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Thesis (Ph. D.)--Ohio State University, 2003. / Title from first page of PDF file. Document formatted into pages; contains xix, 222 p.; also includes graphics (some col.) Includes bibliographical references (p. 215-222). Available online via OhioLINK's ETD Center

Thesis (M. Phil.)--University of Hong Kong, 1992.

Thesis (MTech (Information Technology))--Cape Peninsula University of Technology, 2007 / The increasingly sedentary lifestyle of the past 30 years has contributed to declining health. Consequently, exercise is vital for good health maintenance. The global Health and Fitness Industry repeatedly indicates the need for optimally managed exercise with accurate information feedback. Compared to other industries, the fitness industry is lagging behind in incorporating Information Technology into its operations. On the other hand, the most current exercise equipment impose fixed-trajectory exercise on users with the dominance of static equipment designs. These exercise equipment are normally deadweight-based equipment. In deadweight-based exercise equipment, the weights generally can be changed only when the equipment is inactive. Therefore, a more novel exercise environment is required for current exercisers in the fitness industry. This thesis explores to develop a computer-controlled pneumatic dynamic resistance exercise equipment with onboard data management. This new technology optimises exercise effectiveness for users. Exercisers will have advanced diagnostic capacity, and will capture user data which can be manipulated into meaningful information for use by Health and Fitness Industry stakeholders. This thesis will explore all the key concepts about computer-controlled equipment. The key concepts to be investigated will include FX (force-displacement) control technology, pneumatic system control, fail-safe mechanics, and Graphical User Interface design. The primary aim of the project is to replicate and enhance the functionality, performance, and sensation of deadweight-based equipment. A further aim of the project is to investigate the feasibility of designing a compact retrofit-able pneumatic unit to replace the deadweights of existing standard exercise equipment. The computer control will be implemented on a "National Instruments PXI" computer featuring Data Acquisition and Control (DAQAC) capacity, and the software will be implemented using "LabVIEW 7.0', which is a graphic object-oriented computer language developed to facilitate hardware I software communications.

Traditional robots are made from hard materials like hard plastic or metal and consist of regular rigid mechanical parts. Using those parts has some limitations, like limited dexterity and lack of flexibility. Some of these limitations could be avoided through using a compliant material, because it has higher flexibility and dexterity. It is also safer to be in direct contact with humans. This thesis studies soft pneumatic manipulators (SPMs) that move in multi degrees of freedom (MDOF), which makes them able to perform various functions. The study will include designing, fabricating, and testing three different SPMs with different taper angles -- 0^0, 1^0, and 2^0 -- to measure the effect of varying this geometry on the achievable force by the end effector and the range of bending and elongation. Every single SPM consists of three soft pneumatic chambers to reach unlimited points on its workspace through implementing bending and elongating movements. There are a lot of applications for this kind of soft actuators, like rehabilitation, underwater utilizes, and robots for surgery and rescues. Most soft pneumatic actuators provide one kind of movement, for bending, twisting, or elongating. Combining more than one kind of movement in one soft pneumatic actuator provides considerable contributions to the body of research. The SPMs were controlled and tested to evaluate the achieved force and two kinds of movement, bending and elongating range. The results of each module has been compared with the others to determine which actuator has the best performance. Then a force controller was created to maintain the desired force that was achieved by the end effector. The results indicated that the optimal angle of the SPM was 2^0. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2018. / FAU Electronic Theses and Dissertations Collection

published_or_final_version / Mechanical Engineering / Master / Master of Philosophy

Call number: LD2668 .T4 1985 S648 / Master of Science

As válvulas de controle são os elementos finais da grande maioria das malhas de controle existentes na indústria. Além disso, sabe-se que o atrito pode causar variabilidade na malha em questão, o que geralmente é indesejável para o desempenho do processo. Ademais, cerca de 20 a 30% das oscilações nas malhas de controle são causadas por atrito ou histerese. Outro ponto relevante é que muitas vezes não é possível realizar a manutenção da válvula que esteja apresentando uma variabilidade considerável, já que muitas vezes não é desejado e nem possível parar o processo em questão para o reparo da válvula. Dessa forma, o estudo de métodos de compensação de atrito se faz necessário como uma maneira de melhorar o desempenho da malha de controle nesta situação até que seja feita a manutenção da planta industrial. Este trabalho apresenta controladores com compensação de atrito e analisa seu desempenho comparado com outros compensadores já conhecidos e amplamente utilizados, através de ensaios na Planta Piloto de Vazão da Escola Politécnica da Universidade de São Paulo. / The control valves are the final elements of most of the control loops in industry. Besides, the friction can cause variability in the process, which is an undesirable situation. Furthermore, about 20% to 30% of the oscillations in control loops are caused by friction or hysteresis. Another relevant fact is that much times it is not possible to make the maintenance of the valve that is under a considerable variability, because it is not desirable nor possible to stop the process to make the maintenance of the control valve. Thereby, studying friction compensation methods is necessary as a way to improve the control loop performance in this situation until the industrial plant maintenance is made. This dissertation presents controllers with friction compensation and analyzes its performances compared with other known and widely used compensators through experiments made at the Flow Pilot Plant of Polytechnic School of University of São Paulo.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING / Includes bibliographical references. / by Forrest T. Buzan. / M.S.

Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Book, Wayne; Committee Member: Lipkin, Harvey; Committee Member: Paredis, Christiaan