Log in

Relevant bibliographies by topics / 6DOF method / Journal articles

To see the other types of publications on this topic, follow the link: 6DOF method.

Journal articles on the topic '6DOF method'

Author: Grafiati

Published: 28 June 2021

Last updated: 11 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic '6DOF method.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Talley, Michael A., and Shahram Sarkani. "A New Simulation Method Providing Shock Mount Selection Assurance." Shock and Vibration 10, no. 4 (2003): 231–67. http://dx.doi.org/10.1155/2003/756142.

Full text

Abstract:

This paper presents the development and assessment of a practical and efficient process for assessing and/or designing shock isolation systems. This process combines practical methods for determining relative displacements and accelerations (e.g. shock response spectrum analysis) with a new, efficient, easy to use, 6 degree of freedom (6DOF) simulation method known as Shock Isolation Mount Predictions & Loading Estimates (SIMPLE). SIMPLE is also a tool that can easily account for uncertainties in isolated systems and their environments. The implementation of 6DOF rigid body theory in SIMPL

APA, Harvard, Vancouver, ISO, and other styles

2

Eppenga, Roeland, Koert Kuhlmann, Theo Ruers, and Jasper Nijkamp. "Accuracy assessment of target tracking using two 5-degrees-of-freedom wireless transponders." International Journal of Computer Assisted Radiology and Surgery 15, no. 2 (2019): 369–77. http://dx.doi.org/10.1007/s11548-019-02088-9.

Full text

Abstract:

Abstract Purpose Surgical navigation systems are generally only applied for targets in rigid areas. For non-rigid areas, real-time tumor tracking can be included to compensate for anatomical changes. The only clinically cleared system using a wireless electromagnetic tracking technique is the Calypso® System (Varian Medical Systems Inc., USA), designed for radiotherapy. It is limited to tracking maximally three wireless 5-degrees-of-freedom (DOF) transponders, all used for tumor tracking. For surgical navigation, a surgical tool has to be tracked as well. In this study, we evaluated whether ac

APA, Harvard, Vancouver, ISO, and other styles

3

Chen, Kai, Fuqiang Shen, Jun Zhou, and Xiaofeng Wu. "Simulation Platform for SINS/GPS Integrated Navigation System of Hypersonic Vehicles Based on Flight Mechanics." Sensors 20, no. 18 (2020): 5418. http://dx.doi.org/10.3390/s20185418.

Full text

Abstract:

In this study, a simulation platform for an integrated navigation algorithm for hypersonic vehicles based on flight mechanics is designed. In addition, the generation method of inertial measurement unit data and satellite receiver data is introduced. First, the interface relationship between a high-precision six-degree-of-freedom (6DoF) model and the simulation platform in the launch-centered Earth-fixed frame is introduced. Three-axis theoretical specific force and angular velocity are output by the 6DoF model. Accelerometer and gyroscope error models are added, and integral processing of the

APA, Harvard, Vancouver, ISO, and other styles

4

Wu, Yan, Li Hui Cheng, Guo Feng Fan, and Cai Dong Wang. "Inverse Kinematics Solution and Optimization of 6DOF Handling Robot." Applied Mechanics and Materials 635-637 (September 2014): 1355–59. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.1355.

Full text

Abstract:

The kinematics equation of the handling robot with six free degrees has multiple sets inverse solution, and the robot system only can choose one optimized solutions to drive the robot to work. The kinematics model of the robot is established by D-H method, and the inverse solution is derived by an algebraic method. The best flexibility principle was introduced to determine a set of optimal solutions from 8 sets of feasible solutions. The correctness of robot inverse solution method is verified through a set of calculation examples.

APA, Harvard, Vancouver, ISO, and other styles

5

AGUIAR, LILIANA, CARLOS ANDRADE, MARCO BRANCO, RITA SANTOS-ROCHA, FILOMENA VIEIRA, and ANTÓNIO VELOSO. "GLOBAL OPTIMIZATION METHOD APPLIED TO THE KINEMATICS OF GAIT IN PREGNANT WOMEN." Journal of Mechanics in Medicine and Biology 16, no. 06 (2016): 1650084. http://dx.doi.org/10.1142/s0219519416500846.

Full text

Abstract:

Morphological changes are associated to pregnancy, such as weight gain and increased volume of the trunk. The soft tissue artifact can also increase with these characteristics and affect the real joint kinematics. The main objective of this study was to understand the effect of using three different constraining sets in the lower limb joints, in the amount of soft tissue artifact (STA) of pregnant women, in order to obtain the most appropriated joint set to be used in gait and in this population. The ankle, knee and hip joints were modeled respectively with the following characteristics: (1) U

APA, Harvard, Vancouver, ISO, and other styles

6

Yu, Zhaolong, Yugao Shen, Jørgen Amdahl, and Marilena Greco. "Implementation of Linear Potential-Flow Theory in the 6DOF Coupled Simulation of Ship Collision and Grounding Accidents." Journal of Ship Research 60, no. 03 (2016): 119–14. http://dx.doi.org/10.5957/jsr.2016.60.3.119.

