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 403 for “"Control techniques"”.
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Improved error control techniques for data transmission
Error control coding is frequently used to minimise the errors which occur naturally in the transmission and storage of digital data. Many methods for decoding such codes already exist. The choice falls mainly into two areas: hard-decision algebraic decoding, a computationally-efficient method, and …
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Design and control techniques of optical networks
… as well as at network level. In particular the techniques discussed are thought to be implemented for a long-haul transport network that connects local and metropolitan networks around the world. The main issues faced are contention resolution in a asynchronous variable packet length …
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Digital Control Techniques for Switching Power Converters
Digital control methods for switching power converters offer greater robustness, more flexibility to changing operating characteristics, and better system performance than conventional techniques, which are often model-limited and only work well in a small range of conditions. Digital controllers …
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High Performance Digital Control Techniques for Powering Microprocessors
… today and in the future. Digital power control architectures in which processors closely interact with voltage regulators are becoming necessary to enhance system energy efficiency. Digital techniques offer advantages such as flexibility, fewer external components and reduced overall …
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Guidance, Navigation, and Control Techniques for Service Robotics
L'abstract è presente nell'allegato / the abstract is in the attachment
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Advanced control techniques for modern inertia based inverters
… research three artificial intelligent (AI)-based techniques are proposed to regulate the voltage and frequency of a grid-connected inverter. The increase in the penetration of renewable energy sources (RESs) into the power grid has led to the increase in the penetration of fast-responding …
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Digital Control Techniques for High Fidelity Haptic Simulation Systems
Haptic simulation systems allow human users to kinesthetically interact with virtual environment models through a robotic mechanism known as a haptic interface. The sampled-data nature of haptic interfaces limits the range of virtual environment dynamics that can be stably rendered in a haptic …
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Switching Power Converters - Advanced Design Methodologies and Control Techniques
L'abstract è presente nell'allegato / the abstract is in the attachment
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Modelling and predictive control techniques for building heating systems
Model predictive control (MPC) has often been referred to in literature as a potential method for more efficient control of building heating systems. Though a significant performance improvement can be achieved with an MPC strategy, the complexity introduced to the commissioning of the system is …
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Application of modern control techniques to a distillation column
Modern control techniques have been applied to a distillation column. Three control techniques were selected for evaluation. These are; a decoupling and disturbance rejection control scheme; an estimator aided control techniques using a Kalman filter; and an implicit generalised minimum variance …
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Time-based control techniques for integrated DC-DC conversion
Time-based control techniques for the design of high switching frequency buck converters are presented. Using time as the processing variable, the proposed controller operates with CMOS-level digital-like signals but without adding any quantization error. A ring oscillator is used as an integrator …
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Subthreshold leakage control techniques for low power digital circuits
… of total power dissipation. As a result, new techniques are needed in order to provide high performance and low power circuit operation. This dissertation develops new circuit techniques that exploit dual threshold voltages and body biasing in order to reduce subthreshold leakage currents in …
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Agile flight control techniques for a fixed-wing aircraft
… mission objectives, the need for agility controlled flight becomes more of a necessity. The ability to navigate through constrained environments as well as quickly maneuver to each mission target is essential. Currently, individual vehicles are developed with a particular mission …
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Time average feedforward control techniques for time varying systems
… have been successfully applied in the active control of sound and vibrations~ Current approaches, such as the Filtered-X Least Mean Square algorithm, are limited in adaptability and applicability by the computationally intensive system identification process. The Time Average approach is a …
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Advanced control techniques and sensors for gas engines with NSCR
… (NSCR) catalyst system requires complex fuel control strategies. The allowable equivalence ratio operating range is very narrow where NSCR systems achieve simultaneous reduction of Carbon Monoxide (CO), Nitrogen Oxides (NOx), Total Hydrocarbons (THC), Volatile Organic Compounds (VOC's), and …
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Applying cooperative control techniques to improve performance of wind farms
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Integrated Technologies and Control Techniques for Trapped Ion Array Architectures
… these arrays increases, the required density of control systems may become intractable with current methods. In this thesis, we explore the integration of classical control technologies into ion traps and investigate whether this can provide the level of control needed to establish the array …
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Analysis of airspace traffic structure and air traffic control techniques
Air traffic controller cognitive processes are a limiting factor in providing safe and efficient flow of traffic. Therefore, there has been work in understanding the factors that drive controllers decision-making processes. Prior work has identified that the airspace structure, defined by the …
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Statistical quality control techniques using multilevel discrete product quality measures
Statistical quality control is the application of statistical methods to problems for which it is of interest to evaluate, establish, or verify the quality of a product. The two basic areas of statistical quality control that have received both the greatest attention in the literature and the …
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