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Design and control of a long stroke fast tool servo
(Massachusetts Institute of Technology, 2005)
In this thesis, I detail the design and control of a linear long stroke fast tool servo (FTS) with integral balance mass. The long stroke fast tool servo consists of an air bearing stage driven by a unique three phase oil ...
Effects of operating conditions, compression ratio, and gasoline reformate on SI engine knock limits
(Massachusetts Institute of Technology, 2005)
A set of experiments was performed to investigate the effects of air-fuel ratio, inlet boost pressure, hydrogen rich fuel reformate, and compression ratio on engine knock behavior. For each condition the effect of spark ...
Mechanisms of plastic deformation in amorphous silicon by atomistic simulation using the Stillinger-Weber potential
(Massachusetts Institute of Technology, 2005)
Molecular dynamics simulation of amorphous silicon (a-Si) using the Stillinger- Weber potential reveals the existence of two distinct atomic environments: one solidlike and the other liquidlike. The mechanical behavior of ...
Effects of select fluids on the friction of metal-on-polyethylene joint replacement surfaces
(Massachusetts Institute of Technology, 2005)
Lubricants are important factors in the tribology of total joint arthroplasty (TJA) surfaces, which are primarily comprised of a polished metallic or ceramic component articulating on an Ultra-High Molecular Weight ...
Feedback control of separation in unsteady flows
(Massachusetts Institute of Technology, 2005)
Prandtl (1904) showed that in a steady flow past a bluff body, streamlines separate from the boundary where the skin friction (or wall shear) vanishes and admits a negative gradient. Despite initial suggestions, however, ...
Element and system design for active and passive vibration isolation
(Massachusetts Institute of Technology, 2005)
This thesis focusses on broadband vibration isolation, with an emphasis on control of absolute payload motion for ultra-precision instruments such as the MIT/Caltech Laser-Interferometric Gravitational Wave Observatory ...
Towards verifiable adaptive control for safety critical applications
(Massachusetts Institute of Technology, 2005)
To be implementable in safety critical applications, adaptive controllers must be shown to behave strictly according to predetermined specifications. This thesis presents two tools for verifying specifications relevant to ...
Design of an MRI compatible robot for wrist rehabilitation
(Massachusetts Institute of Technology, 2005)
Magnetic Resonance Imaging (MRI) can be used to study the effects of robotic therapy on stroke patients. This thesis focuses on the design of an MRI compatible wrist robot to be used as a clinical tool for studying the ...
Hydrogen storage of energy for small power supply systems
(Massachusetts Institute of Technology, 2005)
Power supply systems for cell phone base stations using hydrogen energy storage, fuel cells or hydrogen-burning generators, and a backup generator could offer an improvement over current power supply systems. Two categories ...
Design of a snowboard simulating exercise device
(Massachusetts Institute of Technology, 2005)
Snowboarding, since its creation, has become one of the most widely practiced winter sports. Unfortunately, most snowboarding enthusiasts are unable to snowboard year round due to geographic and financial limitations. One ...