Full text

Abstract:

Ship collisions and groundings are highly nonlinear and transient, coupled dynamic processes involving large structural deformations and fluid structure interactions. It has long been difficult to include all effects in one simulation. By taking advantage of the user-defined load subroutine and the user common variable, this article implements a model of hydrodynamic loads based on linear potential-flow theory into the nonlinear finite element code LS-DYNA, facilitating a fully coupled six degrees of freedom (6DOF) dynamic simulation of ship collision and grounding accidents. Potential-flow th

APA, Harvard, Vancouver, ISO, and other styles

7

Xi, Ke, and Chao Yan. "CFD Transonic Trajectory Predictions of Three-Store Ripple Release Using Chimera Method." Applied Mechanics and Materials 513-517 (February 2014): 4490–93. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.4490.

Full text

Abstract:

The complicated unsteady flows with moving boundary were simulated numerically by coupling solving unsteady compressible Navier-Stokes equations and 6DOF rigid-body dynamics equations. The Chimera grid technology was used to handle the relative motion. The three-store ripple release of the wing-store configuration was simulated using this method. The computational results are in good agreement with data from other literature, showing that the method used has a strong applicability to complex multi-body separation problem.

APA, Harvard, Vancouver, ISO, and other styles

8

Gaeid, Khalaf S., Asaad F. Nashee, Ibrahim A. Ahmed, and Mohammed H. Dekheel. "Robot control and kinematic analysis with 6DoF manipulator using direct kinematic method." Bulletin of Electrical Engineering and Informatics 10, no. 1 (2021): 70–78. http://dx.doi.org/10.11591/eei.v10i1.2482.

Full text

Abstract:

The robots pay important role in all parts of our life. Hence, the modeling of the robot is essential to develop the performance specification. Robot model of six degree of freedom (6DoF) manipulator implemented numerically using model-based technique. The kinematic analysis and simulation were studied with Inverse kinematics of the robot manipulator through Denevit and Hartenberg method. Matrix transformation method is used in this work in order to separate joint variables from kinematic equations. The finding of the desired configuration is obtained precisely in all motion trajectory along t

APA, Harvard, Vancouver, ISO, and other styles

9

Jiang, Yifan, Xiang Huang, and Shuanggao Li. "An on-line compensation method of a metrology-integrated robot system for high-precision assembly." Industrial Robot: An International Journal 43, no. 6 (2016): 647–56. http://dx.doi.org/10.1108/ir-03-2016-0091.

Full text

Abstract:

Purpose The purpose of this paper is to propose an on-line iterative compensation method combining with a feed-forward compensation method to enhance the assembly accuracy of a metrology-integrated robot system (MIRS). Design/methodology/approach By the integration of a six degrees of freedom (6DoF) measurement system (T-Mac), the robot’ movement can be tracked with real-time measurement. With the on-line measured data, the proposed iterative compensation for absolute positioning and the feed-forward compensation for relative linear motion are integrated into the assembly process to improve th

APA, Harvard, Vancouver, ISO, and other styles

10

Elango, P., and R. Mohan. "Trajectory optimisation of six degree of freedom aircraft using differential flatness." Aeronautical Journal 122, no. 1257 (2018): 1788–810. http://dx.doi.org/10.1017/aer.2018.99.

Full text

Abstract:

ABSTRACTThe flatness of a six-degree-of-freedom (6DoF) aircraft model with conventional control surfaces – aileron, flap, rudder and elevator, along with thrust vectoring ability is established in this work. Trajectory optimisation of an aircraft can be cast as an inverse problem where the solution for control inputs that yield desired trajectories for certain states is sought. The solution to the inverse problems for certain systems is made tractable when they exhibit differential flatness. Flatness-based trajectory optimisation has a significant advantage over an equivalent collocation-based

APA, Harvard, Vancouver, ISO, and other styles

11

Zheng, Yan, Zhicheng Zhou, and Hai Huang. "A multi-frequency MIMO control method for the 6DOF micro-vibration exciting system." Acta Astronautica 170 (May 2020): 552–69. http://dx.doi.org/10.1016/j.actaastro.2020.02.033.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Viejo, Diego, and Miguel Cazorla. "A robust and fast method for 6DoF motion estimation from generalized 3D data." Autonomous Robots 36, no. 4 (2013): 295–308. http://dx.doi.org/10.1007/s10514-013-9354-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Li, Shutong, Ahmad Ghasemi, Wenfang Xie, and Yanbin Gao. "An Enhanced IBVS Controller of a 6DOF Manipulator Using Hybrid PD-SMC Method." International Journal of Control, Automation and Systems 16, no. 2 (2018): 844–55. http://dx.doi.org/10.1007/s12555-016-0720-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Wu, Tiecheng, Wanzhen Luo, Dapeng Jiang, Rui Deng, and Shuo Huang. "Numerical Study on Wave-Ice Interaction in the Marginal Ice Zone." Journal of Marine Science and Engineering 9, no. 1 (2020): 4. http://dx.doi.org/10.3390/jmse9010004.

