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2361
A Conceptual COLREGs-based Obstacle Avoidance Algorithm Implementing Dynamic Path Planning and Collision Risk Assessment
Published 2024-12-01“…The algorithm was applied to simulate past ship-to-ship collision incidents, considering the ship kinematics, dynamics, and maneuverability resulting in successful prevention of such accidents through the proposed approach.…”
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2362
Dynamics of a mechanical system with nonlinear elastic suspension and spectral analysis of the results
Published 2023-09-01“…The article considers the dynamics of a nonlinear mechanical system under the action of a kinematic perturbation on it. The object's vibration isolation system is described by a rigid cubic power characteristic and is based on compensation of external perturbations — the introduction of an additional elastic element with negative stiffness into the suspension. …”
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2363
Parallel Robot Translational Performance Evaluation through Direction-Selective Index (DSI)
Published 2011-01-01“…The investigation is both numerical and experimental and allows highlighting the two chief advantages of the proposed DSIs over more conventional manipulability indexes: not only are DSIs more accurate in predicting the workspace regions where manipulators can best perform translational movements along specific directions, but also they allow foreseeing satisfactorily the dynamic performance variations within the workspace, though being purely kinematic indexes. The experiments have been carried out on an instrumented 4-RUU commercial robot.…”
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2364
Relative Navigation in LEO by Carrier-Phase Differential GPS with Intersatellite Ranging Augmentation
Published 2013-01-01“…Specifically, a cascade-combination of dynamic and kinematic filters which processes double-differenced code and carrier measurements on two frequencies, as well as local inter-satellite ranging measurements, is used to get centimeter-level baseline estimates. …”
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2365
Scaling Analysis on Pulsating Flame Spread over Liquids
Published 2008-01-01“…The Prandtl (Pr) number was introduced to compensate for the different thermal diffusivity and kinematic viscosity of different liquids. Also a nondimensional flame spread rate, V/VD (= Vδ/D, where δ is the quenching distance and D is the diffusivity of fuel vapor) was introduced. …”
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2366
Macroscopic and Microscopic Characterization of the Effect of “Activation” Process on the Performance of Buton Rock Asphalt-Modified Asphalt
Published 2020-01-01“…Laboratory tests show that compared with modified asphalt without activation process, the penetration of the modified asphalt decreases, the softening point rises, the ductility at 5°C and the kinematic viscosity at 135°C all have been increased, and the performance of the modified asphalt increases with the increase of the content of activated BRA. …”
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2367
Surgical Technique of Single-Graft Double-Bundle Posterior Cruciate Ligament Reconstruction Using the Peroneus Longus Tendon
Published 2025-01-01“…Residual knee laxity is decreased, native knee kinematics are better replicated, and improved subjective and objective outcomes have been reported with anatomic double-bundle PCLR. …”
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2368
A super-resolution algorithm to fuse orthogonal CT volumes using OrthoFusion
Published 2025-01-01“…Moreover, it proved beneficial in the context of biplane videoradiography, enhancing the similarity of digitally reconstructed radiographs to radiographic images and improving the accuracy of relative bony kinematics. OrthoFusion’s simplicity, ease of implementation, and generalizability make it a valuable tool for researchers and clinicians seeking high spatial resolution from existing clinical CT data. …”
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2369
GA Based Adaptive Singularity-Robust Path Planning of Space Robot for On-Orbit Detection
Published 2018-01-01“…In this paper, the Cartesian path planning method of velocity level inverse kinematics based on generalized Jacobian matrix (GJM) is proposed. …”
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2370
Re-discussion on Special Class-Ⅱ Mechanism Synthesis Task of Disc Cam Mechanism with Roller Follower in Planar General Motion
Published 2021-07-01“…Considered the cam-roller allowable pressure angle condition <italic>α</italic><sub>1</sub>≤[<italic>α</italic><sub>1</sub>] and the linkage-rocker allowable pressure angle condition <italic>α</italic><sub>2</sub>≤[<italic>α</italic><sub>2</sub>], the special class-Ⅱ mechanisms synthesis task of disc cam mechanisms with roller follower in planar general motion is further explored. Through the kinematic and force analysis of the research object, the condition of <italic>α</italic><sub>2</sub>≤[<italic>α</italic><sub>2</sub>] is transformed into the solution interval of the three force intersection, a new concepts of "instantaneous nested interval of three force intersection" is put forward. …”
