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 10 of 10 for “"torque generation"”.
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Improvements in the control of robotic motion simulations using the ATB model
Modifications were made to the control model for torque generation in the Air Force Articulated Total Body (ATS) simulation computer program. Limb motion stability was improved by introducing integral control in the existing feedback control equation. Motion studies were performed using a Merlin …
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Some aspects of wind tunnel magnetic suspension systems with special application at large physical scales
… thesis.<br/>A powerful method of magnetic roll torque generation is essential for any LMSBS. Two variants of the new Spanwise Magnet scheme are studied herein. Spanwise Permanent Magnets are shown to be a practical method and are experimentally demonstrated using the Southampton University MSBS, …
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Optimal synthesis of force-generating planar four-link mechanisms
… planar four-bar linkages for specified force or torque generation. Unlike most previous research in mechanism force synthesis, this thesis targets linkage applications for which the mechanical advantage is prescribed but the position function is not. The advantage of this approach is that …
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Noise And Propulsive Efficiency Interactions For Rotors And Propellers At Constant Thrust
… allows for a decoupled rotational speed and torque generation, meaning that the electric motor can generate the same amount of torque while operating at different rotational speeds. This feature allows the rotor/propeller to hold constant thrust at different combinations of rotational speeds …
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Development of control algorithm for a new 12s-6p single phase field excited flux switching motor
… motor’s dynamic performance in terms of torque and current consumption. In this research, two algorithms have been proposed in which first algorithm is based on bipolar DC signals while second algorithm is based on field oriented control (FOC) principle. For position detection, algorithms …
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A Modeling Investigation of Obesity and Balance Recovery
… determine the effects of strength (maximum ankle torque and ankle torque generation rate) and weight loss on θ<sub>max</sub>. Changes in weight and strength were linearly related to changes in θ<sub>max</sub>. A 6.6 ± 0.4% decrease in weight or 6.9 ± 0.9% increase in strength were estimated as …
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Kinematics and Hydrodynamics of Cephalopod Turning Performance in Routine Swimming and Predatory Attacks
… the species.</p> <p>Flow patterns and relative torque contributions from the fins and jet varied with the speed of oncoming flow and orientation of the squid. Four turning categories were identified: (1) short tail-first turns, (2) long tail-first turns, (3) vertically oriented turns and (4) …
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Homopolar bearingless slice motors with magnet-free rotors for extracorporeal life support
… D2 steel rotor which generates a driving torque via hysteresis coupling. Our second bearingless motor uses a low-carbon steel rotor with surface saliencies which, in conjunction with a homopolar bias flux, makes the resulting torque-current relation similar to that of permanent-magnet …
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The production of a lyotropic liquid crystal coated powder precursor through twin screw extrusion.
… temperature with frictional heat and high torque generation due to significant compaction of coated particles which can be attributed to the elastic behaviour of Pluronic F127 solution at temperatures between ambient to typical body temperature. PLM images confirmed the cubic phase …
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The little engine that could: Characterization of noncanonical components in the speed-variable flagellar motor of the symbiotic soil bacterium Sinorhizobium meliloti
The bacterial flagellum is a fascinating corkscrew-shaped macromolecular rotary machine used primarily to propel bacterial cells through their environment via the conversion of chemical potential energy into rotational power and thrust. Flagella are the principal targets of complex chemotaxis …