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Problem 5 of Homework

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Title: Problem 5 of Homework


1
Problem 5 of Homework
2
Problem 5 of Homework
3
Why so hard getting convergence?
4
Consider two trajectories.
5
A very small difference in just one of our
parameters accounts for a large difference in
terminal position/orientation
6
A very small difference in just one of our
parameters accounts for a large difference in
terminal position/orientation
7
A very small difference in just one of our
parameters accounts for a large difference in
terminal position/orientation
8
A very small difference in just one of our
parameters accounts for a large difference in
terminal position/orientation
9
Notice that for quite a while the two
trajectories remain close together.
10
This high sensitivity after a longer interval to
small changes is characteristic of many nonlinear
systems.
11
  • True or False Kinematics is principally
    concerned with the internal torques that act upon
    the various robotic members.
  • True or False The homogeneous transformation
    matrix is a 3x3 matrix.
  • 3. True or False Elements of the
    direction-cosine matrix or rotation matrix
    can be determined with knowledge of three
    Euler-angle values.

12
  • True or False Kinematics is principally
    concerned with the internal torques that act upon
    the various robotic members.
  • True or False The homogeneous transformation
    matrix is a 3x3 matrix.
  • 3. True or False Elements of the
    direction-cosine matrix or rotation matrix
    can be determined with knowledge of three
    Euler-angle values.

13
  • True or False Kinematics is principally
    concerned with the internal torques that act upon
    the various robotic members.
  • True or False The homogeneous transformation
    matrix is a 3x3 matrix.
  • 3. True or False Elements of the
    direction-cosine matrix or rotation matrix
    can be determined with knowledge of three
    Euler-angle values.

14
  • True or False Kinematics is principally
    concerned with the internal torques that act upon
    the various robotic members.
  • True or False The homogeneous transformation
    matrix is a 3x3 matrix.
  • 3. True or False Elements of the
    direction-cosine matrix or rotation matrix
    can be determined with knowledge of three
    Euler-angle values.

15
  • True or False The angular velocity of a robots
    end-most member, if it is referred to the
    coordinate system that is fixed to that rigid
    member, is always zero.
  • True or False The angular velocity of a robots
    end-most member, if it is measured with respect
    to the coordinate system that is fixed to that
    rigid member, is always zero.
  • 6. True or False The kinetic energy at any
    moment of a robots end-most member depends only
    upon the velocity of that members mass center
    with respect to an inertial coordinate system,
    provided that member is rigid.

16
  • True or False The angular velocity of a robots
    end-most member, if it is referred to the
    coordinate system that is fixed to that rigid
    member, is always zero.
  • True or False The angular velocity of a robots
    end-most member, if it is measured with respect
    to the coordinate system that is fixed to that
    rigid member, is always zero.
  • 6. True or False The kinetic energy at any
    moment of a robots end-most member depends only
    upon the velocity of that members mass center
    with respect to an inertial coordinate system,
    provided that member is rigid.

17
  • True or False The angular velocity of a robots
    end-most member, if it is referred to the
    coordinate system that is fixed to that rigid
    member, is always zero.
  • True or False The angular velocity of a robots
    end-most member, if it is measured with respect
    to the coordinate system that is fixed to that
    rigid member, is always zero.
  • 6. True or False The kinetic energy at any
    moment of a robots end-most member depends only
    upon the velocity of that members mass center
    with respect to an inertial coordinate system,
    provided that member is rigid.

18
  • True or False The angular velocity of a robots
    end-most member, if it is referred to the
    coordinate system that is fixed to that rigid
    member, is always zero.
  • True or False The angular velocity of a robots
    end-most member, if it is measured with respect
    to the coordinate system that is fixed to that
    rigid member, is always zero.
  • 6. True or False The kinetic energy at any
    moment of a robots end-most member depends only
    upon the velocity of that members mass center
    with respect to an inertial coordinate system,
    provided that member is rigid.

