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 23 for “"Non-linear control"”.
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Kalman filter non-linear control law for a gyroscope pulse width modulation torque loop
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Neural network enhanced self tuning adaptive control application for non-linear control of dynamic systems
… concerns the study of neutral networks to control uncertain and non-linear control systems. This involves the control of continuous time, discrete time, hybrid and stochastic systems with input, state or output constraints by ensuring good performances. A great part of this project is …
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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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Non-linear digital control of a McKibben muscle system
… better understand and improve the closed - loop control of these pneumatic muscles, a physical joint model was constructed with an agonist and an antagonist muscle operating under non-linear control. With the use of LabVIEW software, compliant McKibben air muscles and Flock-of-Birds sensor, the …
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Understanding asynchronous code
… because the language's idioms rely heavily on non-linear control flow via function pointers. The aim of this work is to create a debugging interface that helps users understand complicated control flow in languages like JavaScript. This thesis presents a programming editor extension called …
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An Autonomous Underwater Vehicle for Validating Internal Actuator Control Strategies
… not rely on the relative fluid motion to exert control moments, therefore they are useful at low speed and in hover. This paper describes the design, fabrication and testing of one such autonomously controlled, internally actuated underwater vehicle. The Internally Actuated, Modular Bodied, …
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Designing Reactive Power Control Rules for Smart Inverters using Machine Learning
… IEEE 1547 standard, smart inverters can actively control their reactive power injection to minimize voltage deviations and power losses in the grid. Reactive power control and globally optimal inverter coordination in real-time is computationally and communication-wise demanding, whereas the local …
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Estimation Based Adaptive Controllers for Microgrid Connected Boost Converters
… them with traditional generation systems. Nonetheless, the stability of these can be compromised under the presence of Constant Power Load (CPL) behavior, given by tightly regulated converters connecting AC and DC loads to a DC bus. This thesis presents an innovative nonlinear estimator …
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High performance on-line control of three-phase PWM current-source converters
… gating signals and (b) the complexity of the control schemes for medium and high power applications. This thesis provides solutions to these problems. It proposes two enhanced on-line modulating techniques and three control schemes for three-phase six-switch current-source topologies, namely: …
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Smart control architecture for microgrid application
<p>"This research proposes non-linear control architectures dedicated towards improving transient response, reliability and computational burden for grid connected inverters applicable for ac micro-grids. Also this work proposes an optimization procedure applied to a small microgrid to reduce the …
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Learning and Control of Network Phenomena
… that this thesis considers span the learning and control of network phenomena via graph matrices: learning structural correspondences across correlated networks; identification of unknown networked dynamical systems with known control inputs; the generalization performance of machine learning …
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Digital geometric-sequence control technique for bidirectional dual active bridge DC-DC converters used in future electric vehicles
… for future EVs. Generally, there are two control loops used for bidirectional DC-DC converters: The inner current loop and The outer loop. The control of DAB converters used in EVs are proved to be challenging due to the wide range of operating conditions and non-linear behavior of the …
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Modeling, estimation and control for serial flexible robot arms
… capabilities, sensing capabilities and control theory during the past couple of decades can potentially solve the perceived problems with flexible serial manipulators. In general, there is no such thing as a fully rigid manipulator: even current industrial robots exhibit small …
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Motion-Based Slide Correction Controller for Autonomous Vehicles
… successfully deployed robust sliding stability control systems. However, the rapidly expanding and heterogeneous field of wheeled robotics lacks an equivalent, standardised solution for managing slides. Existing methods are often model-dependent, requiring extensive, platform-specific …
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Kalman filtering techniques applied to the dynamic ship positioning problem
… are discussed. The ship dynamics, based on a linearised model, are represented by state equations. These equations involve low and high frequency subsystems. A simplified design procedure for the implementation of a Kalman filter is described based on the linearised equations of motion. The …
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Improvement of semi-active control suspensions based on gain-scheduling control
This study presents the development of a non-linear control strategy for a semi-active suspension controller using a gain-scheduling structure controller. The aim of the study is to overcome the constraints of conventional control strategies and improve semi-active suspension to achieve performance …
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Path planning for image based visual servoing
… geometry, image processing, robotics and non-linear control. More specifically the work addresses the problem to control a robotic manipulator through one of the largely used Visual Servoing techniques: the Image Based Visual Servoing (IBVS). In Image Based Visual Servoing the robot is …
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Microcontroller (MCU) Based Simplified Optimal Trajectory Control (SOTC) for High-Frequency LLC Resonant Converters
… frequency higher continues. However, the control characteristics of the LLC resonant converter are much more complex than that of the PWM converter due to the dynamics of the resonant tank. This paper employs state-trajectory analysis to describe and analyze the behavior of the resonant …
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