Full text

Abstract:

The effect of waves on ice sheet is critical in the marginal ice zone (MIZ). Waves break large sea ice into small pieces and cause them to collide with each other. Simultaneously, the interaction between sea ice and waves attenuates these waves. In this study, a numerical research is conducted based on a computational fluid dynamics (CFD) method to investigate the response of single ice floe to wave action. The obtained results demonstrate that the sea ice has a violent six degree of freedom (6DoF) motion in waves. Ice floes with different sizes, thicknesses, and shapes exhibit different 6DoF

APA, Harvard, Vancouver, ISO, and other styles

15

Jensen, Mathias Laustsen, Rasoul Mahshid, Greta D’Angelo, et al. "Toolpath Strategies for 5DOF and 6DOF Extrusion-Based Additive Manufacturing." Applied Sciences 9, no. 19 (2019): 4168. http://dx.doi.org/10.3390/app9194168.

Full text

Abstract:

This paper introduces two new deposition-strategies for five degrees of freedom (5DOF) and 6DOF extrusion-based additive manufacturing (AM), called the tool path projection- and parent-child-approach, respectively. The tool path projection method can be automated, and allows for the generation of concentric shells layers, which remedy geometrical deviations (known as the stair-case effect) that are typically seen in 3DOF AM processes that potentially require secondary post treatment by machining or grinding of the final part. In the parent-child approach, the designer specifies the manufacturi

APA, Harvard, Vancouver, ISO, and other styles

16

Kamata, Ryoya, Ryosuke Tamura, Satoshi Niitsu, Hiroshi Kawaharada, and Hiroyuki Hiraoka. "Use of 1DOF Haptic Device for Remote-Controlled 6DOF Assembly." International Journal of Automation Technology 8, no. 3 (2014): 452–59. http://dx.doi.org/10.20965/ijat.2014.p0452.

Full text

Abstract:

This paper describes a remote controlled assembly using a haptic device. Most haptic devices have six Degrees Of Freedom (DOFs) for a higher sense of reality. However, for assembly operation, the simultaneous motion of parts with only one or two DOFs is required, and force feedback to operators is used only to maintain contact and detect collisions among parts. This leads to the possibility of assembly operations using a haptic device with a small number of DOFs. In this paper, we propose virtual planes to perform remote control of a 6DOF assembly by way of 1DOF user operations. Virtual planes

APA, Harvard, Vancouver, ISO, and other styles

17

Zeng, Ji Guo, Jing Yu Liu, and Qiang Yu. "Design and Development of 6DOF Hydraulic Motion Platform for Vehicle Driving Simulator." Applied Mechanics and Materials 505-506 (January 2014): 315–18. http://dx.doi.org/10.4028/www.scientific.net/amm.505-506.315.

Full text

Abstract:

The high-level driving simulators generally involve motion platform. This paper describes the design and development of a 6DOF hydraulic motion platform for vehicle driving simulator. Firstly, the structure and kinematic model of the platform are introduced. Then, the speed characteristics of the hydraulic cylinders by using different positive and negative voltage are studied. Because the cylinder startup time and hydraulic pump pressure will both affect the platform's final position, so a real-time platform control method according the sensor feedback is described. Finally, commonly used cont

APA, Harvard, Vancouver, ISO, and other styles

18

Hussnain, Z., S. Oude Elberink, and G. Vosselman. "AN AUTOMATIC PROCEDURE FOR MOBILE LASER SCANNING PLATFORM 6DOF TRAJECTORY ADJUSTMENT." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-1 (September 26, 2018): 203–9. http://dx.doi.org/10.5194/isprs-archives-xlii-1-203-2018.

Full text

Abstract:

<p><strong>Abstract.</strong> In this paper, a method is presented to improve the MLS platform’s trajectory for GNSS denied areas. The method comprises two major steps. The first step is based on a 2D image registration technique described in our previous publication. Internally, this registration technique first performs aerial to aerial image matching, this issues correspondences which enable to compute the 3D tie points by multiview triangulation. Similarly, it registers the rasterized Mobile Laser Scanning Point Cloud (MLSPC) patches with the multiple related aerial image

APA, Harvard, Vancouver, ISO, and other styles

19

Jouir, Tasarinan, Reuben Strydom, Thomas M. Stace, and Mandyam V. Srinivasan. "Vision-only egomotion estimation in 6DOF using a sky compass." Robotica 36, no. 10 (2018): 1571–89. http://dx.doi.org/10.1017/s0263574718000577.

