Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 80 for “"Kinematic Model"”.
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A kinematic model to study the distribution of precipitation in a cumulus updraft.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1973.
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Development of the kinematic model for an ultrasound scanning machine by means of dual quaternion transformations of screw coordinates
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1989.
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A wearable system that learns a kinematic model and finds structure in everyday manipulation by using absolute orientation sensors and a camera
… first wearable system to autonomously learn a kinematic model of the wearer via body-mounted absolute orientation sensors and a head-mounted camera. With Duo, we demonstrate the significant benefits of endowing a wearable system with the ability to sense the kinematic configuration of the …
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Kinematic Analysis Of A Two Body Articulated Robotic Vehicle
The kinematic analysis of an articulated twin body, four-wheel, robotic vehicle is presented. Polaris, a research platform and contending robotic vehicle in the Intelligent Ground Vehicle Competition (IGVC) at Virginia Tech, was redesigned in 2006 to improve the mobility of the vehicle by …
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A comparison of kinematic and dynamic schemes for calculating long-range atmospheric trajectories
Two numerical models, one kinematic and one dynamic, were created and compared in their ability to predict trajectories of atmospheric parcels over eight days. While kinematic models are more widely used due to their accuracy, dynamic models can be used pedagogically to visualize the balance of …
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Neural network modeling of the dynamics of autonomous underwater vehicles for Kalman filtering and improved localization
… location with respect to a reference point. The kinematic Extended Kalman filters have been used in localization in a method known as dead reckoning. The accuracy of the localization systems can be improved if a dynamic model is used instead of the kinematic model. The previously derived dynamic …
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Recovery of 3D articulated motion from 2D correspondences
… on recovery of 3D motion of an articulated model using 2D correspondences from an existing 2D tracker. A number of constraints are used to aid in reconstruction: (i) kinematic constraints from a 3D kinematic model, (ii) joint angle limits, (iii) dynamic smoothing, and (iv) key frames. These …
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Development of a Next-generation Experimental Robotic Vehicle (NERV) that Supports Intelligent and Autonomous Systems Research
… structured terrain. To this end, a theoretical kinematic model is presented for a novel two-body multi degree-of-freedom, four-wheel drive, small UGV platform. The efficacy of the theoretical kinematic model was validated through computer simulation and experimentation on a full-scale …
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A Mixed Eulerian-Lagrangian Model for the Analysis of Dynamic Fracture (Finite Element Method, Moving Mesh, Virtual Energy Release Rate)
… problems based on a mixed Eulerian-Lagrangian kinematic model. Effective finite element computational methods based on the continuum formulations are also described.
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Target Tracking in Multi-Static Active Sonar Systems Using Dynamic Programming and Hough Transform
… and particle filter) require a predetermined kinematic model of the target. Moreover, tracking an unknown and changing number of targets within a certain search area requires complex mathematical association filters to identify the number of targets and associate measurements to different …
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Feedback Control for a Path Following Robotic Car
… Institute (VTTI). The FLASH lab and the scale model cars contained therein provide a testbed for the small scale development stage of intelligent transportation systems (ITS). In addition, the FLASH lab serves as a home to the prototype display being developed for an educational museum exhibit. …
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Comparison of Modern Controls and Reinforcement Learning for Robust Control of Autonomously Backing Up Tractor-Trailers to Loading Docks
… (LQR) rely heavily on having an accurate model of the plant. However, real-world applications cannot expect to have an updated model for each new trailer. Finding alternative robust controllers when the trailer model is changed was the motivation of this research.</p> <p>Reinforcement …
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Design and construction of a double-octahedral variable geometry truss manipulator
… research projects. In this thesis, a kinematic model is formulated, and the forward and inverse kinematic problems are solved. Issues of motor and instrumentation choices are addressed. Dimensional choices and the important problems of joint design are examined. A computer simulation …
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Contribución al seguimiento de móviles con cabezas robóticas y visión artificial
… el estudio de tres problemas: construcción de un modelo cinemático de seguimiento para un sistema de visión monocular, sistema de identificación y predicción de la dinámica no-lineal del móvil, y, finalmente, algoritmo de segmentación de imágenes en movimiento. La construcción de un modelo …
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An Eulerian-Lagrangian finite element method for modeling crack growth in creeping materials
… The mixed Eulerian-Lagrangian description (ELD) kinematic model is shown to have several desirable properties for modeling inelastic crack growth. Accordingly, a variational statement based on the ELD for history-dependent materials is developed and a new moving-grid finite element method based …
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Kinematic Calibration of Parallel Kinematic Machines on the Example of the Hexapod of Simple Design
The aim of using parallel kinematic motion systems as an alternative of conventional machine tools for precision machining has raised the demands made on the accuracy of identification of the geometric parameters that are necessary for the kinematic transformation of the motion variables. The …
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Automatic Segmentation of Pressure Images Acquired in a Clinical Setting
… lateral, supine, and right lateral). An applied kinematic model estimated the overall pose of the patient. The algorithm accuracy depended on the body site, with the sacrum, left trochanter, and right trochanter achieving an accuracy of 87-93%. This project reliably segments pressure images into …
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Reconstruction of 3-D structural dynamic response fields: an experimental, laser-based approach with statistical emphasis
… formulation of a deterministic laser-structure kinematic model, and regression models that afford statistical inference for the time-domain and spatial-domain structural dynamics, as well as for the projection recombination process.
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Mission planning and remote operated vehicle simulation in a virtual reality interface
… this system. The first topic was to develop a kinematic model for one of NASA's rovers for use in a virtual reality simulation. The second aspect of this thesis is the implementation of the tools required for the mission planning module, which are the interfaces that the scientists use to plan …
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