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1741
Reverberation Mapping of Two Variable Active Galactic Nuclei: Probing the Distinct Characteristics of the Inner and Outer Broad-line Regions
Published 2025-01-01“…Current reverberation mapping (RM) studies primarily focus on single emission lines, particularly the H β line, which may not fully reveal the geometry and kinematic properties of the broad-line region (BLR). …”
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1742
Pursuer Navigation Based on Proportional Navigation and Optimal Information Fusion
Published 2021-01-01“…Pursuer navigation is proposed based on the three-dimensional proportional navigation law, and this method presents a family of navigation laws resulting in a rich behavior for different parameters. Firstly, the kinematics model for the pursuer and the target is established. …”
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1743
Time-optimal Trajectory Planning of 6-DOF Robot based on Genetic Algorithm
Published 2015-01-01“…Firstly,by using the seven times B spline curve,the interpolation of the robot position time series is completed. Then the kinematic constraints are transformed into the constraints of B spline control vertex. …”
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1744
Sintesis Dimensi Manipulator Paralel Bidang Dua Derajat Kebebasan Dengan Rantai Kinematik Paralelogram Simetris
Published 2021-10-01“…The paper discussed the process to find the optimum dimension for the kinematic constants of a two-degree of freedom planar parallel manipulator. …”
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1745
Empirical Data-Driven Linear Model of a Swimming Robot Using the Complex Delay-Embedding DMD Technique
Published 2025-01-01“…This work proposes empirical kinematic control and data-driven modeling of a soft swimming robot. …”
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1746
Analysis and Synthesis of Outside Geneva Combined Mechanism with Uniform Movement
Published 2016-01-01“…The kinematic characteristics of the ordinary geneva wheel mechanism are determined by the numbers of sheave groove. …”
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1747
Design and Research of End-effector for Naval Orange Harvesting
Published 2020-04-01“…As for the problem that the efficiency of picking of naval orange is low,a kind of picking actuator with surrounding and swallowing is designed,whose structure of implement is mainly consisted of multiplex slider rocker mechanism.Firstly,structure sketch of that installation is completed by referring to the operating principle of actuator designed,and the analysis of kinematics and dynamics is carried out.Then,the mathematical model of objective function is established based on the least consuming time,the optimized size of related structure are got by utilizing the Matlab software.Finally,based on the obtained dimension,the 3D model of end-effector is achieved,kinematics simulation is carried out by applying Adams software,the rationality and feasibility of design of actuator for naval orange harvesting is verified,and the theoretical support for the practical picking experiment is provided.…”
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1748
Establishment and Solution of the Error Model for Delta Parallel Robot
Published 2015-01-01“…In order to analyze the influence on absolute positioning accuracy of kinematics parameter errors of the delta parallel robot,apose error model is established and solved.Taking the transmission branch chain as serial mechanism,the kinematics model is solved by establishing D-H transformation matrix.By bringing the micro displacement of the slave arm into the D-H transformation matrix,on the basis of the uniqueness of the pose error of the mobile platform,the error model is established in the form of linear equations.In the end,taking a type of delta parallel robot as example,this model is validated by analyzing the pose error that caused by angle error of the gearbox mounting end face.This pose error model can serve as an analysis tool for the further research of precision analysis and error compensation.…”
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1749
Synthesis and Solution Region Analysis Method of Linear Guide Mechanism
Published 2020-06-01“…The designer calculates the feasible regions that satisfy these constraints by applying some of the architectural kinematic constraints required for the engineering. …”
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1750
A 22 Billion M⊙ Black Hole in Holmberg 15A with Keck KCWI Spectroscopy and Triaxial Orbit Modeling
Published 2025-01-01“…Aided by the superb sensitivity and efficiency of KCWI at the Keck II Telescope, we have obtained spatially resolved stellar kinematics over a ∼100″ × 100″ contiguous field of H15A for this purpose. …”
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1751
Design of Material Transfer Manipulator in Lamp Lens Processing
Published 2020-04-01“…The lamp lens is an important concentrator in the lamp assembly.The disadvantages of the traditional loading and unloading process of the hot forming process of lamp lens are analyzed.A lightweight and large-stroke loading and unloading manipulator is put forward based on the kinematic analysis of the glass rod.Introduced KaDang mechanism to realize the large stroke motion of the manipulator; added slider-crank mechanism to effectively reduce the space size of manipulator.The mutual movements among the components of KaDang mechanism is used to drive the combined mechanism,which can effectively reduce the number of drives and improve the dynamics performance of manipulator.At last,by using the virtual prototype,the kinematic simulation is carried out and the moving trail of manipulator is got,the correctness and superiority of the scheme are verified.…”
