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 99 for “"position control"”.
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Relative Position Control for Satellite Formation Flying
… formation flying is a field where the relative positions between two or more satellites are tightly controlled. It is a relevant and growing field that enables missions that otherwise might not be achievable using a single monolithic satellite. This thesis focuses on designing and evaluating …
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Online position control system using incremental fuzzy control
In the field of fuzzy control theory, fuzzy logic controllers is one of the most active research areas and are particularly useful in controlling various types of physical processes. Therefore, this project also involved in usage of the fuzzy logic controller. Main objective of this project is to …
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Position control of a quadrotor using limited information
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Rover manipulator position control and coring feasibility evaluation
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Plasma position control in a Tokamak experimental power reactor
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Nuclear Engineering.
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Position Control Comparison of Equilibrated and Mass Counterweight Systems
… mechanisms, there has not much research on the control of these mechanisms. This thesis explores the PID control of equilibrated systems, and compares the results to the PID control of a common method of equilibration, the mass counterweight. Through modeling, simulating, and testing of the two …
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Digital speed and position control system incorporating an Incremental encoder
… a wide range of powers and speeds. The ease of control and excellent performance of the DC motors will ensure that the number of applications using them will continue grow for the foreseeable future. This project focuson DC motor functional applications in term of speed control and position …
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Hybrid force and position control of a manipulator with an elastic link
This thesis describes the hybrid force and position control of an elastic manipulator constrained by a surface. Based on the inverse and predictive control techniques, the proposed controller minimizes a quadratic function of contact force error, tip tracking error, elastic deflection, and control …
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Plasma position control in the STOR-M tokamak : a fuzzy logic approach
Adequate control of the position of the plasma column within the STOR-M tokamak is a chief requirement in order for experimental quality discharges to be obtained. Optimal control over tokamak discharge parameters, including the plasma position, is very difficult to achieve. This is due in large …
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The application of laser doppler technique to vibration measurement and position control.
… with a part of the original laser output in a controlled manner. A phase quadrature method was used to identify the direction of the target. This differs from the more usual method of frequency offsetting in requiring only passive optical components and therefore being considerably cheaper. …
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Heat transfer to and position control of electrodynamically suspended micron-sized particles
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1985.
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High-precision position control of a heavy-lift manipulator in a dynamic environment
This thesis considers the control of a heavy-lift serial manipulator operating on the deck of a large ocean vessel. This application presents a unique challenge for high- precision control because the system must contend with both high levels of joint friction and oscillatory motions in the …
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Path planning and position control and of an underactued [sic] electromagnetic formation flight satellite system in the near field
… produce relative (internal) forces in order to control the relative position and orientation of the spacecraft. This thesis demonstrates the ability to experimentally generate the relative internal electromagnetic forces in a short duration full 6DOF environment. Next the thesis limits itself to …
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Position control and vibration suppression of a flexible beam-like structure cantilevered from a rotary actuator within a gravitational field
… and experimental investigation into the position and vibration control of beam-like structures within a gravity field using only root actuation was performed. Two methods were used to linearize the system's equations of motion. This, in turn, allowed for the use of powerful Modern Control …
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Applications of adaptive controllers based on nonlinear parametrization to level control of feedwater heater and position control of magnetic bearing systems
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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The design and application of servo systems using stepper motors
Position control systems have for many years been essentially analogue in nature. Developments in stepper motors and semiconductor techniques have resulted in digitisation being possible. This thesis describes the stepper motor, its performance, and its application to position control systems in …
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Axially force limited grinding spindle for robotic grinding
… and polishing process is best done using a force-control scheme, which human hands perform naturally. Heavy robotic arms, which favor a position-control scheme, are difficult to control precisely, and trajectory errors can cause excessive grinding force which leads to burning of the part or …
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Lunar descent using sequential engine shutdown
… continuously throttleable engine. Downrange position control is provided by properly timed engine shutdowns. The principle advantage offered is the potential cost savings that would result from the elimination of the development cost of a throttleable rocket engine. Past lunar landing efforts …
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Implementation of a hierarchical open architecture multiprocessor computer numerical controller
… (ROAM) implementation of a computer numerical controller (CNC) is presented. An advanced control system consisting of a hierarchy of independent buses is developed and tested for the purposes of providing unattended intelligent machining systems. Loosely coupled subsystems, which handle process …
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