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 12 of 12 for “"data acquisition and control system"”.
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Data acquisition and control system for the OLYMPUS propagation experiments
A data acquisition and control system (DACS) has been designed and constructed for use during propagation experiments with the OLYMPUS satellite. OLYMPUS is a European Space Agency experimental satellite that broadcasts coherent at 12, 20 and 30 GHz and is viewed from Blacksburg, Virginia at an …
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Applied high resolution digital control for universal precision systems
This thesis describes the design and characterization of a high-resolution analog interface for dSPACE digital control systems and a high-resolution, high-speed data acquisition and control system. These designs are intended to enable higher precision digital control than currently available. The …
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An automated probe for thermal conductivity measurements
… a small, effectively spherical, heat source and temperature sensing probe. The actual thermal conductivity measurements lasted 30 seconds. After approximately 15 minutes of data reduction, a value for thermal conductivity was obtained. The probe yielded local thermal conductivity …
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A microcomputer-based data acquisition system for diagnostic monitoring and control of high-speed electric motors
A microcomputer-based data acquisition and control system was designed for the diagnostic monitoring and control of high-speed electric motors. The system was utilized in high-speed bearing life-testing, using an electric motor as a test vehicle. Bearing vibration and outer race temperature were …
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High Temperature Silicon Carbide Mixed-signal Circuits for Integrated Control and Data Acquisition
<p>Wide bandgap semiconductor materials such as gallium nitride (GaN) and silicon carbide have grown in popularity as a substrate for power devices for high temperature and high voltage applications over the last two decades. Recent research has been focused on the design of integrated circuits for …
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Computerized feedback control of an environmental chamber
… Hence there is a need for a dynamically controlled artificial environment for plant studies. This project demonstrates the control of temperature, humidity and SO₂ concentration in a Continuous Stirred Tank Reactor (CSTR) system using feedback control through a computer. An IBM-PC was …
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Thermal performance of a room with wall latent heat storage
… efficiency. In this study, the feasibility and benefits of utilization of phase change materials (PCMs) in building envelope components for thermal storage were investigated. The phase change material (PCM) gypsum board used in this study was made by soaking conventional gypsum board in a …
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An innovative portable monitoring unit for air quality in animal housing
Made available in DSpace on 2015-07-22T22:17:58Z (GMT). No. of bitstreams: 2 JI-THESIS-2015.pdf: 4833031 bytes, checksum: 6ba839aa3c8f4fa2ad85192be43c7614 (MD5) LICENSE.txt: 4204 bytes, checksum: 531bc2bb4e3911d298c967420f5894ce (MD5) Previous issue date: 2015-04-29
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Boundary layer transition in simulated turbine blade flow
… on a flat, polished aluminium plate using standard hot wire instrumentation. An automatic data acquisition and control system was based around an Amstrad PC1640 16-bit microcomputer. By using assembly language subroutines, very fast sampling rates could be achieved which allowed a detailed …
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The Accuracy and precision of ORP monitoring in bio-nutrient removal processes
… in the anoxic zone. First, the reliability and sensitivity of ten probes were tested and evaluated. Next, ORP values in complete denitrification conditions from biological systems with different initial NO concentrations and denitrification rates were collected and the usefulness ofthese …
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Design and prototyping of a test facility to investigate the transport properties of dilute phase gas-particle flows applicable to coal-fired power plants
Understanding the properties of dilute phase gas-particle transport and the applicability of the different empirical correlations found in literature for these properties are crucial in the study of Pulverized Fuel conveying applicable to South African coal-fired power plants. Having access to a …