Mobile Manipulation

Mounting a robot arm on a mobile base so it can move and work at once, combining navigation and manipulation.

Mobile manipulation means an arm mounted on a mobile base — wheeled or legged — that moves while carrying out manipulation tasks; robots built this way are called mobile manipulators, or composite robots in Chinese industry usage. A fixed arm can only work within its own reach, but adding a base lets it operate across a whole room, a warehouse, or even multiple floors. The cost is more degrees of freedom and a less structured environment: the system has to decide where the base goes and how the arm moves at the same time, and handle how base localization error affects grasping precision. Stanford's Mobile ALOHA (2024) collected data through low-cost, whole-body teleoperation and, with just 20 to 50 demonstrations per task, learned to fry shrimp and plate it, open a two-door cabinet to put away a pot, and call and enter an elevator on its own. The researchers also found that co-training with static bimanual data could raise success rates by up to 90%. It's a core capability for household and warehouse robots.

ExampleMobile ALOHA stands at the stove, pours in oil, and adds the shrimp; one arm tilts the pan while the other flips the shrimp with a spatula, then the base turns around and tips the shrimp into a bowl on the table behind it.

Related

Mobile Manipulator · Navigation · Manipulation · Loco-manipulation · Mobile ALOHA · Mobile Base (Chassis)

Sources

Mobile manipulator (Wikipedia)
Mobile ALOHA: Learning Bimanual Mobile Manipulation with Low-Cost Whole-Body Teleoperation (arXiv:2401.02117)

As of

2024-01