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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Design of cam profiles formed by elastic elements

Hiegel, James Edward 05 1900 (has links)
No description available.
2

An investigation of incipient jump in industrial cam follower systems

Belliveau, Kenneth D. January 2002 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: Cam follower -- dynamic modeling -- vibration -- follower jump. Includes bibliographical references (p. 98-102).
3

Computer method of determining cam profiles

Akcali, Ibrahim Deniz January 2010 (has links)
Digitized by Kansas Correctional Industries
4

Kinematisch-geometrische Untersuchungen über Hebedaumen und Excentriks

Schoenflies, Samuel Martin, January 1872 (has links)
Inaug.--Diss.--Göttingen. / Vita.
5

Vibration analysis of flexible cam-follower systems

Knight, Bernard Auston 05 1900 (has links)
No description available.
6

The transient response of a cam-and-follower system with uniformly varying frequency of excitation

Yu, Chen-Teh. January 1982 (has links)
Thesis (M.S.)--Ohio University, August, 1982. / Title from PDF t.p.
7

Kinematisch-geometrische Untersuchungen über Hebedaumen und Excentriks

Schoenflies, Samuel Martin, January 1872 (has links)
Inaug.--Diss.--Göttingen. / Vita.
8

The effect of damping on an optimally tuned dwell-rise-dwell cam designed by linear quadratic optimal control theory

Wahl, Eric J. January 1993 (has links)
Thesis (M.S.)--Ohio University, November, 1993. / Title from PDF t.p.
9

Complementary Herbal and Alternative Drugs in Clinical Practice

McCabe, Susan 01 January 2002 (has links)
TOPIC. Complementary and alternative medicine agents (CAMs). Purpose. To summarize the current empirical data about the major CAMs purporting to have psychotherapeutic value. Sources of information. Extant literature. Conclusions. Available evidence indicates that CAMs, while generally safe, are not risk free. While CAM use grows, nurses and other health professionals have a limited knowledge base about the action, side effects, and interactions of common CAM agents. Nurses need to increase their knowledge base about CAMs in order to help patients in decision making regarding the use of these agents to treat common psychiatric symptoms.
10

Compensação dinâmica em cames / Dinamically compensated cams

Gonçalves, Luiz Augusto Martin 03 January 2008 (has links)
Em um sistema came-seguidor a dinâmica do sistema seguidor faz com que o movimento final se desvie daquele especificado. Este efeito pode ser compensado considerando-se o modelo dinâmico inverso do sistema seguidor no projeto da lei de movimento do came. Considerando-se constante a velocidade do came, o sistema seguidor tem dinâmica linear. Entretanto, devido à razão de transmissão variável, e devido a outros efeitos não lineares, o sistema de acionamento como um todo é não linear, e procedimentos não lineares devem ser utilizados para se ajustar a lei de movimento do came. Uma análise teórica, suportada por simulações, mostra o potencial deste procedimento, ao menos no caso de uma dinâmica simples do sistema seguidor: uma considerável redução do erro de movimento, e uma boa robustez relativa a erros na freqüência de ressonância e razão de amortecimento estimadas. Experimentos com o acionamento por um servomotor sub-dimensionado, como é de se esperar, mostram resultados diferentes, devido à velocidade angular não constante. A flutuação observada na velocidade angular em torno do valor constante é então levada em consideração para o projeto da lei de movimento com nonlinear feedforward. / In a cam-follower system the dynamics of the follower-train mechanism cause an actual motion which deviates from the desired one. This effect can be compensated by taking into account the inverse dynamic model of the follower-train in the design of the cam motion law. By considering a constant cam velocity, the follower-train has linear dynamics. However, due to the varying transmission ratio, and due to other nonlinear effects, the whole drive train is a nonlinear system, and nonlinear procedures should be used to fit a motion law. A theoretical analysis with only the linear feed-forward compensation, supported by simulation results, has shown the potential of this approach, at least in the case of simple follower-train dynamics: a considerable reduction of the motion error, and a good robustness with respect to errors in the estimated resonance frequency and damping ratio of the follower-train. Experiments with a small driving servomotor, as expected, show differerit results, due to the non-constant angular velocity. The observed cam angular velocity ripple is then taken into account to design a complete nonlinear feedforward motion law.

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