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Control And Design Of A Passive Solar Lumber Drying Kiln, Peter Chardavoyne
Control And Design Of A Passive Solar Lumber Drying Kiln, Peter Chardavoyne
Honors Scholar Theses
The passive solar lumber drying kiln design, developed by EE Senior Design Team 2317 is presented, tested, and discussed. The design incorporates solar power and a custom control system to dry 12’ lumber boards inside a shipping container much faster than air-drying methods, which can take up to a year for thorough drying, though this can be extended due to the unpredictability of weather events and conditions. This work presents the design as in the final report provided by the team, but provides a more detailed explanation and analysis of the microcontroller system, testing methods and outcomes, alternate solutions and …
A Novel Time-Domain Method Of Fault Diagnosis In Induction Motors, Bryan J. Davis
A Novel Time-Domain Method Of Fault Diagnosis In Induction Motors, Bryan J. Davis
Honors Scholar Theses
This paper introduces a novel time-domain method for detecting the four major types of induction motor faults without requiring complex signal processing or additional sensors other than those already in place for closed-loop motor control. This method artificially modulates the motor current feedback signal with a perturbed frequency that oscillates about the characteristic frequency of the fault in question. After filtering out the unwanted frequency components that result from the modulation, the selected fault-indicative component is a very slow sinusoid that is only present when the fault is present. The method looks for this fault-indicative component by monitoring the time …