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 20 of 24 for “"Control circuits"”.
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Synthetic analog feedback control circuits in living cells
… for designing functional synthetic biological circuits. However, most models are based on a deterministic digital framework that is largely incompatible with nonlinear dynamics, stochastics, high-order feedback, cross talk, loading, and resource consumption in biology. In contrast, analog …
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Digital communication and control circuits for 60ghz fully integrated CMOS digital radio
… bus running all through the chip. The SPI host controller emulates an embedded protocol analyzer. For calibration and fine tuning purposes, digital settings can also be loaded onto these modules through the SPI interface. R-2R DACs are used to convert these commands into analog voltages which …
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Energy efficient control for power management circuits operating from nano-watts to watts
… in today's power electronics. All power delivery circuits, irrespective of the magnitude of power, basically consists of power trains, gate drivers and control circuits. Although the control circuits are primarily required for regulation, these circuits can play a crucial role in achieving high …
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NeuroModular - A Modular Backend for Fiber-Based Wireless Bioelectronic Interfaces
… a modular, versatile, and miniature wireless control platform that supports an array of capabilities in multifunctional fibers. The device is designed with two sub-circuits, the primary module circuit, and multiple fiber control circuits. The primary module circuit communicates with a …
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Investigation of Ultra-Low Power CMOS GHz Circulator
… with only a few to hundreds of qubits. CMOS circuits are candidates for readout and control circuits for a practical quantum computer for their compactness and scalability. Especially, building CMOS readout and control circuits at cryogenic temperatures can reduce power loss at the interface …
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Chopper stabilization in analog multipliers
… such as filters, neural networks, automatic gain control circuits, and phase alignment systems. As with any circuit, analog multipliers are plagued by DC offsets. When considering techniques for removing this offset, the question of continuous regulation versus calibration arises. We can easily …
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Modeling of Integrated Voltage Regulator Power delivery systems
… voltages), loads, power semiconductors, and control circuits. Behavioural analysis, prior to prototyping, of such complex is possible only by suitable simulations. This thesis aims to study the the design and construction of a combined IVR and LDO system model using Simulink and MATLAB.
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Exploration and Design of a Magnetic Levitation System
… is then designed and built, featuring custom control circuits, driver and mechanical fixture. This setup is able to achieve levitation indefinitely and handle light disturbance coming from the user. There are a couple extensions to the project that can be explored, including improvement in …
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Fully Integrated Data and Power Transfer Systems with Galvanic Isolation
… galvanic isolation. Autonomous sensors and/or control circuits, typically require a few tens of Mbps for data communication and an output power from tens to hundreds of mW. In this context, fully integrated interfaces can provide several advantages, including higher reliability, lower PCB area, …
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Engineering external heart assist device
… a triggering signal and to activate a series of controls either in a sequential or singular fashion. The system also comprises a pulse frequency counter and a safety shut- off control circuits. A portable pressure-vacuum supply system and a pressure pulsating mechanism comprise the work done in …
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CorMem digital reasoning architecture using CMOS Technology
… memory-based approach for building digital circuits. To reflect the alternative approach, the basic science is termed digital reasoning and the specific CorMem technology is based on recent patents. CMOS transistors are used in a non-traditional way for multi-level operations and memory …
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A computational framework to study neural-structural interactions in human walking
… approach by elucidating high- level cortical control circuits. In contrast, biomechanists prefer to focus on structural and mechanical aspects of the legged movement apparatus. We posit that studying interplay between neural co-ordination and legged biomechanics can yield crucial insight into …
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Enhanced next generation alternator
… on experimental measurements, and new field control circuits are proposed that provide fast field de-excitation.
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Energy Harvesting Circuit for Indoor Light based on the FOCV Method with an Adaptive Fraction Approach
… energy is abundant and stable. The designed circuits are intended to power wireless sensor nodes (WSNs) or other computing unit such as microcontrollers or DSPs to provide a power solution for Internet of Things (IoTs). The proposed circuit can extract maximum power from the PV panel by …
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A New Digital Relay for Dispersed Storage and generation (DSG) Units
… may induce undesirable transients in neighoring circuits (low power and control circuits being particularly vulnerable) on the connected network. It can create harmonics that can fail surge arrestors or cause transformer saturation. The new relay will be able to detect this condition at the …
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The application of communication principles to pulse-width modulated inverters
… thyristor pulse-width modulated inverter whose control circuits incorporate regular sampling techniques is described. A harmonic spectral analysis of the output voltage waveforms from the power inverter shows that the useable frequency range of the inverter is considerably increased by the …
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Neural network applications in the control of power electronic converters
… recently been made to apply Neural Networks to control systems where they are to deal with any modeling uncertainties that may exist. This thesis proposes the Neural Network controller as a viable alternative to the conventional and widely used PI regulator for the regulation of Power Electronic …
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Characterization and Modeling of 4H-SiC Low Voltage MOSFETs and Power MOSFETs
… integration of low voltage and high voltage circuits on SiC has profound applications. SiC power devices have proved their superiority in terms of high temperature operation, faster switching frequencies and larger power densities when compared with Si power devices. The control of SiC power …
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CRISPR-based Control of Biosynthetic Pathways and Genetic Biosensors, Informed by a Quantitative Investigation of Metabolic Burden
… heterologous expression requires engineered control systems to avoid overly burdening the host. Optimizing the genetic controllers of pathway enzymes, for example, achieves greater likelihood of acceptable balance between cost and production, avoiding reductions in growth rate, population …
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Characterizing and modeling methods for power converters
… frequency. In addition, a wide-band feedback controller is required to accommodate the high switching frequency in the converter. We focus on the characterization or modeling of the feedback control circuits and critical components in a switching power converter.</p><p>A …
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