Thesis (Ph. D.)--University of Florida, 1983. / Description based on print version record. Typescript. Vita.

Thesis (M.S.)--University of Wisconsin--Madison, 1983. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 154-156).

M.Ing. / This study describes a new class of mechanism to provide leg like motion, for use in a new type of walking machine, that is larger and simpler than electromechanical machines that are currently available. The mechanism is located in a historic context, and current technology in this area is reviewed. The problem of calculating the geometry of the complex mechanism is solved using an innovative solution based on coordinate geometry, which may be extended to solve other planar mechanisms of either greater or lesser complexity. All assumptions have been detailed. The analysis covers both the motion and the power requirements required to make the mechanism move. Structural aspects, which may affect any practical walking machine, are covered. A software implementation has been developed, providing output to demonstrate that the model developed reflects reality, within the limits of the assumptions made.

Among various non-smooth dynamic systems, the periodically forced oscillation system with impact is perhaps the most common in engineering applications. Usually it has an oscillator with fixed or unfixed stops. The dynamics becomes complicate due to the impact against the stops. Sometimes it leads to bifurcation and even turns to chaos. Its present applications include MEMS switch device, escapement in watch movement and so on. / As a branch of mechanics, the multi-body dynamic system is well-studied. In particular, the non-smooth dynamical system attracts many researchers because of its importance and diversity. The main behaviours of such a system include contact (slip-stick motion), friction and impact. Although various models have been developed for these behaviours and their results are often satisfactory, the truth is that they are still far from completion. In the past twenty some years, various new methods have been developed. However, none of them is universally applicable. One of the difficulties is that there are a number of explicit discontinuities, such as: (a) Coulomb friction gives a discontinuous law for the forces as a function of velocities, and (b) The contact conditions give forces that are not only discontinuous in position, but also unbounded and give rise to discontinuities in the velocities. / This thesis presents a systematic study on the periodically forced oscillation system with impact. Various existing methods are discussed and compared. In particular, impulsive differential equation, Poincare map and perturbation theory are applied. Two practical cases are included: a first-order system and the Swiss lever escapement mechanism. The latter has significant engineering value as the Swiss level escapement is the key component of mechanical watch movement. The precision dynamic model has very high numerical accuracy in describing/predicting their dynamics. The research helps to optimize the design of a commercial product. The model is validated by means of experiment. / Fu, Yu. / Adviser: Du Ruxu. / Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3745. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 137-142). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in English and Chinese. / School code: 1307.

Tam, Lam Chi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 85-88). / Abstracts in English and Chinese. / Chapter 1. --- Introduction --- p.1 / Chapter 1.1. --- Background --- p.1 / Chapter 1.2. --- Objectives --- p.5 / Chapter 2. --- Literature Survey --- p.7 / Chapter 2.1. --- Existing Virtual Libraries --- p.7 / Chapter 2.2. --- Challenges --- p.13 / Chapter 3. --- Virtual Library of Mechanical Timepieces --- p.15 / Chapter 3.1. --- Structure of the Virtual Library --- p.16 / Chapter 3.2. --- Mechanical Clock Escapements --- p.19 / Chapter 3.2.1. --- Graham Escapement --- p.19 / Chapter 3.3. --- Mechanical Watch Escapements --- p.21 / Chapter 3.3.1. --- English Lever Escapement --- p.21 / Chapter 3.3.2. --- Swiss Lever Escapement --- p.24 / Chapter 3.3.3. --- Daniels Co-Axial Double-Wheel Escapement --- p.26 / Chapter 3.3.4. --- Spring Detent Escapement --- p.31 / Chapter 3.3.5. --- Cylinder Escapement --- p.35 / Chapter 3.3.6. --- Verge Escapement --- p.41 / Chapter 3.4. --- Accessories --- p.46 / Chapter 3.4.1. --- Automatic Winding System --- p.46 / Chapter 3.4.2. --- Moon Phase Mechanism --- p.65 / Chapter 3.5. --- Chapter Summary --- p.71 / Chapter 4. --- Implementations --- p.73 / Chapter 4.1. --- CAD Modeling of the Escapement Structure --- p.73 / Chapter 4.2. --- Website Design --- p.78 / Chapter 4.3. --- An Application --- p.79 / Chapter 5. --- Conclusions --- p.82 / References --- p.85 / Appendix A --- p.89 / Appendix B --- p.101

Thesis (M.S.)--Brigham Young University. Dept. of Mechanical Engineering, 2005. / Includes bibliographical references (p. 47-50).

University of Macau / Faculty of Science and Technology / Department of Electromechanical Engineering

Thesis (Ph. D.)--Brigham Young University. Dept. of Mechanical Engineering, 2003. / Includes bibliographical references (p. 151-156).

Thesis (M.S.)--Brigham Young University. Dept. of Mechanical Engineering, 2003. / Includes bibliographical references (p. 109-110).

Thesis (M.S.)--Brigham Young University. Dept. of Mechanical Engineering, 2003. / Includes bibliographical references (p. 53-56).