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 77 for “"Inertial Measurement Units"”.
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Methods to obtain pedestrian distance walked via inertial measurement units
… This App, designed to work with one or two inertial measurement units (IMUs), requires gait analysis as one of its components. The most difficult part of performing this analysis is determining how far the patient has walked. Two competing methods were identified to gather this data. The …
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Using magneto-inertial-measurement-units to track upper-limb movement during rehabilitation
… A promising approach is to use Magnetic and Inertial Measurement Units (MIMUs), but they provide body-segment orientations rather than anatomical joint angles, the latter being more meaningful. To solve this problem the sensor orientation data must be interpreted anatomically, which requires …
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The use of inertial measurement units for the determination of gait spatio-temporal parameters
… this work was to develop a methodology whereby inertial measurement units (IMUs) could be used to obtain accurate and objective gait parameters within typical developed adults (TDA) and Parkinson’s disease (PD). The thesis comprised four studies, the first establishing the validity of the IMU …
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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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A personal inertial-navigation system based on multiple distributed, nine-degrees-of-freedom, inertial measurement units
The use of inertial-measurement units (IMUs) for personal navigation is investigated in this thesis. IMUs lack a position-finding algorithm that optimally blends sensor data to achieve high accuracy in a GPS-denied environment. In this research, software and a methodology for tracking position …
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An investigation into the use of inertial measurement units to assess the loading profiles of adolescent Badminton players.
… from trunk-mounted accelerometers, housed within Inertial Measurement Units (IMUs), yet many sports have specific anatomical regions where higher loads or injuries occur, which may not be measurable through trunk-mounted IMUs. Badminton was selected for study due to the high prevalence of both …
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Non-Treadmill Trip Training – Laboratory Efficacy, Validation of Inertial Measurement Units, and Tripping Kinematics in the Real World
… real-world trips may be captured using wearable inertial measurement units (IMUs), yet IMUs have not been adequately validated for this use. Therefore, the goal of the second study was to investigate the concurrent validity of IMU-based trunk kinematics against the gold standard optical motion …
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Evaluation of functional improvement in patients with chronic non-specific low back pain using inertial measurement units before and after pilates and physiotherapy interventions
… με τη χρήση φο-ρέσιμων αδρανειακών αισθητήρων (Inertial Measurement Units – IMUs), καθώς και της εκτίμησης της λειτουργικής ανικανότητας μέσω του Oswestry Disability Index (ODI). Τα αποτελέσματα έδειξαν ότι οι παρεμβάσεις οδήγησαν σε στατιστικά σημαντικές βελτιώσεις στην κινητικότητα και τη …
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Sensor distribution for collaborative localization using radio ranging
… of a group of networked agents using range measurements between themselves in a global reference frame. While operating in an environment with sparse Global Positioning System availability and intermittent inter-agent range measurements, additional sensors may be needed to maintain a given …
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Autonomous navigation and localization of a quadrotor mini-uav by landmarks in indoor environments
… navigation by using vanishing point and inertial navigation methods. And indoor localization by using artificial landmarks in a known environment by utilizing vertical and horizontal cameras onboard of the quadrotor is proposed. The local data from the inertial measurement units onboard …
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Fall Risk Assessment By Measuring Determinants Of Gait
… sensor techniques and investigated if miniature inertial measurement units could effectively measure the important parameters of determinants of gait, and therefore assess slip and fall risk. Results in this study suggested that pelvic rotation and knee flexion measured by the inertial …
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A framework for collecting data : revising sensor synchronization methods
… of sensors: a load cell, a pressure mat, and inertial measurement units.
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Influence of Vibratory Plantar Stimulation on Cortical Motor Planning and Spatiotemporal Step Parameters
… spectroscopy and lower-limb kinematics via inertial measurement units. Planning significantly increased left PMC activation relative to rest; however, vibration and step type did not modulate this response, and no association was found between PMC planning activation and SWV.
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IMU-Integrated 'Smart' Knee Brace Validation Using Optoelectronic Motion Capture During Treadmill Walking
… of space, and require training to operate. Inertial measurement units (IMUs) are small, portable devices that measure linear acceleration, angular velocity, and magnetic field and have been proven to be valid in measuring joint angles. A ‘smart’ brace was implemented with two IMUs and the …
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Corridor Navigation for Monocular Vision Mobile Robots
… environment. This can be laser range finders, inertial measurement units, motor encoders, and cameras.</p> <p>By combining all these sensors, there is unused data which could be useful for navigation. To draw back and develop a baseline approach, this thesis explores the reliability and …
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IMU-based estimation of human lower body kinematics and applications to extravehicular operations
The use of body-worn inertial measurement units (IMUs) as an alternative to traditional human optical motion capture (OMC) techniques has gained increasing attention over the last twenty years. In contrast to traditional OMC, IMUs are less intrusive and allow measurements to be taken in the …
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Design of a Novel Powered Exoskeleton for Human Jump Augmentation
… design analysis are presented. Encoders, inertial measurement units, and time of flight sensors are implemented alongside multiple microcontrollers and robust communication protocols to estimate system state and control actuation. Preliminary test results of a manufactured system are …
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Active Perception for Inertial-Aided Systems
Inertial Measurement Units (IMUs) are proprioceptive sensors that measure angular velocities and linear accelerations which are integrated to estimate the relative pose of vehicles in motion. Estimation algorithms used with IMUs need to account for sensor noises which corrupt the measurements, and …
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UCT SHARC Buoy V3.0: Waves-in-ice measurement in the Antarctic MIZ
… at scale. To achieve this, the use of low-cost inertial measurement units (IMUs) to measure wave activity on a mock ice floe was validated in a controlled wave tank setting. Following this, the existing SHARC Buoy instrument was upgraded to collect and process high-frequency IMU data and tested …
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