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 11 of 11 for “"Torque Angle"”.
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Torque -Angle Based Analysis and Control of Induction Machines
… field-oriented control (FOC), and direct-torque control are the most popular induction motor control methods. One common feature that is shared by these control methods is to regulate the amplitude of the flux in the induction motor. There are numerous techniques to improve the …
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Design and construction of an electrically commutated A-C motor with a fixed torque angle.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1974. M.S.
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Analysis of lower limb injury prevention programmes in relation to hamstring and anterior cruciate ligament risk factors in team sport athletes
… programmes on hamstring strength and torque angle relationship. The results revealed that although both programmes increased hamstring strength, the effect of interventions on knee flexors torque-angle relationship was significantly different. Therefore, a systematic review of …
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An investigation of space suit mobility with applications to EVA operations
… (EVA) by compiling a detailed database of the torques needed to bend the joints of a space suit, developing models of the mechanics of space suit joints based on experimental data, and utilizing these models to estimate a human factors performance metric, the work envelope for space suited EVA …
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The use of series compliance and variable transmission elements in the design of a powered knee prosthesis
… the elastically conservative region of the knees torque-angle relationship during early stance phase knee flexion and extension. During this region of the gait cycle, the clutch was engaged and elastic energy was stored in the spring, thereby providing the reactionary torque at a substantially …
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Design of compliant mechanisms for attenuation of unidirectional vibrations in rotational systems
… the desired transmission of large-motion torque/angle inputs. This thesis investigates the design of vibration attenuating compliant mechanisms that are directly integrated into the load path of rotational systems. These devices enable designers to attenuate the amplitude of undesirable …
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3D Upper-extremity ExoNET: Improved Passive Exoskeleton for Gravity Compensation and Motor Rehabilitation
… Shoulder ExoNET (Exoskeletal Network for Elastic Torque) is conceived to provide effective gravity compensation for the upper limb through a fully passive, elastic based mechanism. The theoretical model re lies on a network of diagonal elastic elements acting as basis functions to generate …
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A neuromuscular-model based control strategy for powered ankle-foot prostheses
… trajectory tracking, where a specific target torque trajectory is known, and the controller issues commands to follow the trajectory as closely as possible. However, without a methodology to update the desired trajectory in real time, this type of control scheme is limited in that it cannot …
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Development of a converter for grid-tied and isolated operation of an interior permanent magnet synchronous generator, coupled to a twin-shaft gas turbine
… turbine emulator. A DC-machine that accepts both torque and speed references is used to emulate the behaviour of the gas turbine according to a modified Rowen gas turbine model. The emulator is coupled to a 1.5kW interior permanent magnet synchronous generator (IPM). The power density of a …
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Modal Analysis Techniques in Wide-Area Frequency Monitoring Systems
… in each machine corresponds directly with a torque angle. The potential energy in the system thus corresponds directly with bus angles through a linear transformation. The primary focus of this work is on frequency deviation modal characteristics – specifically damped oscillation frequencies, …
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Synchronized Rotor Angle Measurement of Synchronous Machines
… and stability protection of generators is the angle of the induced voltage internal to the generator. Current practice is to estimate this value using measurements from the terminals of the generator and mathematical models. This project aims to develop a system that would directly measure the …