Manipulation Of Large Objects Research Articles

The Tele-MAGMaS: An Aerial-Ground Comanipulator System

The manipulation of large objects by robotic systems is a challenge for applications in the construction industry, industrial decommissioning, and urban search and rescue (USAR). These are associated with dangerous environments and thus motivate devising robotic solutions to replace human presence. Furthermore, they often require manipulation of long objects, such as pipes, bars, beams, and metal frameworks, with limited access to their center of mass (CoM).

Minimalism Distribution Supermodularity

We have designed and implemented multi-agent strategies for manipulation tasks by distributing mechanically-based sequential algorithms across several autonomous spatially-separated agents, such as mobile robots. Our experience using mobile robots for the manipulation of large objects (couches, boxes, file cabinets, etc.) leads us to recommend a minimalist architecture for multi-agent programming. In particular, our methodology has led us to derive asynchronous distributed strategies that require no direct communication between agents, and very sparse geometric and dynamic models of the objects our robots manipulate. We argue for a design principle called supermodularity, which is orthogonal both to the notion of modularity in cognitive AI and also to horizontal decomposition (the non-modularity advocated in the subsumption/connectionist literature.) Finally, we discuss a simple mobotscheme infrastructure to implement supermodular architectures. In the past few years we have programmed many supermodular manipulation protocols and tested them extensively on our team of mobile robots. We describe why we think the supermodular infrastructure results in robust, simple, readable, manipulation strategies that can be recycled and reused.