Thesis ( Ph.D. ) -- University of Texas at Arlington, 2008.

Thesis (Ph. D.)--University of Washington, 1995. / Vita. Includes bibliographical references (leaves [133]-136).

M.Ing. / The induction machine is being widely implemented in motor control systems. Frequently not all the parameters of a system, which consists of an induction machine, an inverter, a load and a controller, are known. As the response of an induction machine is very sensitive to changes in these parameters, it is important to be able to design a control system that is independent of any parameter changes. In the past years, many control techniques have been developed for speed control of machine drives. The use of intelligent controllers has also recently been proposed to improve the response of the induction machine drive. With a fuzzy controller, we will try to eliminate as much as possible the effects of parameter variations that influence the response of the drive system. Since the fuzzy controller design is independent of the dynamic drive system model, the performance of the fuzzy controller is insensitive to any parameter changes. The fuzzy controller replaces the proportional- and integral controller (PI-controller) to determine the slip in a slip controller. The system for which the fuzzy controller is being investigated for implementation, is a battery operated wheelchair using two three phase cage rotor induction machines. These small; low voltage machines show strong parameter variations, making conventional control difficult. The fuzzy logic controller was investigated and the response compared with that of the PI-controller. The results indicated that at high rotor speeds the response of the fuzzy control strategy was favourable, but at low speeds ineffective. By modifying the fuzzy control strategy the rotor speed response can be optimised over the total speed zone.

Thesis (Ph. D.)--Ohio State University, 2003 / Title from first page of pdf. Document formatted into pages; contains xvii, 116 p.; also contains graphics (some col.). Includes bibliographical references (p. 11-3116). Available online via OhioLINK's ETD Center.

Thesis (Ph. D.)--University of Washington, 1999. / Vita. Includes bibliographical references (leaves 131-138).

See Volume 1 for Abstract / GR2017

The need for sensor-based automatic motion planning and control of industrial robots in an unstructured environment is extensive. For example in-factory transportation, household chores, military applications, chemical, radioactive, and other applications dangerous to humans. Researchers are attempting to build systems capable of generating purposeful motion in highly uncertain co-nplex environments, using on-line information from robot sensors. An example of such a task would be moving a mobile robot or a manipulator arm from its starting position to a goal position in a scene with unknown arbitrarily shaped obstacles. Carrying out such tasks requires, first, sensors and related / GR2017

The research object of this work is to investigate implementation of ERF in manipulators drive systems and independent actuation of manipulator elements by one actuator – electrorheological fluid. In order to achieve these goals the following issues has to be considered in this work: theoretical and experimental investigation on ERF working modes in array and planar manipulators drives; development of principal design schemes of manipulator drive based on ERF; design and analysis of dynamic models of array and planar manipulators drives; research on advantages and disadvantages of using controllable fluids in thin layers of electrodes of manipulator drives.

Thesis (M.S.)--University of Wisconsin--Madison, 1967. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Includes bibliographical references. / by Charles Edward Harm. / M.S.