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.
Results
Showing 1 to 20 of 342 for “"Wrist"”.
-
Development of the Carpal Wrist; a Symmetric, Parallel-Architecture Robotic Wrist
… device that is ideally suited as a robotic wrist or platform manipulator. Because of its similarity to the human wrist, this invention has been named the "Carpal Wrist." Much like its natural counterpart, the Carpal Wrist has eight primary links, corresponding to the eight carpal bones of …
-
It's all in the wrist : a quantitative characterization of human wrist control
… a quantitative characterization of humans' wrist rotations, paving the way for intelligent robot-assisted wrist rehabilitation. More specifically, we have characterized the kinematics, dynamics, and adaptation of wrist rotations, and discussed implications for planning and control. …
-
Mechanical design of the Carpal wrist: a parallel-actuated, singularity-free robotic wrist
… their use as base manipulators and robotic wrists has been limited by their more complicated kinematic solutions and, especially in the case of a wrist, severely limited work spaces. Due to these shortcomings, robotic wrists in existence today are typically built as serial kinematic chains …
-
Wrist posture during computer mouse usage: the effects of wrist support and surface height
… the effects that mouse surface height and wrist support have on wrist posture. Distance between targets and target width were varied to determine performance time and performance accuracy throughout the conditions. Results showed that the presence of a wrist support decreased wrist …
-
A robot for wrist rehabilitation
… focus is the mechanical design of a robot for wrist rehabilitation. The anthropometric background data, the design's functional requirements, the strategic design selection and the detailed design are presented.
-
Error modeling of the carpal wrist
… compared to serial devices. However, robotic wrist development has traditionally focused on serial mechanisms having a large, spherical workspace and simpler kinematic solutions. The Carpal wrist is a unique parallel mechanism consisting of a fixed base and a movable output plane connected via …
-
The effects of keyboard height, wrist support and keying time on wrist posture and trapezius EMG during keyboarding
… of keyboard height, the presence or absence of a wrist support, and keying time on different risk factors associated with musculoskeletal disorders experienced by VDT operators. Measurements of wrist posture, activity of the trapezius muscles, shoulder abduction and typing performance were …
-
Proprioceptive Neuromuscular Facilitation of the Wrist Flexors
The present study examined a wrist extension-to-flexion contraction pattern that was theorized to result in proprioceptive neuromuscular facilitation. However, the “reversal of antagonists” contraction pattern may have, alternatively, interfered with motor learning-related increases in strength. …
-
Comparing Motion Outcomes in Salvage Procedures for Wrist Arthritis
… procedures that may be offered in advanced wrist arthritis. The optimal clinical treatment remains unclear. Biomechanical studies comparing outcomes of these procedures often only report uniplanar motion, rather than multiplanar motion which is more representative of functional wrist motion. …
-
Continuous assessment of epileptic seizures with wrist-worn biosensors
… The first section presents the development of a wrist-worn sensor that can provide comfortable and continuous measurements of EDA, a sensitive index of sympathetic activity, and ACM over extensive periods of time. The wearable biosensor achieved high correlations with a Food and Drug …
-
The design of an integrated hand and wrist mechanism
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
-
DexWrist: A Robotic Wrist for Constrained and Dynamic Manipulation
DexWrist is a compliant robotic wrist designed to advance robotic manipulation in highly-constrained environments, enable dynamic tasks, and speed up data collection. DexWrist is designed to be close to the functional capabilities of the human wrist and achieves mechanical compliance and a greater …
-
Characterization and control of a robot for wrist rehabilitation
… and implementation of a robot for wrist rehabilitation, designed to provide three rotational degrees of freedom. The wrist motions of flexion/extension and abduction/adduction are governed by a differential gear mechanism, while pronation and supination of the forearm are actuated …
-
Design of an MRI compatible robot for wrist rehabilitation
… focuses on the design of an MRI compatible wrist robot to be used as a clinical tool for studying the stroke recovery process and the effectiveness of robotic therapy. The robot must comply with strict MRI compatibility requirements, which require careful selection of materials and …
-
Effects of varying inertial load on human wrist movement
To study natural wrist movements in human subjects, a magnetic motion sensing system was employed to document unimpeded motion. Three identical bottles of different weights were designed as handles to provide a wide range of inertial loads. Subjects executed a series of horizontal and vertical …
-
Physical Therapy after Triangular Fibrocartilage Injuries and Ulnar Wrist Pain
… The ulnar side of the wrist has been referred to as the “black box” of the wrist because of its complex structures and sophisticated anatomy, disorders at this anatomical site have been compared to those of low back pain</p> <p><strong>Purposes: </strong>The purpose of …
-
Classification of neuromechanical control strategy in a wrist rotation task
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
-
Design and Modeling of Parallel Exoskeleton for Wrist Tremor Suppression
… mitigate pathological tremors in the forearm and wrist. While these forearm exoskeletons can effectively suppress tremors, they still require significant improvements in ergonomics to assist in SET. The ergonomics of the exoskeleton can be improved via design and motion control pertaining to human …
Page 1 of 18