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 19 of 19 for “"Control modeling"”.
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Active combustion control : modeling, design and implementation
… vibration as well as structural damage. Active control is one approach using which such instabilities can be mitigated. Over the past five to ten years, it has been shown conclusively through several lab-scale studies that active control is highly successful in suppressing the pressure …
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Current-Mode Control: Modeling and its Digital Application
Due to unique characteristics, current-mode control architectures with different implementation approaches have been widely used in power converter design to achieve current sharing, AVP control, and light-load efficiency improvement. Therefore, an accurate model for current-mode control is …
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Optimal Control Modeling and Simulation, with Application to Cholera Dynamics
<p>The theory of optimal control, a modern extension of the calculus of variations. has found many applications in a wide range of scientific fields, particularly in epidemiology with respect to disease prevention and intervention. In this dissertation. we conduct optimal control modeling, …
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Robust adaptive control modeling of human arm movements subject to altered gravity and mechanical loads
… in ways that can be described by an adaptive control method. The investigation presented in this thesis includes two different sets of experiments. A series of dart throwing experiments took place onboard the space station Mir. Experiments also took place at the Biomechanics lab at MIT, where …
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Discrete event system modeling using SysML and model transformation
… is to introduce a unified framework for modeling and simulating discrete event logistics systems (DELS) by using a formal language, the System Modeling Language (SysML), for conceptual modeling and a corresponding methodology for translating the conceptual model into a simulation model. …
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Design And Implementation Of A Digital Controller With Dsp For Half-br
… speed improvement and cost reduction of digital control, digital controller is becoming a trend for DC-DC converters in addition to existed digital monitoring and management technology. In this thesis, digital control is investigated for DC-DC converters applications. To deeply understand the …
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Pressure loss prediction and control model for water treatment units
… treatment units design, power and pressure drops control modeling and simulations. Computer program software (compact pro) was developed to calculate the pressure losses in piping network and process equipment's. Results obtained for pressure drop unit length for different pipe diameters and …
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Modeling and theoretical design methods for directed self-assembly of thin film block copolymer systems
… self-assembly process to obtain greater control over long range order, the local morphology, and overall throughput of the patterns produced. This work looks at key modeling challenges in optimizing BCP DSA to achieve precision morphology control, reproducibility, and defect control. …
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Anodic Metal Dissolution In Haloaluminate Molten Salts/Ionic Liquids
… proceeds under mixed kinetic/mass-transport control. However, at larger positive overpotentials and correspondingly higher anodization rates, the reaction transitions to a mass transport-limited process governed by the dissolution of a passive layer of alcl3(s) and/or albr3(s) on the …
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Investigating the Effects of Modeling and Imagery on Psychological Factors in the Context of a Hypothetical Anterior Cruciate Ligament Injury
… The purpose of this study was to compare a modeling, an imagery, and a control group on psychological factors related to a hypothetical injury. Healthy athletes (N=86; M age = 22.06 years; SD = 4.37) who had no recent experience of an injury and had not experienced an ACL injury were …
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Implementation of a Hardware-in-the-Loop System Using Scale Model Hardware for Hybrid Electric Vehicle Development
… (HIL) testing and simulation for components and control strategies can reduce both time and cost of development. HIL testing focuses on one component or control system rather than the entire vehicle. The rest of the system is simulated by computer systems which use real time data acquisition …
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Modeling of V2 Control with Composite Capacitors and Average Current Mode Control
Various types of current mode control are being used in different applications. Model for current mode control is indispensable for proper system design. Since 1980s, modeling of current mode control has been a hot topic in power electronics field. In current mode control, sub-harmonic oscillation …
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Modeling and System Identification of Pneumatic Robot
… properties. However, they are quite difficult to control owing to their non linearity and high latency due to air’s compressability. One of the promising ways to make these actuators usable in advanced robotic tasks is to use model based control. Thus, this work is entirely focused to obtain a …
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Design and Control of a Cable-Driven Articulated Modular Snake Robot
This thesis presents the design and control of a cable-actuated mobile snake robot. The goal of this research is to reduce the size of snake robots and improve their locomotive efficiency by simultaneously actuating groups of links to fit optimized curvature profiles. The basic functional unit of …
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Heat Transfer and Consolidation Modeling of Fiber Tow in Fiber Placement
New heating techniques are required to better control heat transfer between heating tools and a composite towpreg in the automated fiber placement process. This dissertation suggests new heating techniques with liquid and rigid contact heat sources, and compares them with a widely used gas heat …
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The design and control of active ankle-foot orthoses
… CO2 bottle) and embedded electronics to control the motion of the foot. Experimental data from two impaired and five healthy subjects were collected to demonstrate design functionality. The impaired subjects had bilateral impairments to the lower legs that caused weakness to the …
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Turbo Charged Low Temperature Combustion - Experiments, Modeling and Control
… into developing more sophisticated engine control systems and improving engine combustion behavior and post-treatment systems. These efforts have resulted in significant reductions in NOx, CO, HC, and particulate matter emissions and further improvements can be expected. Emissions of the …
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Equivalent Circuit Model for Current Mode Controls and Its Extensions
Current-mode control architectures have been an indispensable technique in many applications, such as Voltage Regulator, Point-of-load converters, power factor correction, battery charger and LED driver. Since the inductor current ramp is used in the modulator in current-mode control without any …