Full text

Abstract:

SUMMARYA novel pure-vision egomotion estimation algorithm is presented, with extensions to Unmanned Aerial Systems (UAS) navigation through visual odometry. Our proposed method computes egomotion in two stages using panoramic images segmented into sky and ground regions. Rotations (in 3DOF) are estimated by using a customised algorithm to measure the motion of the sky image, which is affected only by the rotation of the aircraft, and not by its translation. The rotation estimate is then used to derotate the optic flow field generated by the ground, from which the translation of the aircraft (i

APA, Harvard, Vancouver, ISO, and other styles

20

Puomio, Otto, Nils Meyer-Kahlen, and Tapio Lokki. "Locating Image Sources from Multiple Spatial Room Impulse Responses." Applied Sciences 11, no. 6 (2021): 2485. http://dx.doi.org/10.3390/app11062485.

Full text

Abstract:

Measured spatial room impulse responses have been used to compare acoustic spaces. One way to analyze and render such responses is to apply parametric methods, yet those methods have been bound to single measurement locations. This paper introduces a method that locates image sources from spatial room impulse responses measured at multiple source and receiver positions. The method aligns the measurements to a common coordinate frame and groups stable direction-of-arrival estimates to find image source positions. The performance of the method is validated with three case studies—one small room

APA, Harvard, Vancouver, ISO, and other styles

21

Nguyen, Van-Tu, Duc-Thanh Vu, Warn-Gyu Park, and Chul-Min Jung. "Navier–Stokes solver for water entry bodies with moving Chimera grid method in 6DOF motions." Computers & Fluids 140 (November 2016): 19–38. http://dx.doi.org/10.1016/j.compfluid.2016.09.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Montagud, Mario, Cristian Hurtado, Juan Antonio De Rus, and Sergi Fernández. "Subtitling 3D VR Content with Limited 6DoF: Presentation Modes and Guiding Methods." Applied Sciences 11, no. 16 (2021): 7472. http://dx.doi.org/10.3390/app11167472.

Full text

Abstract:

All multimedia services must be accessible. Accessibility for multimedia content is typically provided by means of access services, of which subtitling is likely the most widespread approach. To date, numerous recommendations and solutions for subtitling classical 2D audiovisual services have been proposed. Similarly, recent efforts have been devoted to devising adequate subtitling solutions for VR360 video content. This paper, for the first time, extends the existing approaches to address the challenges remaining for efficiently subtitling 3D Virtual Reality (VR) content by exploring two key

APA, Harvard, Vancouver, ISO, and other styles

23

Farah, Edris, and Shao Gang Liu. "3D Modeling and Closed-Form Inverse Kinematics Solution for 6dof Surgical Robot." Applied Mechanics and Materials 455 (November 2013): 533–38. http://dx.doi.org/10.4028/www.scientific.net/amm.455.533.

Full text

Abstract:

Since robots began to inter the medical fields, more research efforts and more attention have been given to this kind of robots. In this paper six degrees of freedom surgical robot was studied. The Denavit-Hartenberg parameters of the robot have been computed and 3D model has been built by using open source robotics toolbox. The paper also discussed a closed form solution for the inverse kinematics problem by using inverse kinematic decoupling method.

APA, Harvard, Vancouver, ISO, and other styles

24

Li, Wei, Xiao Liang, Jianguo Lin, et al. "Numerical Simulation of Ship Oil Spill in Arctic Icy Waters." Applied Sciences 10, no. 4 (2020): 1394. http://dx.doi.org/10.3390/app10041394.

Full text

Abstract:

This paper presents a three-dimensional numerical simulation model of an oil spill for application in emergency treatment methods under icy water conditions. The combined effects of wind, wave, current and ice implemented in our model correspond to Arctic Ocean conditions. A discrete element method combined with an overset grid was adopted to track the trajectory movements of oil film with medium-density ice floes and simulate the flow field of moving ice of large displacement in six degrees of freedom (6DOF). The probability of oil spill area extensions were estimated by a response surface me

APA, Harvard, Vancouver, ISO, and other styles

25

Liu, Qiang, Yu Han, Min Hao Liu, and Shang Fei Tian. "Implementation of Dynamic Simulation System on Six DOF Industrial Robot." Applied Mechanics and Materials 373-375 (August 2013): 206–12. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.206.

Full text

Abstract:

A dynamic simulation system whose model objects were industrial robot was designed. An advanced and quickly inverse kinematic algorithm was used to solve inverse kinematic equation for 6DOF industrial robot, the time of solve was improved. The method of trajectory planning was developed. The vision simulation for industrial robot was completed by Creator and Vega software. Simulation result shows that the requirement of kinematic control has been achieved and provides an intuitive and convenient tool for research of the kinematic control algorithm for industrial robot.

APA, Harvard, Vancouver, ISO, and other styles

26

Zheng, Feng, Zhang, and Li. "A Method for Simultaneously Measuring 6DOF Geometric Motion Errors of Linear and Rotary Axes Using Lasers." Sensors 19, no. 8 (2019): 1764. http://dx.doi.org/10.3390/s19081764.

