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Full-Text Articles in Mechanical Engineering
Thermal Vacuum Chamber Modification, Testing, And Analysis, Jared C. Lehmann
Thermal Vacuum Chamber Modification, Testing, And Analysis, Jared C. Lehmann
Master's Theses
This work discusses the modification and analysis of the Blue Thermal Vacuum Chamber (TVAC) located at the Space Environments Lab at California Polytechnic State University, San Luis Obispo. The modified design has a cylindrical test section and can accommodate 6U Cubesats or larger for educational or research purposes. The sizing process for the modified shroud cooling system and modular heating plates is discussed. The modified cooling system uses existing nitrogen plumbing into the chamber and control systems with a new copper shroud. The modified heating system uses modular heater plates, which utilize the existing three heater strips. The modified system …
Nonlinear Model Development And Validation For Ball And Plate Control System, Zachary Richter
Nonlinear Model Development And Validation For Ball And Plate Control System, Zachary Richter
Master's Theses
Ball and plate balancing control systems are commonly studied due to the complex dynamics associated with the instability of the system in open-loop. For simplicity, mathematical models describing the ball and plate dynamics are often linearized and the effects of complex motion are assumed to be negligible. These assumptions are rarely backed with evidence or explanations validating the simplified form of the dynamical equations of motion. This thesis focuses on developing a nonlinear model that more accurately defines the dynamics of the system, in order to quantify the error of linear and nonlinear models when compared to a Simscape physical …