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2371
Design and Experiment of End-effectors for Picking Navel Oranges Based on the Underactuated Principle
Published 2024-05-01“…The finite element analysis on the key force parts is carried out, and the motion error caused by the deformation of the key force points is analyzed within the safety error range. The kinematic simulation of the end-effector is carried out by Adams software, and the results prove the feasibility of the end-effector. …”
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2372
Dynamic Analysis and Scale Optimization of Prefabricated Building Wall Panel Installation
Published 2023-04-01“…Taking a new type of prefabricated building wall panel installation machine as the research object, the mechanism configuration and specific implementation are analyzed, the kinematic and dynamic mathematical models of the boom landing mechanism are established, and the functional relationship between the maximum load of the cylinder and the scale parameters is solved. …”
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2373
Transmission error analysis of cycloidal reducers considering crank bearings and output shaft pins
Published 2025-01-01“…To address the issue, a method for calculating transmission error based on the kinematic and mechanical analysis was introduced, thereby offering theoretical foundation for the optimization of design and the enhancement of performance in cycloidal pinwheel reducers.MethodsFirstly, the motion locus of the meshing point between cycloidal gear teeth and pin teeth was obtained based on the instantaneous motion locus of the cycloidal pin gear mechanism and the meshing interval between them. …”
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2374
Finite-Time Path-Following Control of Underactuated AUVs with Actuator Limits Using Disturbance Observer-Based Backstepping Control
Published 2025-01-01“…The proposed cascaded closed-loop control scheme can be described in two separate steps: (1) A kinematic law based on a finite-time backstepping control (FTBSC) is introduced to transform the 3D path-following position errors into the command velocities; (2) The actual control inputs are designed in the dynamic controller using an adaptive fixed-time disturbance observer (AFTDO)-based FTBSC to stabilize the velocity tracking errors. …”
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2375
τ̃ searches at future e+e− colliders
Published 2024-01-01“…The obtained exclusion and discovery reaches extend to only a few GeV below the kinematic limit even in the worst-case scenario. The results of the detailed simulation study are then discussed in view of the experimental environment of other proposed Higgs factory projects.…”
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2376
Design and Stiffness Analysis of the Partial-face TBM Propulsion Mechanism
Published 2023-02-01“…On the basis of inverse kinematics; the rectangular coordinate boundary search method is used to calculate the position workspace of the mechanism. …”
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2377
A Low-Cost Model Vehicle Testbed with Accurate Positioning for Autonomous Driving
Published 2018-01-01“…The position of the vehicles is derived from sensor fusion between Real-Time Kinematic Satellite Navigation (RTK-SN), odometry, and inertial measurement and performs well within a 10 km radius from a base station. …”
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2378
A Method for Space Safety Wall Analysis and Regression Trajectory Planning of Cable-driven Parallel Rehabilitation Robot
Published 2021-02-01“…Firstly, the configuration of the robot is described, and its kinematics model is established by using the closed vector quadrilateral method. …”
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2379
Research on Design and Rehabilitative Action Planning of Pneumatic Driven Exoskeleton Robots for the Shoulder Joint Rehabilitation
Published 2024-10-01“…A pneumatic swing cylinder drive system was designed to provide reverse driving characteristics of robot joints and improve the passive compliance in the rehabilitation training. The kinematics model of the exoskeleton rehabilitation training robot was established, and the simulation results also show that the designed robot workspace can meet the needs of the human shoulder joint rehabilitation training. …”
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2380
Integrated 6-DOF Orbit-Attitude Dynamical Modeling and Control Using Geometric Mechanics
Published 2017-01-01“…Recently, exponential coordinates of SE(3) have been used in dynamics and control of the 6-DOF motion, however, only on the kinematical level. In this paper, we will improve the current method by adopting exponential coordinates on the dynamical level, by giving the relation between the second-order derivative of exponential coordinates and spacecraft’s accelerations. …”
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