Secondly, the speed test in four moving directions, let the cleaning robot run on the plain ground indoors,
and move separately along four orientations (Forward, Backward, Left,
Right) at a maximum speed.
Then we measure the changes of
moving speed on condition that moving distances are the
same, 6m. Shown in Fig.9, The horizontal axis is time
coordinate axis (min), the vertical axis is speed coordinate axis
(m/min), the blue line is the real speed value and the green line
is average speed value of this robot. We can consider the
maximum speed of the robot is about 12m/min.