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 20 for “"motion profile"”.
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Influence of motion profile on estimating anatomical elbow joint axes using inertial measurement units
Current human motion measurement systems using inertial measurement units (IMUs) typically rely on precise alignment, static calibration poses, or dynamic calibration motions. Muller et al. recently proposed a method for online calibration of the human elbow anatomical joint axes via decomposition …
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Motion coordination and control in the development of a gait rehabilitation system
… trajectories that limit the joints' range of motion (ROM) thus improving the gait training safety. The movement of the input links of gait generation mechanisms must be controlled to provide proper timing of both stance and swing phases during a training session. This research describes the …
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Towards improving the Statscan X-ray image quality through sliding mode control of the C-arm
… (P-PI). Transient errors in the trapezoidal motion profile of the scanning C-arm may cause mismatches between the detector and the collimated beams from the X-ray source. This results in a partial degradation of image quality. The Statscan™ X-ray system was investigated and the following …
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Influence of aspect ratio on dynamic stall of a finite wing
… was used for all wing models and the sinusoidal motion profile consisted of an angle of attack range between 4 and 22 degrees. After acquiring the experimental performance data, it was found that decreasing the AR leads to a decrease in the unsteady loading of the wing and postpones the dynamic …
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Influence of environmental context on affect recognition of stylized movements
… or unconsciously) constantly monitoring the motion profile of counterparts in order to make judgments about the state of these counterparts. This thesis includes two main contributions: (1) the development of two MATLAB tools that are designed to aid in the creation and simulation of stylized …
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Fixed-wing Classification through Visually Perceived Motion Extraction with Time Frequency Analysis
… aircraft using vision systems to measure their motion characteristics is explored. It builds on the assumption that at least continuous visual detection or at most visual tracking of an object of interest is already accomplished. Monocular vision is in part limited by range/scale ambiguity, …
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Comparing Motion Outcomes in Salvage Procedures for Wrist Arthritis
… of these procedures often only report uniplanar motion, rather than multiplanar motion which is more representative of functional wrist motion. Further, the impact of altering the relationship of the proximal and distal carpal rows in the coronal plane during 4CF has not been well-studied. The …
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Ros-Drill Automation: Visual Feedback Control And Rotational Motion Tracking
… we improve the performance of the rotational motion tracking.</p> <p>Ros-Drill<sup>©</sup> is an inexpensive set-up, which creates high-frequency rotational oscillations at the tip of an injection pipette tracking a harmonic motion profile. These rotational oscillations enable the pipette to …
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Optimized Sythesis of a Force Generating Planar Four-Bar Mechanism Including Dynamic Effects
… to design linkages having a desired resistance profiles under an assumed motion profile. The design approach presented in this thesis calculates the resistance forces by using both the static and the anticipated dynamic effects of the resistance loading. Almost all research to date has assumed …
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Motion design, control and implementation in robot manipulators
… robots, specifically the tracking accuracy and motion duration, is influenced by both the nominal motion profile and the feedback control method employed. Three schemes are developed and experimentally tested to tackle the improvement of dynamic performance, in the absence of accurate dynamic …
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Motion design for high speed machines.
… a programmable manipulator depends on both the motion profile to be followed and the feedback control method used. To improve this performance the manipulator trajectory requires planning at an advanced level and an efficient control method has to be used. The purpose of this study is to …
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Slamming of High Speed Craft: A Parametric Study of Severe Cases
… of high-speed surface vessels. The controlled motion experiments presented in this thesis were designed to be an intermediate step between vertical water entry tests of a wedge and a traditional tow tank experiment of a planning hullform in waves. This allowed a deeper study of the hydrodynamic …
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Adaptive AUV-assisted diver navigation for loosely-coupled teaming in undersea operations
… for cooperative navigation based on their unique motion profile and variable pace from diver to diver. By leveraging the vehicle’s sensor suite, acoustic modem technology, and nonlinear least-squares state estimation, we enable enhanced diver localization and navigation without a surface presence. …
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Adaptive AUV-assisted Diver Navigation for Loosely-Coupled Teaming in Undersea Operations
… for cooperative navigation based on their unique motion profile and variable pace from diver to diver. By leveraging the vehicle’s sensor suite, acoustic modem technology, and nonlinear least-squares state estimation, we enable enhanced diver localization and navigation without a surface presence. …
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Considerations for and Implementations of Deliberative and Reactive Motion Planning Strategies for the Novel Actuated Rimless Spoke Wheel Robot IMPASS for the Two-Dimensional Sagittal Plane
… given spoke in the hub. This form of novel locomotion combines the efficiency of a wheeled robot and the mobility of a legged robot, arriving at a very practical mobility platform. A highly mobile robot such as IMPASS could prove very valuable in applications where the terrain is complex and …
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Personal Healthcare Agents for Monitoring and Predicting Stress and Hypertension from Biosignals
… can continuously record our location and motion profile. Sensors on wearable devices can track changes in our bodies’ physiological responses. This monitoring also has the capability to revolutionise the health care domain by creating more informed and involved patients. This has the …
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A phenomenological rapid sloshing model for use as an operator guidance system on liquefied natural gas carriers
… near the critical depth. An irregular surge motion profile from an ITTC two-parameter spectrum is applied to the tank and the mean error from the RSM solution remains below 15% when using momentum and transverse force. When applied to sloshing with a 10% filling level excited by an irregular …
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Modelling and Control of Tubular Linear Generators for Wave-Power Applications
… have the ability to be coupled directly to the motion of a point-absorber or float, eliminating the need for potentially complex mechanical/hydraulic intermediate stages which are often required for designs based on rotary generators. This decreases system complexity / maintenance requirements …
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Four-Dimensional Imaging of Respiratory Motion in the Radiotherapy Treatment Room Using a Gantry Mounted Flat Panel Imaging Device
<p>Imaging respiratory induced tumor motion in the radiation therapy treatment room could eliminate the necessity for large motion encompassing margins that result in excessive irradiation of healthy tissues. Currently available image guidance technologies are ill-suited for this task. …
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A Geometry-Based Motion Planner for Direct Machining and Control
… tools directly from process planning software. A motion planning module is developed for the DMAC system that operates directly off path geometry without pre-tessellation. The motion planner is developed with the intent to process Bezier curves. The motion planning module includes a deterministic …