Search for: All records

With the introduction of Industry 5.0, there is a growing focus on human-robot collaboration and the empowerment of human workers through the se of robotic technologies. Collaborative robots, or cobots, are well suited for filling the needs of industry. Cobots have a prioritization on safety and collaboration, giving them the unique ability to work in close proximity with people. This has the potential impact of increasing task productivity and efficiency while reducing ergonomic strain on human workers, as cobots can collaborate on tasks as teammates and support their human collaborators. However, effectively deploying and using cobots requires multidisciplinary knowledge spanning fields such as human factors and ergonomics, economics, and human-robot interaction. This knowledge barrier represents a growing challenge in industry, as workers lack the skills necessary to effectively leverage and realize the potential of cobots within their applications, resulting in cobots often being used non-collaboratively as a form of cheap automation. This presents several research opportunities for the creation of new cobot systems that support users in the creation of cobot interactions. The goal of this dissertation is to explore the use of abstraction and scaffolding supports within cobot systems to assist users in building human-robot collaborations. Specifically, this research (1) presents updates to the design of systems for planning and programming collaborative tasks, and (2) evaluates each system to understand how it can support user creation of cobot interactions. First, I present the CoFrame cobot programming system, a tool built on prior work, and illustrate how it supports user creation and understanding of cobot programs. Then, I present the evaluation of the system with domain experts, novices, and a real-world deployment to understand in which ways CoFrame does and does not successfully support users. I then describe the Allocobot system for allocating work and planning collaborative interactions, describing how it encodes multiple models of domain knowledge within its representation. Finally, I evaluate the Allocobot system in two real-world scenarios to understand how it produces and optimizes viable interaction plans. 

Collaborative robots (cobots) are increasingly utilized within the manufacturing industry. However, despite the promise of collaboration and easier programming when compared to traditional industrial robots, cobots introduce new interaction paradigms that require more thought about the environment and distribution of tasks to fully realize their collaboration capabilities. Due to these additional requirements, these collaboration capabilities are underutilized in current manufacturing. Therefore, to make cobots more accessible and easy to use, new systems need to be developed that support users during interaction. In this research, we propose a set of tools that target cobot use for multiple groups of individuals that use them, to better support users and simplify cobot collaboration. 

Authored robotics applications have a diverse set of requirements for their authoring interfaces, being dependent on the underlying architecture of the program, the capabilities of the programmers and engineers using them, and the capabilities of the robot. Visual programming approaches have long been favored for both novice-level accessibility and clear graphical representations, but current tools are limited in their customizability and ability to be integrated holistically into larger design interfaces. OpenVP attempts to address this by providing a highly configurable and customizable component library that can be integrated easily into other modern web-based applications. 

Robots are ubiquitous in small-to-large-scale manufacturers. While collaborative robots (cobots) have significant potential in these settings due to their flexibility and ease of use, proper integration is critical to realize their full potential. Specifically, cobots need to be integrated in ways that utilize their strengths, improve manufacturing performance, and facilitate use in concert with human workers. Efective integration requires careful consideration and the knowledge of roboticists, manufacturing engineers, and business administrators. We propose an approach involving the stages of planning, analysis, development, and presentation, to inform manufacturers about cobot integration within their facilities prior to the integration process. We contextualize our approach in a case study with an SME collaborator and discuss insights learned. 

We argue for the use of Petri nets as a modeling language for the iterative development process of interactive robotic systems. Petri nets, particularly Timed Colored Petri nets (TCPNs), have the potential to unify various phases of the development process-design, specification, simulation, validation, implementation, and deployment. We additionally discuss future directions for creating a domain-specific variant of TCPNs tailored specifically for HRI systems development.