Full text

Abstract:

A novel method for simultaneously directly measuring six-degrees-of-freedom (6DOF) geometric motion errors of CNC machine tools was proposed, and a corresponding measurement system was developed. This method can not only be applied for measuring a linear axis, but also for a rotary axis. A single-mode fiber was used to separate the measuring unit from the laser source in order to ensure system thermal stability and measurement accuracy. The method has the advantages of high efficiency and good accuracy, and requires no complicated decoupling calculation. The positioning error of the linear axi

APA, Harvard, Vancouver, ISO, and other styles

27

Hsu, Cheng-Hsing, Jun-Liang Chen, Shan-Chi Yuan, and Kuang-Yuan Kung. "CFD Simulations on the Rotor Dynamics of a Horizontal Axis Wind Turbine Activated from Stationary." Applied Mechanics 2, no. 1 (2021): 147–58. http://dx.doi.org/10.3390/applmech2010009.

Full text

Abstract:

The adaptive dynamic mesh, user-defined functions, and six degrees of freedom (6DOF) solver provided in ANSYS FLUENT 14 are engaged to simulate the activating processes of the rotor of the Grumman WS33 wind system. The rotor is activated from stationary to steady operation driven by a steady or periodic wind flow and its kinematic properties and power generation during the activating processes. The angular velocity and angular acceleration are calculated directly by the post-processed real-time 6DOF solver without presuming a known rotating speed to the computational grid frame. The maximum an

APA, Harvard, Vancouver, ISO, and other styles

28

Xu, Lai Bin. "Longitudinal Dynamics Response of M-Wing Morphing Aircraft." Advanced Materials Research 538-541 (June 2012): 2627–30. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.2627.

Full text

Abstract:

A simulation methodology suitable for morphing wing aircraft is presented, accounting for the changes in both inertial and aerodynamic properties. The aerodynamics was generated with vortex lattice method and solved concurrently with 6DOF nonlinear extended equations of motion. Due to the wing morphing, there are 4 additional forces and moments exhibiting in the extended equations of motion. The simulation mythology was applied to M-wing morphing aircraft, and the longitudinal dynamic response was analyzed with the wing morphing symmetrically. The results show that the additional forces and mo

APA, Harvard, Vancouver, ISO, and other styles

29

Yue, Jin, Guang Ren, Xiao Liang, Xiao Wei Qi, and Geng Tian Li. "Motion Modeling and Simulation of High-Speed Unmanned Surface Vehicle." Applied Mechanics and Materials 44-47 (December 2010): 1588–92. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.1588.

Full text

Abstract:

According to the motion characteristic and the hydrodynamics of high-speed deep-V planings, forces and moments acted on a deep-V planing propelled by a contra-rotating propeller were analyzed, and on the basis of MMG modeling method, a real-time 6DOF mathematical motion model for the high-speed unmanned surface vehicle(USV) was built and the performance was simulated using the Matlab/Simulink software tool. Compared with the actual sea trial data, the results show that the proposed model can better reflect and simulate the maneuverability of the USV under ocean environment.

APA, Harvard, Vancouver, ISO, and other styles

30

Ricardo, Diogo, Júlia Teles, Maria Raquel Raposo, António Prieto Veloso, and Filipa João. "Test-Retest Reliability of a 6DoF Marker Set for Gait Analysis in Cerebral Palsy Children." Applied Sciences 11, no. 14 (2021): 6515. http://dx.doi.org/10.3390/app11146515.

Full text

Abstract:

Background: Cerebral palsy (CP) is a complex pathology that describes a group of motor disorders with different presentations and functional levels. Three-dimensional gait analysis is widely used in the assessment of CP children to assist in clinical decision making. Thus, it is crucial to assess the repeatability of gait measurements to evaluate the progress of the rehabilitation process. The purpose of the study is to evaluate test-retest reliability of a six-degree-of-freedom (6DoF) marker set in key points of gait kinematics, kinetics, and time-distance parameters in children with CP. Meth

APA, Harvard, Vancouver, ISO, and other styles

31

Sun, Lu, Hussein Al Osman, and Jochen Lang. "An Augmented Reality Online Assistance Platform for Repair Tasks." ACM Transactions on Multimedia Computing, Communications, and Applications 17, no. 2 (2021): 1–23. http://dx.doi.org/10.1145/3429285.

Full text

Abstract:

Our augmented reality online assistance platform enables an expert to specify 6DoF movements of a component and apply the geometrical and physical constraints in real-time. We track the real components on the expert’s side to monitor the operations of an expert. We leverage a remote rendering technique that we proposed previously to relieve the rendering burden of the augmented reality end devices. By conducting a user study, we show that the proposed method outperforms conventional instructional videos and sketches. The answers to the questionnaires show that the proposed method receives high

APA, Harvard, Vancouver, ISO, and other styles

32

Bao Nghi, Le Luong, and Bui Cong Thanh. "A 6DOF super element for nonlinear analysis of composite frames with partial interaction and semi-rigid connections." Vietnam Journal of Mechanics 33, no. 1 (2011): 13–26. http://dx.doi.org/10.15625/0866-7136/33/1/35.

