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.
Results
Showing 1 to 20 of 36 for “"Trajectory Control"”.
-
Aerodynamic fuze characteristics for trajectory control
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1998.
-
Average frequency trajectory control : normal mode.
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 1976
-
Modeling of equilibrium point trajectory control in human arm movements
… (EPH) is that the CNS provides a virtual trajectory of joint motion, representing spacing and timing, with actual movement dynamics being produced by interactions of limb inertia, muscle viscosity and speed/position feedback from muscle spindles. To counter criticisms of the EPH, …
-
Implementation of GPS based trajectory control of an autonomous sailboat
… using a miniature robotic sailboat. GPS based trajectory control was implemented on this system to test the ability of the sailboat to travel to desired locations when placed in different starting positions. Ultimately, the sailboat was able to travel the desired 30 feet in the shortest amount …
-
Dynamic wind turbine wake trajectory control: Strategies and real-time validation
Wind farm control has demonstrated power production enhancements using yaw-based wake steering. However, slower yaw actuation rates compared to inflow change rate cause time-varying downstream-rotor-wake overlap conditions, diminishing its benefits. To accommodate for inflow variations, closed-loop …
-
Inverse and variable structure trajectory control of a flexible robotic manipulator
This thesis introduces two schemes that control the end effector trajectory and stabilize a two-link flexible robotic arm. They are (i) The Inverse Trajectory Control scheme and (ii) The Variable Structure System (VSS) scheme; The Inverse Trajectory Control scheme develops a control law based on …
-
Performance assessment of Mars entry systems with flap-based trajectory control
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-14 without embargo terms
-
Feasibility assessment of magnetohydrodynamics for hypersonic trajectory control for planetary exploration applications
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
-
Optimization of LLC Resonant Converters: State-trajectory Control and PCB based Magnetics
… in an off-line power supply and takes the most control responsibilities, so isolated DC/DC converter is the key aspect to improve the overall performance and reduce the total cost for off-line power supply. On the other hand, of all the power supplies for industrial applications, those for the …
-
Aerodynamic modeling and assessment of flaps for hypersonic trajectory control of blunt bodies
… to current state-of-the-art bank-angle steering control while introducing additional benefits during entry, descent, and landing. Flaps provide direct control of the vehicle’s lift and drag vectors, eliminating the need for a center of gravity offset and enabling a relatively constant vehicle …
-
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 …
-
Trajectory control of a wheeled robot using interaction forces for intuitive overground human-robot interaction
… Uncovering such a procedural framework for the control of robotic systems to execute expected performance simply from force and torque inputs would be the necessary first step in realizing human-like pHRI. As such, this research is motivated to develop a procedural framework that uses human …
-
Switching Trajectory Control for High Voltage Silicon Carbide Power Devices with Novel Active Gate Drivers
… theoretical analysis, a model-based switching trajectory optimizing three-level active gate driver (AGD) is proposed. The proposed AGD has five operation modes, i.e., faster/normal/slower for the turn-on process and slower/normal for the turn-off process. The availability of multiple operation …
-
Control and Modeling of High-Frequency Voltage Regulator Modules for Microprocessor Application
… module (VRM) challenges of high bandwidth control with fast transient response, high current output, simple implementation, and efficient 48V solution are tackled in this dissertation. With the push for control bandwidth to meet design specifications for microprocessor VRM with larger and …
-
Assessment of moving-mass actuators for hypersonic vehicles with deployable decelerators
… moving-mass actuator configuration options for trajectory control in the hypersonic regime of planetary entry. Trajectory control is achieved by shifting the location of the center of gravity relative to the center of pressure to modify aerodynamic trim conditions. The vehicle is modeled as a …
-
Estimation and control of flexible space structures for autonomous on-orbit assembly
… estimation of vibrational motion, and trajectory control for assembly of a space structure.
-
Deeply-towed underwater vehicle systems : a verified analytical procedure for creating parameterized dynamic models
… partial differential equations and as a result, trajectory control is generally difficult using the available techniques. This work examines the possibility of utilizing parametric dynamic models in differential equation form, to present a far more tractable controls problem. A learning-model …
-
Autonomous aerobatic maneuvering of miniature helicopters
… this thesis, I present an experimentally proven control methodology for the autonomous execution of aerobatic maneuvers with small-scale helicopters, and a low-order dynamic model which adequately describes a miniature helicopter in a wide range of flight conditions, including aerobatics. The …
-
Multiple-objective sensor management and optimisation
… This is achieved by modelling the observer trajectory control design as a probabilistic, information-theoretic, multiple-objective optimisation problem. This novel approach explores the relationships between the changes in sensor-target geometry that are induced by tracking performance …
Page 1 of 2