Lynne E. Parker, Daniela Rus and Gaurav S. Sukhatme
Within the context of multiple mobile, and networked robot systems, this chapter explores the current state of the art. After a brief introduction, we first examine architectures for multirobot cooperation, exploring the alternative approaches that have been developed. Next, we explore communications issues and their impact on multirobot teams in Sect. 53.3, followed by a discussion of networked mobile robots in Sect. 53.4. Following this we discuss swarm robot systems in Sect. 53.5 and modular robot systems in Sect. 53.6. While swarm and modular systems typically assume large numbers of homogeneous robots, other types of multirobot systems include heterogeneous robots. We therefore next discuss heterogeneity in cooperative robot teams in Sect. 53.7. Once robot teams allow for individual heterogeneity, issues of task allocation become important; Sect. 53.8 therefore discusses common approaches to task allocation. Section 53.9 discusses the challenges of multirobot learning, and some representative approaches. We outline some of the typical application domains which serve as test beds for multirobot systems research in Sect. 53.10. Finally, we conclude in Sect. 53.11 with some summary remarks and suggestions for further reading.
Multi-robot box pushing
Author C. Ronald Kube, Hong Zhang
Video ID : 199
Robots are used to locate an object in the environment (a box with lights on it) and push it to the desired position (an area of the environment with a light shining on it). The robots cannot communicate with each other, and the box is weighted so at least two robots have to push the box to move it. Each robot has three levels of control. First, it wanders randomly looking for the box. Second, it travels toward the box until contact is made. Third, it checks to see if the box is facing the desired direction; if so, it pushes the box, and, if not, it relocates to a different side of the box.