Human Emulation - I-Sobot

Forward Walking Test

We tested the walking motion of a I-Sobot with no modifications or sensors using only the
preprogrammed walking motion provided by the manufacturer.  The I-Sobot had to walk a distance equal
to three body heights (6.5 inches X 3 = 19.5 inches).  If the robot began to veer to one side, we made no
corrections and just let the robot keep on walking
.
All rights reserved.
RobotServicesGroup.com
NOTE:  These robots are not meant for children.  All of the humanoid robot models discussed on this website use
powerful servos that can pinch or even crush your fingers if you are not careful.  Consult the recommended minimum
age from the manufacturer before allowing children to use any of these robots.
INTERPRETATION:

The I-Sobot walked a distance equal to three body heights (or 19.5 inches) in an average time of 24.9 seconds, with an average
variance from a straight line of 1.86 inches, which is 29% of its body height.  The robot took 33.8 steps on average to complete the
test.  Consider that it takes an average human approximately 4 seconds to walk three body heights, taking just 8 steps.  
That
means that the I-Sobot is 6.2 times slower than a human, and takes 4.2 times as many steps to cover the same relative distance.
 

The I-Sobot is roughly twice as fast as the Robonova-1 we previously tested.  Despite having slower and weaker servos, the
I-Sobot whipped through the walking test in half the time.  It was able to do this thanks to the continuous walking cycle that comes
preprogrammed on the I-Sobot, but not on the Robonova-1.

The I-Sobot also comes with a gyro included as standard equipment.  This may have helped it achieve a lower variance in the
straight line walking test.  However, the bigger impact was probably due to the I-Sobot's wide feet which provide extra stability that
the Robonova-1 lacks.  The I-Sobot only varied 29% of its body height from the center line, but the Robonova-1 wandered 45% of
its body height on average.  The I-Sobot clearly does a better job of mimicing human motions than the Robonova-1 in this test.
   
Time in
seconds
  Variance
from center
in inches
 
Number
of steps
 
Video Links
 
Video Angle
 
Test 1
  24.5
  2.50 right
  33
  Walk 1
  High Side View
 
Test 2
  25.0
  1.50 left
  34
  Walk 2
  High Side View
 
Test 3
  25.8
  2.50 right
  35
  Walk 3
  High Side View
 
Test 4
  25.9
  0.00
  34
  Walk 4
  High Side View
 
Test 5
  25.8
  4.75 left
  35
  Walk 5
  3/4 view
 
Test 6
  24.9
  3.25 left
  34
  Walk 6
  3/4 View
 
Test 7
  25.7
  0.50 right
  35
  Walk 7
  3/4 View
 
Test 8
  25.0
  1.00 left
  34
  Walk 8
  3/4 View
 
Test 9
  24.5
  1.25 right
  33
  Walk 9
  Front View
 
Test 10
  25.0
  2.50 left
  34
  Walk 10
  Front View
 
Test 11
  24.2
  2.50 right
  33
  Walk 11
  Front View
 
Test 12
  24.4
  1.50 left
  33
  Walk 12
  Front View
 
Test 13
  24.4
  1.25 left
  33
  Walk 13
  Overhead View
 
Test 14
  25.0
  1.50 left
  34
  Walk 14
  Overhead View
 
Test 15
  24.2
  0.75 right
  33
  Walk 15
  Overhead View
 
Test 16
  24.2
  1.00 right
  33
  Walk 16
  Overhead View
 
Test 17
  25.7
  3.25 left
  35
  Walk 17
  Low Side View
 
Test 18
  24.1
  1.00 right
  33
  Walk 18
  Low Side View
 
Test 19
  24.2
  0.50 right
  33
  Walk 19
  Low Side View
 
Test 20
  24.8
  4.25 right
  34
  Walk 20
  Low Side View
 
                       
Best
  24.1
  0.00
  33
         
Worst
  25.9
  4.75 left
  35
         
                       
Average
  24.9
  1.86
  33.8
         
Standard Deviation
  0.6
  1.28
  0.8
         
% of body height
  n/a
  29%
  n/a
         
                       
Human Average
  4.0
  n/a
  8
         
                       
Test 1 was pretty typical with a
2.50 inch variance to the right
Test 4 finished with no variance
CONCLUSION:

The I-Sobot performed much better than the Robonova-1 in the walking test, and fared about the same in the 180 degree turn
test.  Considering that the I-Sobot costs only $300 and the Robonova-1 is three times more expensive near $900, the results
appear surprising on the surface.  The real reasons behind the I-Sobot's superior performance are the continuous walking cycle
that came preprogrammed with the robot, the gyro that comes as standard equipment, and the wide feet for better stability.

In terms of Human Emulation, the I-Sobot is the hands down winner.  If you also consider that it comes with voice
recognition software, and a speaker to play sounds, it is truly a remarkable robot.  One main drawback is the inability to make
any user modifications by adding sensors or programming new motions.  Hopfeully, robot manufacturers will take the best
functions from the I-Sobot and add to it the ability to make modifications.  The result would be a truly astonishing robot.
   
Time in
seconds
 
Number of
steps
 
Variance
side-to-side
in inches
 
Variance
front-to-back
in inches
 
Turn
Direction
 
Video
Links
 
Video
Angle
   
Test 1
  18.0
  14
  4.75
  4.00
  Right
  Turn 1
  Front
   
Test 2
  16.1
  13
  4.50
 
3.50
  Right
  Turn 2
  Front
   
Test 3
  14.4
  12
  5.00
 
3.50
  Left
  Turn 3
  Front
   
Test 4
  14.0
  11
  4.75
 
3.25
  Left
  Turn 4
  Front
   
Test 5
  14.8
  12
  5.00
 
4.00
  Right
  Turn 5
  3/4 view
   
Test 6
  15.5
  13
  4.00
 
4.50
  Right
  Turn 6
  3/4 view
   
Test 7
  14.7
  12
  5.00
 
3.00
  Left
  Turn 7
  3/4 view
   
Test 8
  14.9
  12
  5.00
 
2.50
  Left
  Turn 8
  3/4 view
   
Test 9
  14.8
  12
  5.00
 
4.50
  Right
  Turn 9
  Low Side
   
Test 10
  15.2
  12
  4.50
 
3.00
  Right
  Turn 10
  Low Side
   
Test 11
  14.7
  12
  4.50
 
3.75
  Left
  Turn 11
  Low Side
   
Test 12
  14.5
  12
  5.50
 
2.75
  Left
  Turn 12
  Low Side
   
Test 13
  15.4
  12
  4.50
 
3.75
  Right
  Turn 13
  High Side
   
Test 14
  14.4
  12
  4.25
 
3.50
  Right
  Turn 14
  High Side
   
Test 15
  13.8
  11
  4.25
 
3.00
  Left
  Turn 15
  High Side
   
Test 16
  14.1
  11
  5.00
 
3.00
  Left
  Turn 16
  High Side
   
Test 17
  15.2
  12
  4.50
 
4.25
  Right
  Turn 17