C. Locomotion Velocity
The locomotion of the robot can be controlled by the user
through the human computer interface on the PC as shown in
Fig. 19. The maximum velocities of going forward, going
backward, turning left, and turning right of the robot are tested
ten times respectively. The average velocities of forward and
backward going are 0.35 m/s and 0.33 m/s respectively when
the ZMP of the robot is close to the geometrical center of the
support rectangle. They are smaller than the maximum
permitted velocities as analyzed in Section II B. The robot is
stable when it goes forward and backward. The average
velocities of left and right turning are about 3.4 °/s and 4.2 °/s
respectively. The turning radii are about 90 cm. The turning
velocities are smaller than the maximum permitted velocities
as analyzed in Section II B.