Small robots play a crucial role in exploring and inspecting confined spaces that are inaccessible to larger robots. These compact machines possess the ability to navigate around obstacles and carefully maneuver through intricate environments. This capability makes them indispensable in tasks such as inspecting machinery and searching for survivors in disaster scenarios. However, developing small robots that can navigate autonomously and carry their own power sources is a challenging feat due to their size constraints. But now, a team of researchers led by Aaron Johnson and Sarah Bergbreiter has introduced Mugatu, the first steerable bipedal robot with a single motor. This groundbreaking creation is self-contained, self-starting, and possesses controlled left, right, and straight steering, leveraging only two rigid bodies and one actuator.
The project’s primary objective was to simplify the walking mechanism of robots to its core essence, allowing for scalability in size and unique functionalities. By comprehending the impact of scaling on locomotion, this innovative approach holds tremendous potential for adapting existing designs to navigate smaller spaces or carry heavier loads. James Kyle, the project’s first author and mechanical engineering graduate, emphasizes the importance of scaling in locomotion and its far-reaching benefits. This initiative opens doors for an array of applications, including fitting robots through narrow pipes and enhancing their load-carrying capabilities.
The team faced several challenges throughout the development process, exemplifying their dedication and expertise. Kendall Hart, an undergraduate mechanical engineering student, played a vital role in the project, particularly in developing the robot’s current sensor. This critical component enabled the team to calculate the total cost of transport, which measures the energy consumption over a given distance. Hart’s involvement provided him with a hands-on application of his academic knowledge in MATLAB programming and debugging. The debugging process strengthened his problem-solving skills and self-confidence, as he navigated through obstacles without constant mentor guidance.
The team’s ultimate goal, affectionately nicknamed “The LEGO Project,” is to downsize these walkers to the size of LEGO blocks. While achieving this milestone will undoubtedly take time, with significant changes in mechanics required, it holds tremendous promise. The profound impact and uniqueness of this endeavor lie in the fact that such a feat has never before been witnessed. The drastic simplification of the walking mechanism, coupled with the robot’s single degree of freedom, represents a significant leap towards creating highly efficient small robots. The collaborative efforts of James Kyle, Justin Y. Kim, Kendall Hart, Sarah Bergbreiter, and Aaron Johnson have laid the foundation for a remarkable future in the realm of small-scale robotics.
The development of Mugatu, the first steerable bipedal robot with a single motor, revolutionizes the field of small robots. Its unparalleled capabilities enable it to navigate confined spaces with ease, inspect machinery, and assist in disaster scenarios. By simplifying the walking mechanism to its core essence, this innovative design allows for scalability and customization, paving the way for future advancements in small robots. The ongoing “LEGO Project” aims to miniaturize these walkers to the size of LEGO blocks, promising a remarkable and unparalleled future in small-scale robotics. With the exceptional collaboration and expertise of the entire team, led by Aaron Johnson and Sarah Bergbreiter, a new era of investigation and inspection has dawned, driven by the power of small robots.