Full text

Abstract:

This paper presents a displacement-based finite element formulation for nonlinear analysis of steel - concrete composite planar frames subjected to combined action of gravity and lateral loads. A 6DOF super element is proposed for modeling composite beam, allowing for partial interaction between the steel beam and the concrete slab, semi-rigid nature of beam to column composite connection and material nonlinearity. The load control method and the displacement control method are utilized for tracing the structural equilibrium paths, and the direct method is utilized for solving the nonlinear pr

APA, Harvard, Vancouver, ISO, and other styles

33

Zhang, Wen-Qing, Liang-Long Da, De-Yan Tian, Qin-Dong Sun, Wen-Long Wang, and Wen-Jing Chen. "Research on Anti-Interference Nonlinear Adaptive Control Method for Autonomous Underwater Gliders." Mathematical Problems in Engineering 2021 (August 9, 2021): 1–10. http://dx.doi.org/10.1155/2021/9998061.

Full text

Abstract:

In this paper, the characteristics of underactuation are analyzed according to the working principle of underwater glider, a complete 6DOF model of underwater glider is established, and the error equation of 3D path tracking is given. Based on the line-of-sight navigation method in three-dimensional space, the nonlinear adaptive control strategy is designed, and the roll angle control law, pitch angle control law, and depth control law of underwater glider are given. The tracking error of underwater glider is proved to be convergent by Lyapunov stability theorem. Finally, the results of marine

APA, Harvard, Vancouver, ISO, and other styles

34

Ortega, Mario, Eugenio Ivorra, Alejandro Juan, Pablo Venegas, Jorge Martínez, and Mariano Alcañiz. "MANTRA: An Effective System Based on Augmented Reality and Infrared Thermography for Industrial Maintenance." Applied Sciences 11, no. 1 (2021): 385. http://dx.doi.org/10.3390/app11010385.

Full text

Abstract:

In recent years, the benefits of both Augmented Reality (AR) technology and infrared thermography (IRT) have been demonstrated in the industrial maintenance sector, allowing maintenance operations to be carried out in a safer, faster, and more efficient manner. However, there still exists no solution that optimally combines both technologies. In this work, we propose a new AR system—MANTRA—with specific application to industrial maintenance. The system can automatically align virtual information and temperature on any 3D object, in real time. This is achieved through the joint use of an RGB-D

APA, Harvard, Vancouver, ISO, and other styles

35

Jin, Lei, Xiaojuan Wang, Mingshu He, and Jingyue Wang. "DRNet: A Depth-Based Regression Network for 6D Object Pose Estimation." Sensors 21, no. 5 (2021): 1692. http://dx.doi.org/10.3390/s21051692.

Full text

Abstract:

This paper focuses on 6Dof object pose estimation from a single RGB image. We tackle this challenging problem with a two-stage optimization framework. More specifically, we first introduce a translation estimation module to provide an initial translation based on an estimated depth map. Then, a pose regression module combines the ROI (Region of Interest) and the original image to predict the rotation and refine the translation. Compared with previous end-to-end methods that directly predict rotations and translations, our method can utilize depth information as weak guidance and significantly

APA, Harvard, Vancouver, ISO, and other styles

36

Hachiuma, Ryo, and Hideo Saito. "Pose Estimation of Primitive-Shaped Objects from a Depth Image Using Superquadric Representation." Applied Sciences 10, no. 16 (2020): 5442. http://dx.doi.org/10.3390/app10165442.

Full text

Abstract:

This paper presents a method for estimating the six Degrees of Freedom (6DoF) pose of texture-less primitive-shaped objects from depth images. As the conventional methods for object pose estimation require rich texture or geometric features to the target objects, these methods are not suitable for texture-less and geometrically simple shaped objects. In order to estimate the pose of the primitive-shaped object, the parameters that represent primitive shapes are estimated. However, these methods explicitly limit the number of types of primitive shapes that can be estimated. We employ superquadr

APA, Harvard, Vancouver, ISO, and other styles

37

Kratochví, Aleš. "A new approach of creating a finite element stick model for flutter analysis." MATEC Web of Conferences 304 (2019): 01015. http://dx.doi.org/10.1051/matecconf/201930401015.

Full text

Abstract:

The article describes a new approach of creating a finite element stick model for the purpose of the aircraft flutter analysis. The control surface properties are merged with a lifting surface element as a special degree of freedom (DOF). The number of DOF for the coordination system is increased from the classical 6DOF to 9DOF. A new beam element and concentrated mass element are present for the purpose of modal and flutter analysis. The advantage of this method lies in reducing the number of model nodes and introduction of a more appropriate arrangement of global mass matrix for eigen-value

APA, Harvard, Vancouver, ISO, and other styles

38

SAJKOWSKI, Maciej. "Control system design using rapid prototyping method on the examples of voice controlled mobile robot and 6dof parallel manipulator." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 6 (2015): 117–21. http://dx.doi.org/10.15199/48.2015.06.23.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Wang, Xiao, Ming Wu, and Rong Rong Ying. "Numerical Calculation of Hydrodynamic Interference Coefficients between Hull, Rudder and Propeller." Advanced Materials Research 591-593 (November 2012): 1949–53. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.1949.

