 μm, while the von…
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Analysis of Interrupting Energy Variations in MCCBs Under Repetitive Fault Conditions in Accelerator Environments
This study quantitatively analyzed the effects of repetitive fault currents occurring in an accelerator environment on the breaking performance of molded-case circuit breakers (MCCBs). To this purpose, four MCCB samples are subjected to one, two, and three repeated fault tests. The interrupting…
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Numerical and Experimental Analysis of Composite Hydraulic Cylinder Components
Due to a number of advantages, such as the high power-to-weight ratio of the system, the possibility of easy control and the freedom of arrangement of the system components on the machine, hydrostatic drive is one of the most popular methods of machine drive. The actuators in such a system are…
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A Novel Optimization Method for Shape Adjustment of a Large-Scale Planar Phased Array Antenna with Inherent Cables
Large-scale frames are increasingly used in engineering structures, particularly in aerospace structures. Among them, planar phased array satellite antennas used for global observations and target tracking have received much attention. Considering that structural deformation will degrade the…
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Adaptive Compensation Algorithm for Slow Response of TBM Hydraulic Cylinders Using a Parallel Auxiliary Pump
Hydraulic thrust cylinders in hard-rock tunnel boring machines (TBMs) often exhibit slow response and sluggish acceleration during start-up, which degrades early-stage tracking performance and limits overall operational accuracy. Most existing studies primarily enhance start-up behavior through…
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Research on Active Interference Technology Based on Piezoelectric Flexible Structure
To address the issue of voice leakage during the rapid deployment of meeting rooms, a piezoelectric flexible interference structure (PFIS) for active sound masking is developed in this paper. The PFIS uses rubber as the base, allowing it to bend or fold, offering good flexibility. The PFIS…
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Optimal Design of a Coaxial Magnetic Gear Considering Thermal Demagnetization and Structural Robustness for Torque Density Enhancement
This study presents an optimal design combined with comprehensive multiphysics validation to enhance the torque density of a coaxial magnetic gear (CMG) incorporating an overhang structure. Four high non-integer gear-ratio CMG configurations exceeding 1:10 were designed using different pole-pair…
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A Two-Phase Switching Adaptive Sliding Mode Control Achieving Smooth Start-Up and Precise Tracking for TBM Hydraulic Cylinders
Tunnel boring machine (TBM) hydraulic cylinders operate under pronounced start–stop shocks and load uncertainties, making it difficult to simultaneously achieve smooth start-up and high-precision tracking. This paper proposes a two-phase switching adaptive sliding mode control (ASMC) strategy for…
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An Innovative Three-Dimensional Mathematical–Physical Model for Describing Load-Carrying Characteristic of Hydraulic Supports
Reliable posture and loading characteristics detection of hydraulic supports is one of the indispensable factors to realizing the intelligentization of fully mechanized coal mining faces. Due to the complexity and dynamic nature of mining process, achieving real-time and accurate detection of the…
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Electro-Actuated Customizable Stacked Fin Ray Gripper for Adaptive Object Handling
Soft robotic grippers provide compliant and adaptive manipulation, but most existing designs address actuation speed, adaptability, modularity, or sensing individually rather than in combination. This paper presents an electro-actuated customizable stacked Fin Ray gripper that integrates these…
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Dynamic Modeling of Multi-Stroke Radial Piston Motor with CFD-Informed Leakage Characterization
Radial piston motors are expected to expand their applications in hydraulic drive systems due to their high torque density and mechanical robustness. However, its volumetric efficiency can be significantly affected by the multi-stroke operating characteristics and leakage occurring in the…
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Research and Realization of an OCT-Guided Robotic System for Subretinal Injections
For retinal degenerative diseases, advanced therapies such as gene therapy and retinal stem cell therapy have emerged as promising treatments, which are often delivered through subretinal injection. However, clinical subretinal injection remains challenging due to the extremely high precision…
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Design and Investigation of Powertrain with In-Wheel Motor for Permanent Magnet Electrodynamic Suspension Maglev Car
A new type of transportation vehicle, the maglev car, is gaining attention in the automotive and maglev industries due to its potential to meet personalized urban mobility and future travel needs. To optimize the chassis layout of maglev cars, this paper proposes a compact powertrain integrating…
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A Novel Human–Machine Shared Control Strategy with Adaptive Authority Allocation Considering Scenario Complexity and Driver Workload
Human–machine shared control has been widely adopted to enhance driving performance and facilitate smooth transitions between manual and fully autonomous driving. However, existing authority allocation strategies often neglect real-time assessment of scenario complexity and driver workload. To…
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Volumetric Efficiency Prediction of External Gear Pumps Using a Leakage Model Based on Dynamic Clearances
External gear pumps are widely used in industrial hydraulic systems, but their volumetric efficiency can deteriorate significantly because of internal leakage, especially under high-pressure operating conditions. Conventional lumped parameter models typically assume fixed clearances and therefore…
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Trajectory Tracking of a Mobile Robot in Underground Roadways Based on Hierarchical Model Predictive Control
Mobile robots conducting inspection tasks in coal-mine roadways and operating in complex underground environments are often subjected to demanding conditions such as low adhesion, uneven friction distribution, and localized slippery surfaces. These challenges are significant, predisposing the…
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A Double-Integral Global Fast Terminal Sliding Mode Control with TD-LESO for Chattering Suppression and Precision Tracking of Fast Steering Mirrors
This paper describes a composite control approach that improves the accuracy and dynamic performance of the control of a voice-coil-driven, two-dimensional fast steering mirror (FSM). Strong nonlinearity, perturbation of parameters, unmodeled dynamics and external disturbances typically compromise…
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