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 23 for “"Potentiometer"”.
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Design, fabrication, and testing of a scanning probe potentiometer
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Design and testing of components for a low cost laser cutter
… was used to evaluate the potential of using a potentiometer for position feedback. Tests with the laser diode using different cutting strategies revealed that the cutting potential of the diode is limited and not likely well suited for cutting through materials of useful structural thickness …
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An articulated drill and hybrid tracking navigation system for orthopaedic surgery
… combination between optical tracking system and potentiometer tracking system in order to track surgical tool inside the bone, design and development of navigation software for articulated drill sheath, to measure reaction force when milling in different bending configurations and rake angles, …
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A stress-reducing explorable musical object
… tones when several pressure, bending, and soft potentiometer sensors were activated. These sensors were embedded in a soft, spherical outer shell made of roto-cast silicone. The final object was fully contained within this outer shell, as a Raspberry Pi computer was used to run Pure Data so it …
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An automatic traffic cones dispenser and collector system
… The sensor that had been used in this project is potentiometer which is used for measurement to measure the position needs for this robot arm. The size of traffic cones used is reduced to the smaller size which is compatible with the size of the robot arm in this project.
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Theoretical and experimental study into the dynamics and control of a flexible beam with a DC-servo motor actuator
… base and is instrumented with strain gages and a potentiometer. The control law is a form of linear, direct-output feedback. State estimators augment the control law to provide rate information that is not available from the instrumentation. Accurate modeling of the system’s inherent damping …
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A ball-on-beam project kit
… the sensor for the ball position was a linear potentiometer resistive element. After multiple iterations and debugging of the ball position sensor, the ball-on-beam system performed successfully, responding well to step commands and disturbances.
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Biomechanical Responses of Small Female Human Surrogates during Frontal Sled Tests using a Realistic Vehicle Environment
… the sacrum for all surrogates. The sternum chest potentiometer and Infra-Red Telescoping Rods for the Assessment of Chest Compression (IR-TRACC) were used to measure internal deflections for the HIII-05F and THOR-05F respectively. Chestbands were used to measure external deflections for all …
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Phased-locked loop study, simulation, and design of adaptive filter
… a way that the pass band could be controlled as potentiometer settings. The desirability of a variable pass band and low-pass filter was established. The condition that the filter must be able to sense when the loop was either locked or out of lock and adjust its pass band accordingly was set as …
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Characterizing and modeling the hydrologic properties of coal combustion by-products in landfills
… column tests, pressure plate tests, dew point potentiometer measurements and relative humidity measurements. Hydraulic properties were measured at various densities to simulate a range of conditions expected in the deep disposal pits. The measured hydraulic properties were utilized in a …
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Digital State Models for Infrastructure Condition Assessment and Structural Testing
… (e.g., digital caliper, crack microscope, wire potentiometer). Overall, features measured from the 3D point clouds data presented a maximum error of ±0.10 in. (±2.5 mm); and surface features (i.e., crack widths) measured from the texture information in textured polygon meshes had a maximum error …
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A Tractor Mounted Device Used for Comparison of In-Situ Soil Bearing Capacity Between Two Tillage Regimes
… plate and cone penetrometer loads. A linear potentiometer was used to measure penetration depth. This device is capable of measuring bearing capacities up to approximately 560 kPa and cone index up to about 7 MPa. A computer-implemented data acquisition system with National Instruments …
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A sensor system to detect events in gait for the correction of abnormalities in neurological patients
… by comparing it with the output from a potentiometer of a simple inverted pendulum. In five healthy subjects during walking, assessments have been carried out to compare the segment angle of the thigh, shank and foot calculated from the sensor unit, with the same angles measured using a …
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Traumatic Brain Injury As An Environmental Risk Factor For Neurodegeneration: Elucidating Causal Mechanisms With Drosophila
… pulse whose amplitude is controlled through a potentiometer, while an Arduino microcontroller is used to set its duration. Together, these dictate the range of motion of the piezoelectric. By manipulating these variables, we have described 3 levels of injury severity – mild, moderate and severe …
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Supercapacitor-based linear converter for voltage regulator modules
… (VID) capability was implemented using a digital potentiometer. Theoretically, when an LDO converts 3.5 V to 1.5 V a maximum efficiency of 1.5/3.5(~43%) can be achieved. According to the general theory of SCALDO, a single supercapacitor configuration can achieve nearly twice the linear regulator …
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Comparison of conjunctival pedicle flap to corneal adhesion achieved by Tisseel® fibrin glue, ethyl cyanoacrylate adhesive, ReSure® hydrogel sealant, and conventional suturing with 8-0 VICRYL® suture
… interfaces were clamped to an accelerometer and potentiometer device, and loaded under video surveillance until the point of failure. Peak load at failure was determined for each test and used to compare between sample types. Results. 40 flaps underwent tensile force testing, with 6 being omitted …
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Rapid contour determination using a floating pin matrix
… using the moving pins as part of a "reverse potentiometer" and using two parallel plates as electrical leads that contact each and every one of the pins. The pins and the parallel plates are thus utilized both for physical function of the device and the measurement of the displacement, …
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Force And Electromyographic Responses To Ergometer Rowing
… with performance outcomes recorded using a potentiometer to measure handle position and a strain gauge to measure force output. Bipolar surface electrodes were used to record EMC activity of the rectus femoris and vastus latcralis during all contractions. Biomechanical and EMO data were …
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Soil Moisture Measurements and Modeling at a Geomorphically Reclaimed Coal Mine in New Mexico
… tests, pressure plate tests, and dew point potentiometer measurements. In addition, hydraulic properties were estimated from field tension infiltrometer tests. Laboratory and field tests accounted for the variable soil density in the near surface. Periodic soil moisture measurements at the …
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Single Molecule Junction Conductance and Binding Geometry
… we are able to create a 3-nm-long molecular potentiometer, whose resistance can be tuned exponentially with Angstom-scale modulations in metal-molecule configuration. These experiments points to a new paradigm for attaining reproducible electrical characteristics of metal-organic devices …
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