Full text

Abstract:

CFD developed rapidly in capability and practicality during past years. A lot of research works on numerical simulation of viscous flow field around ship were widely carried out in past decades. But the research of interference effect among the hull, rudder and propeller was rarely concerned. In this paper, based on an unsteady Reynolds Averaged Navier–Stokes method, the dynamic mesh methods(6DOF) are adopted to simulate straight line and oblique towing test of ship with twin propellers and twin rudders. And based on the simulation results, the interference coefficients, such as effective weak

APA, Harvard, Vancouver, ISO, and other styles

40

Yang, Wenjun, Xiaojun Liu, Xiaoting Guo, Wenlong Lu, Zhenjian Yao, and Zili Lei. "A method for simultaneously measuring 6DOF geometric motion errors of a precision rotary stage based on absolute position-distance measurement." Optics and Lasers in Engineering 138 (March 2021): 106420. http://dx.doi.org/10.1016/j.optlaseng.2020.106420.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Deilamsalehy, Hanieh, and Timothy C. Havens. "Fuzzy adaptive extended Kalman filter for robot 3D pose estimation." International Journal of Intelligent Unmanned Systems 6, no. 2 (2018): 50–68. http://dx.doi.org/10.1108/ijius-12-2017-0014.

Full text

Abstract:

Purpose Estimating the pose – position and orientation – of a moving object such as a robot is a necessary task for many applications, e.g., robot navigation control, environment mapping, and medical applications such as robotic surgery. The purpose of this paper is to introduce a novel method to fuse the information from several available sensors in order to improve the estimated pose from any individual sensor and calculate a more accurate pose for the moving platform. Design/methodology/approach Pose estimation is usually done by collecting the data obtained from several sensors mounted on

APA, Harvard, Vancouver, ISO, and other styles

42

Okawa, Marina, Takafumi Taketomi, Goshiro Yamamoto, et al. "A model-based tracking framework for textureless 3D rigid curved objects." Journal on Interactive Systems 3, no. 2 (2013): 1. http://dx.doi.org/10.5753/jis.2012.611.

Full text

Abstract:

This paper addresses the problem of tracking texturelessrigid curved objects. A common approach uses polygonalmeshes to represent curved objects inside an edge-based trackingsystem. However, in order to accurately recover their shape,high quality meshes are required, creating a trade-off betweencomputational efficiency and tracking accuracy. To solve thisissue, we suggest the use of quadrics calculated for each patchin the mesh to give local approximations of the object contour.This representation reduces considerably the level of detail of thepolygonal mesh while maintaining tracking accuracy

APA, Harvard, Vancouver, ISO, and other styles

43

Eryılmaz, Cenk, and V. E. Omurlu. "SQP Optimization of 6dof 3x3 UPU Parallel Robotic System for Singularity Free and Maximized Reachable Workspace." Journal of Robotics 2019 (February 3, 2019): 1–14. http://dx.doi.org/10.1155/2019/3928705.

Full text

Abstract:

The determination of kinematic parameters for a parallel robotic system (PRS) is an important and a critical phase to maximize reachable workspace while avoiding singular configurations. Stewart Platform (SP) mechanism is one of the widely known PRS and it is used to demonstrate the proposed technique. In the related literature, GCI (Global Condition Index) and LCI (Local Condition Index) are the commonly used performance indexes which give a measure about the dexterity of a mechanism. In this work, Sequential Quadratic Programming (SQP) method is used to optimize kinematic parameters of a 6do

APA, Harvard, Vancouver, ISO, and other styles

44

Sargeant, B., S. Robson, E. Szigeti, P. Richardson, A. El-Nounu, and M. Rafla. "A METHOD TO ACHIEVE LARGE VOLUME, HIGH ACCURACY PHOTOGRAMMETRIC MEASUREMENTS THROUGH THE USE OF AN ACTIVELY DEFORMABLE SENSOR MOUNTING PLATFORM." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B5 (June 15, 2016): 123–29. http://dx.doi.org/10.5194/isprsarchives-xli-b5-123-2016.

