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 24 for “"Motion simulation"”.
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Earthquake Motion Simulation and Reliability Implications
… Carbondale IL, and St. Louis MO. Since ground motions are strongly dependent on local soil condition and yet the soil profile variation within a city has not been mapped in detail, the soil condition of a city is assumed to have small variation and can be approximately modeled by a generic …
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Human dynamic orientation model applied to motion simulation
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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Submarine motion simulation including zero forward speed and propeller race effects
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1990.
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Wrist Motion Simulation With a Rigid Body Spring Model Comparing Different Elements Modeling Approaches
… body spring model was used to simulate wrist motions. The carpal bones were constructed based on a computed tomography of a cadaver wrist. Bony structures were assembled as a wrist model in the simulation software, RecurDyn. Articulations between wrist joint bones were modeled using gliding …
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Digital twin model of two-arm collaborative robot for human arms motion simulation using reverse engineering
… robot that can be deployed to simulate human arm motions using the reverse engineering process. A collaborative robot named ABB Yumi – IRB14000 was considered for this study. The purpose of the experiment was to find the best version of the digital twin model by applying translation and rotation …
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A functional task analysis and motion simulation for the development of a powered upper-limb orthosis
… priorities. In the second stage, the natural arm motions of able-bodied individuals performing the tasks identified as high priority were profiled with a video trackingsystem. Finally, a kinematic simulation algorithm was developed to evaluate whether a given orthosis configuration is able to …
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Improved Understanding of The 2018 Mw7.5 Palu Earthquake Using Local Earthquake Tomography and Numerical Ground Motion Simulation
… tomography (LET) and long-period ground motion simulations using three-dimensional (3-D) and basin models to analyze basin effects during the earthquake. For LET we have utilized P-wave arrival times recorded by both permanent and temporary seismograph networks covering the period from …
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Improved Understanding of The 2018 Mw7.5 Palu Earthquake Using Local Earthquake Tomography and Numerical Ground Motion Simulation
… tomography (LET) and long-period ground motion simulations using three-dimensional (3-D) and basin models to analyze basin effects during the earthquake. For LET we have utilized P-wave arrival times recorded by both permanent and temporary seismograph networks covering the period from …
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Cargo Pendulation Reduction on Ship-Mounted Cranes
… are used for this task, however the wave-induced motions of the ship can cause large pendulations of cargo being hoisted by a ship-mounted crane. This makes cargo transfer in rough seas extremely dangerous and therefore transfer operations normally cease when sea state 3 is reached. If the cargo …
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Development and evaluation of postural control models for lifting motions and balance control
Accurately simulating human motions is a major function of and challenge to digital human models and integrating humans in computer-aided design systems. Numerous successful applications of human motion simulation have already demonstrated their ability to improve occupational efficiency, …
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Adaptive Flight Control in the Presence of Input Constraints
… is applied to aircraft and missile longitudinal motion. Simulation results show satisfactory tracking of the states of modified reference system.
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A Descriptive Analysis of Public Comments Submitted in Response to Notice of Proposed Rules on Air Carrier Pilot Qualification
… The majority of respondents indicated that full-motion simulation training is not necessary for the ATP Certification Training Program (CTP), and many suggested that the specific level of simulation should depend on the type of training being conducted. Responses were also vastly in favor of an …
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Quantifying Extreme Event Statistics for Ship Motions and Loads Using Low-Fidelity Models and Recurrent Neural Networks
Ship operators and designers alike use ship motion simulation software to predict ship responses in irregular ocean waves, along with the statistics of extreme events. Ship operators rely on precalculated polar plots during heavy seas to select speeds and headings that will protect the ship and …
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Investigating the Use of Inductive Transfer Learning and RNN to Quantify Extreme Event Statistics of Ship Motions
Ship motion software has been a critical tool for designers to study the extreme responses of ships in irregular waves. These studies and simulations often take thousands of hours to predict and analyze the ship’s motion. Simulation results are often imperative to ensure the development of accurate …
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A Virtual Reality Rehabilitation Interface with Augmented Sensing, Interaction, and Visualization Techniques
… sensory input techniques, particularly motion tracking and mapping. In response to this reverted design methodology, the primary object of this thesis is to survey an effective design and engineering paradigm of virtual rehabilitation spaces, including sensing technologies, interaction …
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Neural-Network and Fuzzy-Logic Learning and Control of Linear and Nonlinear Dynamic Systems
… to develop nontraditional strategies to provide motion control for different engineering applications. We focus our attention on three topics: 1) roll reduction of ships in a seaway; 2) response reduction of buildings under seismic excitations; 3) new training strategies and neural-network …
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Nonlinear Free Surface and Viscous Effects on Underwater Vehicle Maneuvering and Seakeeping
The accurate prediction of forces and motions on autonomous underwater vehicles (AUVs) operating close to the wavy free surface is imperative to their usefulness as oceanic research and warfare craft. Maneuvering models for underwater vessels are typically constrained to deep water motions where …
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An Assessment of 3D Tracking Systems and Lidar Data for RPO Simulation
… to develop a rendezvous and proximity operation simulation to be tested with physical sensors and hardware, in order to assess the fidelity and performance of low-cost off-the-shelf systems for a hardware-in-the-loop testbed. With the push towards complex autonomous rendezvous missions, a low …
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