19
  • True or False For two different Cartesian
    coordinate systems, there are 12 possible sets of
    Euler angles that may be used to specify the
    relative orientations of those frames.
  • True or False Nonholonomic robots forward
    kinematics may be expressed in terms of
    differential relations but not algebraic
    relations between the internal rotations and the
    robots external position.
  • 9.True or False If we manage to return a
    holonomic robots internal rotations to the same
    angles that were taught to achieve a given pose,
    then, provided the robots members remain rigid,
    the robot will return to that same pose.
  • 10.True or False According to the
    Denevit-Hartenberg convention, for member i-1, qi
    is positive about the Zi axis in accordance with
    the right-hand rule.

20
  • True or False For two different Cartesian
    coordinate systems, there are 12 possible sets of
    Euler angles that may be used to specify the
    relative orientations of those frames.
  • True or False Nonholonomic robots forward
    kinematics may be expressed in terms of
    differential relations but not algebraic
    relations between the internal rotations and the
    robots external position.
  • 9.True or False If we manage to return a
    holonomic robots internal rotations to the same
    angles that were taught to achieve a given pose,
    then, provided the robots members remain rigid,
    the robot will return to that same pose.
  • 10.True or False According to the
    Denevit-Hartenberg convention, for member i-1, qi
    is positive about the Zi axis in accordance with
    the right-hand rule.

21
  • True or False For two different Cartesian
    coordinate systems, there are 12 possible sets of
    Euler angles that may be used to specify the
    relative orientations of those frames.
  • True or False Nonholonomic robots forward
    kinematics may be expressed in terms of
    differential relations but not algebraic
    relations between the internal rotations and the
    robots external position.
  • 9.True or False If we manage to return a
    holonomic robots internal rotations to the same
    angles that were taught to achieve a given pose,
    then, provided the robots members remain rigid,
    the robot will return to that same pose.
  • 10.True or False According to the
    Denevit-Hartenberg convention, for member i-1, qi
    is positive about the Zi axis in accordance with
    the right-hand rule.

22
  • True or False For two different Cartesian
    coordinate systems, there are 12 possible sets of
    Euler angles that may be used to specify the
    relative orientations of those frames.
  • True or False Nonholonomic robots forward
    kinematics may be expressed in terms of
    differential relations but not algebraic
    relations between the internal rotations and the
    robots external position.
  • 9.True or False If we manage to return a
    holonomic robots internal rotations to the same
    angles that were taught to achieve a given pose,
    then, provided the robots members remain rigid,
    the robot will return to that same pose.
  • 10.True or False According to the
    Denevit-Hartenberg convention, for member i-1, qi
    is positive about the Zi axis in accordance with
    the right-hand rule.

23
  • True or False For two different Cartesian
    coordinate systems, there are 12 possible sets of
    Euler angles that may be used to specify the
    relative orientations of those frames.
  • True or False Nonholonomic robots forward
    kinematics may be expressed in terms of
    differential relations but not algebraic
    relations between the internal rotations and the
    robots external position.
  • 9.True or False If we manage to return a
    holonomic robots internal rotations to the same
    angles that were taught to achieve a given pose,
    then, provided the robots members remain rigid,
    the robot will return to that same pose.
  • 10.True or False According to the
    Denevit-Hartenberg convention, for member i-1, qi
    is positive about the Zi axis in accordance with
    the right-hand rule.

