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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 48 for “"Angle Measurement"”.
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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 …
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Bi-modal hemispherical sensors for three axis force and contact angle measurement
Humans and animals demonstrate a unique ability to interact with the physical environment around them with coordination and control, including moving quickly across rugged terrain or deftly handling small objects. Much of this success is related to our ability to accurately perceive the world …
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The Disk Structure of Late Type Galaxies: Determining the Black Hole Mass Function of Low Surface Brightness Galaxies Through Logarithmic Spiral Arm Pitch Angle Measurement
… relation between the logarithmic spiral pitch angle of the galactic spiral arms with other properties of the galaxy, such as central Supermassive Black Hole (SMBH) mass. Our work continues a study of the Black Hole Mass Function (BHMF) in local galaxies by recording the pitch angles of spiral …
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Synchronized Measurement of Machine Rotor Angle and Its Application
The internal voltage angle of a generator is an important parameter that indicates the stability, both transient and steady-state, of the generator. This paper proposes a method of measuring and synchronizing the internal angle using a microprocessor and an optical encoder installed on the shaft of …
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Examining the Relationship Between Students' Measurement Schemes for Fractions and Their Quantifications of Angularity
In the basic understanding of measurement, students are expected to be able to subdivide a given whole into a unit and then change the position of that unit along the entire length of the whole. These basic operations of subdivision and change of position are related to the more formal operations …
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An Optoelectronic Detector Circuit for Measuring Ultra-Small Angular Deflections
… detector subsystem for use in the Small Angle Measurement Device (SAMD) system. The SAMD measures the ultra-small angular deflection (bending) of the substrate to which it is attached.
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Self-assembly of conformal polymer electrolyte film for lithium ion microbatteries
… energies, and then by measuring the contact angles of PEO on LCO in hexane and hexadecane, chosen for their immiscibility in PEO. For better comparison, these experiments were repeated using water instead of PEO, for a total of four systems tested. This data allowed an estimate for the …
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Separation and characterization of crude oils and investigation of their wetting properties on rock surfaces
… was chosen as an appropriate method for contact angle measurement because it involves the formation of a rigid film instead of the use of the oil withdrawal method or a moving needle. The contact angle measurement method has some limitations; for instance, sometimes data is not reproducible. In …
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EVALUATION OF PHASE ANGLE AS A PRACTICAL PARAMETER FOR LOW TEMPERATURE SPECIFICATION GRADING OF ASPHALT BINDERS
… aims to examine the viability of limiting phase angle measurement as a credible alternative to the laborious extended BBR (EBBR) procedure. In this study, a total of 239 samples were tested from various agencies and are grouped into tank samples, core samples and loose mix samples. Agency A and …
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Lanksčių anglinių nanovamzdelių dangų gamyba, modifikavimas ir tyrimas /
… Moreover, coatings were tested using a contact angle measurement method to determine the total surface energy and its components. Morphology of coatings was analysed by AFM and SEM. Besides, Raman spectroscopy and Raman spectroscopy mapping was used to characterize the coatings. Electrochemical …
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Measuring and Improving Copper-Polyimide Adhesion
"A contact angle measurement technique has been used to determine the thermodynamic adhesive strength between nano-sized copper clusters and polyimide. The copper clusters are formed under UHV conditions by using mono-layer per minute deposition rates to assist equilibrium cluster formation. Values …
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Hardware Design of a Wearable System for Gesture-Based Teleoperation of a Robotic Manipulator
… of sensors currently in use for human joint angle measurement is presented. Based on this review, a method was chosen that uses a variable-length fiber optic sensor. Several different types of optical fibers, along with a variety of test configurations, were initially evaluated, and the most …
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Development and implementation of nanoscale materials in engineering applications
… The surface made was exposed to contact angle measurement and X-ray photoelectron spectroscopy (XPS) to determine the status of the functionalization. Contact angle measurement confirmed the existence of a change in the surface chemistry but no hydrophobic surfaces were created as all …
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Synthesis and Characterization of Pyrrole Based Adhesion Promoter Systems on Oxide Substrates
… Several analytical techniques such as contact angle measurement, surface plasmon resonance spectroscopy (SPR), UV-VIS Spectroscopy, grazing incident FTIR, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were employed to characterize …
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Adaptive control of a generic hypersonic vehicle
… and sensor bias of +1.6 degrees on sideslip angle measurement. The closed-loop reference model adaptive controller maintains at least 73% of the delay margin provided by the robust baseline design, tolerating input time delays of between 18-46 ms during 3 degree angle of attack doublet, and …
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Strange quark contributions to nucleon electric and magnetic form factors from parity-violating electron scattering asymmetries in the backward angle g0 experiment
… well as to the axial current of the nucleon. The measurements were made using the polarized beam at Jefferson Laboratory by detecting electrons scattered at ~110 degrees from liquid targets. Together with previous results from the G0 forward angle measurement, the form factors which characterize …
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Investigating the Surface Energy and Bond Performance of Compression Densified Wood
… energy was studied using sessile drop contact angle measurement and the Chang model of acid-base, surface energy component calculation. Water, glycerol, formamide, ethylene glycol, and -Bromonapthalene were used as probe liquids. Densified and hygro-thermally treated yellow-poplar had …
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Fibre Modification for Concrete Reinforcement using a Novel Atmospheric Microwave Induced Plasma Torch (MIPT)
… of fibres was performed using contact angle measurement, scanning electron microscopy and atomic force microscope and the results are presented and analysed. Thus, the optimised plasma condition for each separate fibre is utilised. Fibres treated with optimised plasma condition were …
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Variations in the insertions of the tibialis posterior muscle and the structure of the medial longitudinal arch
… as the most common combinations of insertions. Measurements describing the medial longitudinal arch of the feet were taken, using a soft tissue intact method (arch index) and the post-dissection method (talus-first metatarsal angle). The insertion data were then compared to the arch …
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