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1752
Study on the Transmission Characteristic of Plane Sinusoidal Steel Pin Drive Mechanism
Published 2018-01-01“…By analyzing the working principle and transmission characteristics of the plane sine steel pin drive structure,the method of judging the output rotation direction is obtained,and the formula of its transmission ratio is deduced. The kinematic characteristics and accuracy of the device are verified by kinematics simulation,the basis for the design and application of the mechanism is provided.…”
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1753
Analysis and Simulation of Collaborative Space of the Dual Arm 6R Service Robot
Published 2018-01-01“…Firstly,according to the configuration of the manipulator,the standard DH method is used to construct the model,and then the forward kinematics equation of the arms is obtained. Secondly,the work space of each arm is got by using Monte Carlo method. …”
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1754
Research of Reachable Workspace of 2-RPR+RRP Spherical Hybrid Mechanism
Published 2017-01-01“…Secondly,taking the geometric relation of mechanism as the constraint condition and combining with the rotation matrix,the mathematical model of the closed positive solution of the kinematics position of the mechanism is established. …”
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1755
Analysis of the Design Space and Dexterity of a Planar Two Degree of Freedom Parallel Manipulator
Published 2015-01-01“…A novel planar two degree of freedom parallel manipulator is presented,its moving platform of the manipulator has smaller inertia and the output of the manipulator is planar translational motion.Unlike the traditional optimum analysis method,not only the geometric parameters,but also the range of the linear actuators of the manipulator are considered as the kinematics parameters,the design space is obtained by normalizing the actuation and geometric parameter.The dexterity performance index is calculated in the design space,the dexterity atlas of the manipulator is plotted.The dexterity atlas reflects the relationship between the dexterity performance index and the kinematics parameters of the manipulator.The dexterity atlas is very useful for the design of the new manipulator and the new method also provides a simple,comprehensive and effective way for design parallel manipulator that is actuated by linear actuators.…”
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1756
Study on the Motion Law of Logarithmic Spiral Type Cam Mechanism
Published 2015-01-01“…The solid models of the logarithmic spiral cam mechanism and common cam mechanism are established by using SolidWorks,and the kinematics simulation is carried out.Then,by using the software of ANSYS / LS-DYNA,the dynamics analysis of the two kinds of cam mechanism is carried out,and the variation situation of the maximum stress of cam mechanism and the follower changing with time is obtained.By contrast analysis between the dynamics simulation and the kinematical simulation of logarithmic spiral cam mechanism and common cam mechanism,find that the logarithmic spiral cam mechanism drive is more steady during the operation,and the force variation and the average stress of cam and follower are lower,which indicates that the logarithmic spiral cam mechanism is superior to common cam mechanism,and possessed of popularization and application value.…”
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1757
Path Planning for Spider Biomimetic Robot Leg based on Cubic Polynomial Interpolation Function with Midpoints
Published 2017-01-01“…A new spider biomimetic robot with 18 joints and 6 legs is designed,which can be flexible movement in tunnel space. The kinematics model of the robot leg is built with D-H modeling method,and the inverse kinematics equation is deduced. …”
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1758
Modeling Behaviors for a New Compliant Mechanism by Recursive Hierarchy of Random Forest Models
Published 2025-01-01“…Compliant mechanisms have been widely employed for precision engineering. Due to a kinematic coupling between rigid kinematics and flexible kinematics of compliant mechanisms, modeling behavior of two degrees of freedom (2-DOF) compliant mechanism is a challenging task. …”
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1759
RESEARCH AND APPLICATION ON THE HIGH SPEED CAM MECHANISM WITH CLEARANCE ON ACCOUNT OF MULTI-OBJECTIVE OPTIMIZATION
Published 2019-01-01“…For high-speed CAM with clearance in the process of running with reduced stability and increasing noise and wear and so on and on the basis of the characteristics of structure dynamics and kinematics, a kind of high speed CAM mechanism with clearance based on kinematics and dynamics multiple targets was put forward for optimization design. …”
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1760
Kineto-static Analysis of Planetary Gear Train based on Vector Bond Graph Method
Published 2016-01-01“…For the problem of kineto- static analysis for planetary gear train,the corresponding vector bond graph procedure is proposed. Based on the kinematic constraint condition of planar compound revolute joint,the procedure for modeling planar compound revolute joint by more concise vector bond graph is described. …”
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