24
In the 1990s a mobile robot was deployed in
several locations across the country as a test by
the U.S. Dept. of Veterans Affairs to assist in
the harvest of tree-borne fruit. to dispense
gasoline autonomously at filling stations. to
deliver medicines autonomously in hospitals. to
secretly monitor U.S. veterans affairs.
25
In the 1990s a mobile robot was deployed in
several locations across the country as a test by
the U.S. Dept. of Veterans Affairs to assist in
the harvest of tree-borne fruit. to dispense
gasoline autonomously at filling stations. to
deliver medicines autonomously in hospitals. to
secretly monitor U.S. veterans affairs.
26
Early in the 1990s one firm worried about the
imminent release of a Japanese robot that
would autonomously deliver commercial-grade
floor maintenance. dispense gasoline
autonomously at filling stations. deliver
medicines autonomously in hospitals. assist with
the harvest of tree-borne fruit.
27
Early in the 1990s one firm worried about the
imminent release of a Japanese robot that
would autonomously deliver commercial-grade
floor maintenance. dispense gasoline
autonomously at filling stations. deliver
medicines autonomously in hospitals. assist with
the harvest of tree-borne fruit.
28
Robots that operate under the teach-repeat
mode are often taught using unemployed college
professors. a degree-jogging filament. a teach
pendant. a robomaster.
29
Robots that operate under the teach-repeat
mode are often taught using unemployed college
professors. a degree-jogging filament. a teach
pendant. a robomaster.
30
Teach-repeat relies upon the angular-position
servomechanism of each joint rotation. the
rigidity of robots members. the delivery of
each workpiece to the prototype workpieces
position/orientation in space. All of the above.
31
Teach-repeat relies upon the angular-position
servomechanism of each joint rotation. the
rigidity of robots members. the delivery of
each workpiece to the prototype workpieces
position/orientation in space. All of the above.
32
A large and largely unsuccessful effort to apply
calibrated vision to control robots in a nearly
workerless factory was attempted in the 1980s
at IBM. in the 1960s at Nissan. in the 1990s at
Boeing. in the 1980s at GM.
33
A large and largely unsuccessful effort to apply
calibrated vision to control robots in a nearly
workerless factory was attempted in the 1980s
at IBM. in the 1960s at Nissan. in the 1990s at
Boeing. in the 1980s at GM.
34
In 2004 a cry went out from the scientific
community to use a robot to monitor Antarctica
for global warming. service the Hubble
telescope. descend into Mt. St.
Helens. transport spent nuclear fuel into Yucca
Mountain.
35
In 2004 a cry went out from the scientific
community to use a robot to monitor Antarctica
for global warming. service the Hubble
telescope. descend into Mt. St.
Helens. transport spent nuclear fuel into Yucca
Mountain.
36
Visual Servoing makes extensive use
of ultrasound sensors. the matrix
Jacobian. nonholonomic degrees of
freedom. cheesecake.
37
Visual Servoing makes extensive use
of ultrasound sensors. the matrix
Jacobian. nonholonomic degrees of
freedom. cheesecake.
38
The Roomba robot is most closely identified
with behavior-based robotics. teach/repeat. vi
sual servoing. simultaneous localization and
mapping.
39
The Roomba robot is most closely identified
with behavior-based robotics. teach/repeat. vi
sual servoing. simultaneous localization and
mapping.
40
Which of the following is not an instance of the
inverse problem creating a Pixar movie scene
from a geometric/optical model of a childs
bedroom. human recognition in a movie theatre of
the objects in an image of a childs bedroom
presented on the screen. identification of the
flaws in a reactor vessel using ultrasound
responses. solving a crime using fingerprints.
41
Which of the following is not an instance of the
inverse problem creating a Pixar movie scene
from a geometric/optical model of a childs
bedroom. human recognition in a movie theatre of
the objects in an image of a childs bedroom
presented on the screen. identification of the
flaws in a reactor vessel using ultrasound
responses. solving a crime using fingerprints.
42
The intensity of light reflecting off a surface
in any given direction can be measured
in Newtons per degree. foot-candles per solid
radian. Watts per steradian. Joules per
angstrom.
43
The intensity of light reflecting off a surface
in any given direction can be measured
in Newtons per degree. foot-candles per solid
radian. Watts per steradian. Joules per
angstrom.
44
Problem 21
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Problem 23
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ktrans2 (1/2) m2 rG2 . rG2
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