Spelling suggestions: "subject:"machinery, kinematics off"" "subject:"machinery, kinematics oof""
21 |
Structure synthesis and preliminary design of a four-input decoder mechanismHaas, Steven Lawrence 05 1900 (has links)
No description available.
|
22 |
The analytical theory of coplanar motion applied to approximate four-bar straight line mechanismsTesar, Delbert 08 1900 (has links)
No description available.
|
23 |
Reduction of Burmester theory to design practiceCarlson, Dennis Percy 08 1900 (has links)
No description available.
|
24 |
Kinematic design, motion/force coordination, and performance analysis of force controlled wheeled vehicles /Choi, Byung Jin, January 1998 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 189-200). Available also in a digital version from Dissertation Abstracts.
|
25 |
Algorithms for determining the kinematic loops in mechanismsPhelps, Thomas A. January 1983 (has links)
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).
|
26 |
Impact of system-level factors on planetary gear set behaviorLigata, Haris, January 2007 (has links)
Thesis (Ph. D.)--Ohio State University, 2007. / Title from first page of PDF file. Includes bibliographical references (p. 309-316).
|
27 |
Motion planning for flexible manipulatorsPond, Christopher Burke 10 November 2017 (has links)
As robotic manipulators become more prevalent, particularly in hazardous environments
or for repetitive tasks, demand continues for increased performance and
decreased cost. In some applications, both can be achieved by reducing the weight
of the manipulator. However, reduced weight often leads to significant structural
flexibility and vibration which, for most tasks, is generally regarded as detrimental
to performance.
Although there has been a great deal of research in the area of controlling flexible
manipulators to follow a desired trajectory, much less work has been directed towards
choosing the trajectory itself. The objective of this work is to optimize point-to-point
motions in joint space to reduce vibration. This problem is formulated as one
of functional optimization and the applicable methods of solution are reviewed. An
indirect method is chosen that allows modular software development by preserving the
integrity of existing nonlinear dynamics models. Numerical results are compared with
trajectories generated by other means and show a significant reduction in vibration
possible by optimization, particularly for varying joint paths.
Finally, the effectiveness of the trajectory optimization scheme is further evaluated
for high-speed, large-angle motions of an experimental nonplanar two-link flexible
manipulator. Such results are lacking in the literature, but are very important
for assessing the utility of trajectory optimization in the presence of modelling and
tracking errors. Again, significant reductions in vibration are demonstrated by using
the global optimization approach for trajectory generation. / Graduate
|
28 |
Kinematic analysis of legged system locomotion on smooth horizontal surfacesBaek, Yoon Su 30 July 1990 (has links)
This thesis presents a model of legged locomotion in
which position and velocity of body are directly controlled
by positions and velocities of feet. One central
relationship between foot acceleration, leg stroke and body
velocity is developed. Procedures for determining all
parameters of a step sequence including periods of constant
body velocity (steady state) and constant linear acceleration
of body (transient state) are presented.
The following assumptions are used. Symmetrical
trapezoidal velocity profiles are used for body and feet.
Transient period is longer than or equal to one step time and
a multiple of half step time. Step time and duty factor are
constant during each locomotion stage. Stepping movements of
a pair of legs are 180° out of phase and successive prints of
one foot are symmetrically placed relative to the other foot.
Starting and stopping occur with feet on a line perpendicular
to the direction of body motion. Locomotion starts by
lifting one foot and ends with one foot on the ground and the
other being placed.
When analyzing walking, designing a walking machine or
designing a stepping sequence for an existing walking
machine, it is important to understand constraints placed on
body motion by motion of a single leg. Two dimensionless
numbers which describe foot velocity profile are developed.
Two additional dimensionless numbers result from constraint
of leg workspace by foot acceleration and body velocity
during steady state. These numbers provide useful
relationships for design procedures.
Defining a walking sequence requires transformation of
objectives from global to body coordinates and continuously
accounting for the relationship between these two systems.
The technique described does this when body acceleration is
non-zero as well as when body velocity is constant.
Relationship between body and global coordinates is tracked
for one leg pair using two diagrams: 1) position of feet
relative to body versus time; 2) distances moved by feet and
body in the global frame.
A closed form inverse kinematic solution and an
algorithm to find workspace for general three-revolute
manipulator are presented. / Graduation date: 1991
|
29 |
Design, modeling and control of a compliant parallel XY micro-motion stage with complete decoupling propertyHuang, Ji Ming January 2011 (has links)
University of Macau / Faculty of Science and Technology / Department of Electromechanical Engineering
|
30 |
Calcul de l'effet des machines en mouvementPetit, Frédéric. January 1900 (has links)
Thèse : Mécanique. Astronomie : Paris, Faculté des Sciences : 1835. / Titre provenant de l'écran-titre.
|
Page generated in 0.0726 seconds