Full text

Abstract:

When using any optical measurement system one important factor to consider is the placement of the sensors in relation to the workpiece being measured. When making decisions on sensor placement compromises are necessary in selecting the best placement based on the shape and size of the object of interest and the desired resolution and accuracy. One such compromise is in the distance the sensors are placed from the measurement surface, where a smaller distance gives a higher spatial resolution and local accuracy and a greater distance reduces the number of measurements necessary to cover a larg

APA, Harvard, Vancouver, ISO, and other styles

45

Sargeant, B., S. Robson, E. Szigeti, P. Richardson, A. El-Nounu, and M. Rafla. "A METHOD TO ACHIEVE LARGE VOLUME, HIGH ACCURACY PHOTOGRAMMETRIC MEASUREMENTS THROUGH THE USE OF AN ACTIVELY DEFORMABLE SENSOR MOUNTING PLATFORM." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B5 (June 15, 2016): 123–29. http://dx.doi.org/10.5194/isprs-archives-xli-b5-123-2016.

Full text

Abstract:

When using any optical measurement system one important factor to consider is the placement of the sensors in relation to the workpiece being measured. When making decisions on sensor placement compromises are necessary in selecting the best placement based on the shape and size of the object of interest and the desired resolution and accuracy. One such compromise is in the distance the sensors are placed from the measurement surface, where a smaller distance gives a higher spatial resolution and local accuracy and a greater distance reduces the number of measurements necessary to cover a larg

APA, Harvard, Vancouver, ISO, and other styles

46

Liu, Jingshu, and Yuan Li. "Visual Servoing with Deep Learning and Data Augmentation for Robotic Manipulation." Journal of Advanced Computational Intelligence and Intelligent Informatics 24, no. 7 (2020): 953–62. http://dx.doi.org/10.20965/jaciii.2020.p0953.

Full text

Abstract:

We propose a visual servoing (VS) approach with deep learning to perform precise, robust, and real-time six degrees of freedom (6DOF) control of robotic manipulation to ease the extraction of image features and estimate the nonlinear relationship between the two-dimensional image space and the three-dimensional Cartesian space in traditional VS tasks. Owing to the superior learning capabilities of convolutional neural networks (CNNs), autonomous learning to select and extract image features from images and fitting the nonlinear mapping is achieved. A method for designing and generating a datas

APA, Harvard, Vancouver, ISO, and other styles

47

An, Tong, JianHua Wang, YuLong Pan, and HaiShan Chen. "A Low-Order Partial Integrated Guidance and Control Scheme for Diving Hypersonic Vehicles to Impact Ground Maneuver Target." Mathematical Problems in Engineering 2021 (September 7, 2021): 1–12. http://dx.doi.org/10.1155/2021/7407739.

Full text

Abstract:

In this article, a low-order partial integrated guidance and control (PIGC) design method is proposed for diving hypersonic vehicles to impact ground maneuver target. A three-channel analytical model of body rates is deduced based on acceleration components of the hypersonic vehicle. By combining the analytical model of body rates and relative dynamic model between the hypersonic vehicle and target, three-channel commands of body rates are directly generated based on the extended state observer (ESO) technique, sliding mode control approach, and dynamic surface control theory in the guidance s

APA, Harvard, Vancouver, ISO, and other styles

48

San, Yam Ke, Gordon Chiew, Chin Howe, Vincent Chieng Chen Lee, and Sukanta Roy. "Analysis on Rolling Damping of a Conventional Boat fitted with T-shaped Bilge Keels." MATEC Web of Conferences 202 (2018): 02007. http://dx.doi.org/10.1051/matecconf/201820202007.

Full text

Abstract:

This work presents a numerical study on the effect of T-shaped bilge keels on the roll damping of a conventional boat. A scaled boat model with the same dimensions as that of Irkal et al. [2] was fitted with two T-shaped bilge keels at the edges of the model. Computational Fluid Dynamics method was employed to simulate the roll decay motion of the boat. The motion of the boat is captured using a 6DOF model and the Overset grid approach. Comparison was performed on the damping characteristics of the conventional I-shaped and the T-shaped bilge keels. In addition, the impact of the aspect ratio

APA, Harvard, Vancouver, ISO, and other styles

49

ANDO, Takashi. "Obtaining the center of gravity, inertia parameters and finite element approximation models of electromagnetic nonlinearity on 6DOF magnetic levitation system by adaptive control method." Transactions of the JSME (in Japanese) 81, no. 824 (2015): 14–00496. http://dx.doi.org/10.1299/transjsme.14-00496.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Lu, Yun, Jinbo Wu, Weijia Li, and Yaozhong Wu. "A New Six-DoF Parallel Mechanism for Captive Model Test." Polish Maritime Research 27, no. 3 (2020): 4–15. http://dx.doi.org/10.2478/pomr-2020-0041.

Full text

Abstract:

AbstractIn order to obtain the hydrodynamic coefficients that can save cost and meet the accuracy requirements, a new hydrodynamic test platform based on a 6DoF (six degrees of freedom) parallel mechanism is proposed in this paper. The test platform can drive the ship to move in six degrees of freedom. By using this experimental platform, the corresponding hydrodynamic coefficients can be measured. Firstly, the structure of the new device is introduced. The working principle of the model is deduced based on the mathematical model. Then the hydrodynamic coefficients of a test ship model of a KE

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!