When we speak about using more than one or two robots for an application, the application is usually termed a swarm robotics application. Swarm robotics is the study of how a collection of robots are used to perform a complex task. They are inspired by biological species that work in groups, such as a collection of bees, a flock of birds, or a group of ants.
All of these creatures work collectively and carry out tasks such as building the beehive, collecting food, or building ant nests, respectively. If you consider ants, they have a load-carrying capacity of 50-100 times their own weight. Now, imagine a group of such ants lifting even more than what they could lift individually. This is how swarm robotics works too. Imagine that our robot arm only has a designed payload of 5 kg and needs lift a 15-20 kg object. We could achieve the...