Browsing Theses (MU) by Thesis Advisor "Fales, Roger"
Now showing items 1-20 of 22
-
Applying and analyzing robust modern control on uncertain hydraulic systems
(University of Missouri--Columbia, 2006)In this work modern robust control systems are designed and compared to standard techniques for a hydraulic implement system. The system includes an independent metering valve (IMV) and a variable displacement pump. The ... -
Attenuation of low frequency pressure pulsations
(University of Missouri--Columbia, 2021)In this thesis, the concept of hydraulic pulsating filter is explored and developed. The filter or resonator is designed to attenuate the pulsation that occurs when the hydraulic pump is discharged. Pumps pulsate over a ... -
Control of arterial hemoglobin saturation in premature infants using H-infinity synthesis and performance specifications from best clinical practice
(University of Missouri--Columbia, 2013)This work details the development of a novel control system for regulating the Arterial Hemoglobin saturation (SpO2) of premature infants. An H-infinity synthesis method was used to derive multiple controllers to cover a ... -
Design and clinical testing of a control system and event prediction system for premature babies in the NICU.
(University of Missouri--Columbia, 2023)[EMBARGOED UNTIL 5/1/2024] The presented work is a thesis used as evidence towards defending a master's degree in the department of Electrical Engineering at the University of Missouri, Columbia. The project presented ... -
Design of a simple drive train and control system for an oxygen blend valve for use with premature infants
(University of Missouri--Columbia, 2022)Automating the regulation of the fraction of inspired oxygen (FiO2) in neonatal mechanical ventilation shows great promise of providing better patient outcomes. Historically, controlling the FiO2 valve has required manual ... -
Design optimization and efficiency modeling of a hot gas vane motor
(University of Missouri--Columbia, 2007)The purpose of this research is to model and analyze the dynamics of a hot gas vane motor for design optimization work. The pneumatic motor is a portable direct drive actuator that is intended as an alternative to ... -
Estimation of model states for a hydraulic valve system using an extended Kalman filter
(University of Missouri--Columbia, 2017)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Pilot valves are considered as one of most common types of valves in the industry today. They are widely-used because their design is simple, they are ... -
Force control of a hydraulic servo system
(University of Missouri--Columbia, 2009)The objective of this thesis is to model a hydraulic servo system using force control and then improve upon the performance of the model/system through feedback control design. The hydraulic system is first constructed and ... -
Hydraulic efficiency of a hydrostatic transmission with a variable displacement pump and motor
(University of Missouri--Columbia, 2012)Pumps and motors are commonly connected hydraulically to create hydrostatic drives, also known as hydrostatic transmissions. A typical hydrostatic transmission consists of a variable displacement pump and a fixed displacement ... -
A mathematical relationship between palpation forces and displacement associated with restriction
(University of Missouri--Columbia, 2018)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] A numerical model was developed based on clinical data that describes osteopathic clinician palpation forces and displacement. The model delivers an ... -
Modeling and control of arterial oxygen saturation in premature infants
(University of Missouri--Columbia, 2011)In this work modeling and control of neonatal infant's blood oxygen saturation (SpO2) is investigated. Through analyzing the biological system, it was shown that the blood is oxygenated through the mechanisms of ventilation, ... -
Modeling, design and control of forced-feedback metering poppet valve system
(University of Missouri--Columbia, 2006)This research explores valve design, dynamic modeling, and techniques to achieve flow control for a forced-feedback metering poppet valve system. In particular, nonlinear and linear models of a forced feedback configuration ... -
Modeling, simulation, and stability of a hydraulic load-sensing pump system with investigation of a hard nonlinearity in the pump displacement control system
(University of Missouri--Columbia, 2014)Certain types of Load-Sensing (LS) pumps utilize a hydro-mechanical control system designed to regulate the pressure difference, or margin pressure, between the inlet and outlet of a flow control valve. With a constant ... -
Modern control design for a variable displacement hydraulic pump
(University of Missouri--Columbia, 2006)In this work modern control methods are used to design and analyze control methods for a variable-displacement hydraulic pump. More accurate uncertainty descriptions are derived by using a structured uncertainty model as ... -
Mu-synthesis controller design for temperature control of a solar steam gasifier with uncertainty modeling and robust analysis
(University of Missouri--Columbia, 2015)Gasifiers operate by inputting a carbon rich material, water, and heat into a reactor core to cause a chemical reaction to produce a desired chemical composition output. For this work, a unique hybrid allothermal/autothermal ... -
New tool design for measuring tool displacement in milling
(University of Missouri--Columbia, 2012)Monitoring tool displacement during a milling process allows the operator to identify when there is relative movement between the cutting tool and the workpiece. When the relative movement between the cutting tool and the ... -
Parameterized uncertainty model using a genetic algorithm with application to an electro-hydraulic valve control system.
(University of Missouri--Columbia, 2016)Uncertainties in the mechanical system severely increase the complexity of the system. Present the uncertainties can be parameterized by listing the coefficient from the transfer function. The attempt to reduce the ... -
Parameterized uncertainty modeling applied to the oxygen control of neonates with lung disease
(University of Missouri--Columbia, 2018)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Premature infants born in a hospital's Neonatal Intensive Care Unit (NICU) commonly have underdeveloped lungs which is a cause of Respiratory Distress ... -
Polynomial system identification modeling and adaptive model predictive control of arterial oxygen saturation in premature infants
(University of Missouri--Columbia, 2020)The automation of the regulation of the fraction of inspired oxygen (FiO2) in neonatal mechanical ventilation to treat respiratory distress syndrome has proven challenging due to competing objectives: maintaining arterial ... -
Robust control design for a proportional valve with backlash compensation
(University of Missouri--Columbia, 2013)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] In this work, a linear technique is used to study the stability of a nonlinear system. Most of dynamic systems in industrial and fluid power systems ...