摘要 |
The robot comprises a movable member; a motor operable to change a position of the movable member relative to a gravitationally-loaded axis; and a servo operable to control the motor. The servo has a normal operational mode in which it controls the motor to define the position of the movable member relative to the gravitationally-loaded axis. The servo additionally has a training mode in which it controls the motor to set the movable member to a weightless state. In its weightless state, a user can easily and accurately move the movable member to train the robot. |