Graduate Student Develops Visionless Robot Assembly for Space

Sarah Downs, a graduate student in electrical engineering at Texas A&M University, has developed an algorithm enabling robots to perform complex assembly tasks in space without relying on vision systems. Her research, a collaboration with NASA and the U.S. Air Force, addresses the classic "peg-in-hole" problem for satellite antenna assembly. Unlike traditional methods that use cameras, Downs's algorithm employs a force-based insertion process. This allows the robot to "feel" the position and orientation of the antenna using torque sensors, which is crucial for operating in the harsh and remote environment of outer space where cameras might fail. The system is designed to function in zero gravity, a significant challenge that requires counteracting reaction torques to prevent satellites from drifting. Downs is currently pursuing her Ph.D. at Texas A&M, continuing her work on a larger scale and focusing on robots for extreme environments. She previously developed a robotic arm to assist individuals with mobility challenges as part of her master's degree at the University of Tulsa, where she also contributed to a lunar lander exhibit for the Tulsa Air and Space Museum. Downs's passion for robotics began in her youth through the First Lego League and was further inspired by NASA's Mars rovers. She aims to eventually work for NASA, contributing to missions involving Mars rovers or space station robotics.