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 31 for “"Noise immunity"”.
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Embedded Sensing System for Whispering-Gallery-Mode Optical Resonators
… Third, we report a sensing model with high noise immunity using machine learning algorithm for WGM mode shift sensing. Furthermore, an artificial intelligence at the edge embedded device is designed for real-time inference of sensing results which is running the pre-trained neural network …
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Designing Low -Power Communication Systems via Noise-Tolerance
… the energy-efficiency bounds for domino and noise-tolerant dynamic circuits, and demonstrate that noise-tolerant techniques improve the energy-efficiency when operating at the lower bound. Furthermore, we show that the gap between the lower bounds and the actual energy dissipation is reduced …
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A Microprocessor Based Tongue Contact Palatometer.
… to be costly, difficult to calibrate, subject to noise, and large in size. This thesis documents a system based on the RCA 1802 COSMAC microcomputer, which has the advantages of small size, ease of calibration, high noise immunity, and relatively low cost.
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Fiber optic techniques for remote sensing
… both high sensitivity and electromagnetic noise immunity has prompted the development of sensing systems based on optical fiber technology. This presentation opens with a short review of fiber optic sensing methods, including a discussion of several devices developed in prominent …
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The measurement of flow velocity distribution
… deconvolution is shown in this case to have poor noise immunity. For this reason, an alternative method of Bayesian deconvolution is investigated. The correlation functions measured from the experimental flow rig are deconvolved using the Bayesian deconvolution algorithm. The resulting transit …
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Development of a Modular Electromyography System
… EMG system must account for several sources of noise that can be orders of magnitude larger than the EMG signal itself. The goal of this work was to design an active EMG electrode that could be used as bipolar electrodes or in an electrode array. Two electrodes were designed and tested. One …
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Application of cepstral techniques to the automated determination of the sound power absorption coefficient
… to excite the system. It was chosen for its high noise immunity, as well as its complete odd-order non-linearity immunity. Sources of uncertainties from the links of the measurement chain are considered and methods to overcome them are presented. Issues that arise from liftering - cepstral …
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Space-variant incoherent optical processing using color
… optical processing techniques offer superior noise immunity, among other benefits, over coherent optical processing techniques. However, the complex amplitude linearity exhibited by coherent optical systems that provides a natural means for performing operations on complex functions, is …
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The classification of acoustic emission signals via artificial neural network
… accuracy, classification efficiency, noise immunity, and generalization capability.
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Adaptive Control of a Step-Up Full-Bridge DC-DC Converter for Variable Low Input Voltage Applications
… an expensive current sensor, yet providing the noise immunity seen in voltage mode controllers. The intended input source was a fuel cell but in its absence a DC supply is utilized instead. The system is simulated for both discontinuous and continuous conduction modes and implemented and …
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High Voltage Pulse Measurement System
<p>Using isolation and noise immunity techniques, this thesis designs and constructs a low cost measurement system to safely and accurately measure high voltage, high frequency pulses in harsh EM environments. High voltage pulses apply to medical, plasma, and food industries. The difficulty of …
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The application of time encoded signals to automated machine condition classification using neural networks
… programmed techniques both in terms of greater noise immunity and in the reduced requirement for highly skilled operators. The practical advantages accrued by using these networks are studied together with some of the problems associated in their use within safety critical monitoring …
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Study of Current Optocoupler Techniques and Applications for Isolation of Sensing and Control Signals in DC-DC Converters
… benchmark lacks the robustness of speed, noise immunity, and easy implementation to compete with current workhorse technologies like transformers. The linearity of transmitted analog signals, transmission speed of digital control signals, and the maximum allowable voltage between power …
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Study on Zero Crossing Detection in CRM Totem-pole PFC Converter
… zero-crossing detection are detection delay and noise immunity. A delay in turning off the synchronous switch due to ZCD delay results in a large negative current and an overall increase in ripple current, reducing efficiency. ZCD delay is also variable, as it depends on the operating point, …
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Power Management Schemes for Ultra Low Power Biomedical Devices
… of the keeper transistor increases the device noise immunity. This combination of supply and threshold voltage scaling techniques offers a further reduction in the overall device power dissipation and enhances reliability without degrading circuit speed. A power reduction of 23% to 31% is …
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Non-linear identification, estimation and control of automotive powertrains
… system efficiency may be impaired by the system noise and the model uncertainty. For that reason the model-based estimation techniques are very important. It is demonstrated that not only the noise immunity, but also robustness is significantly improved when Kalman filtering methods are employed. …
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Differentially fed active antennas
… preferred choice in RFIC design due to its good noise immunity and low distortion characteristics. But it is observed that single ended PAs and LNAs are used for the feeding part because of the antenna industry’s tendency to stick to conventional 50Ω interface. Therefore, differentially fed …
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Improvements to the alignment process in electron-beam lithography
… improvements to the attainable accuracy and noise immunity of alignment. It is well known that the marker pattern used in correlation based alignment has a strong influence on the magnitude of the improvements that can be realised. There has, to date, however, been no analytical study of how …
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High power wide bandgap cascode switching circuits
… the switching speed, gate characteristics and noise immunity of devices, at the expense of greater on-state resistance. WBG cascodes have not, however, been widely accepted in commercial applications. Previous research has typically been too application-specific, with little practical …
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Derivation of Parabolic Current Control with High Precision, Fast Convergence and Extended Voltage Control Application
… decreases the cost of system and enhances the noise immunity capability. Single-step current control pushes the convergence speed to one switching operation with simple implementation. High switching frequency is allowed and power density can be improved. Detailed analysis, motivation and …
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