Sarah Downs Equips NASA’s Robots With Assembly Skills

This 12 months the IEEE graduate scholar member achieved that dream. For her ultimate venture as a grasp’s diploma candidate in electrical engineering on the University of Tulsa, she labored on an algorithm in collaboration with NASA and the U.S. Air Force.

The algorithm she developed allows a robotic assembling satellites in area to insert an antenna into the proper spot, addressing robotics’s traditional peg-in-hole downside of inserting an object into its corresponding gap.

Now a Ph.D. scholar in electrical engineering at Texas A&M University in Faculty Station, Downs is constant her analysis on satellite tv for pc meeting and manipulation “however on a a lot bigger scale,” she says.

Following a childhood ardour

Downs grew up within the Tulsa space. Her father, who died from a heart attack in 2015 when she was 13, was a security advisor within the oil and gas business. Her mom stayed house to handle her brother, who has autism. After her father died, her mom went again to school to earn a bachelor’s diploma in enterprise so she might help the household.

“We didn’t have a lot earnings, and my mother was all the time apprehensive about cash,” Downs says. “That made me extra conscious of getting a profitable profession, in a financial sense.”

From then on, each time she thought-about her future profession, having an honest wage to help the household was excessive on her record.

By pursuing a profession in robotics, she says, she will be able to comply with her ardour whereas acquiring monetary safety.

In highschool, Downs joined the First robotics membership, the place she discovered herself drawn to {the electrical} elements used within the machines she and her classmates constructed.

Throughout her ultimate two years of highschool, she participated in an extension program at Tulsa Tech, a coaching faculty. She spent half her day in highschool courses and the opposite half taking engineering programs on the vocational faculty.

After graduating in 2020, she accepted scholarships to attend the College of Tulsa. She started her freshman 12 months at UTulsa not figuring out whether or not she wished to main in electrical or mechanical engineering, she says, including that her love of working with small programs helped her select EE.

For her senior year capstone project, she and two of her classmates designed a lunar lander exhibit for the Tulsa Air and Space Museum. They created an interactive sport that simulates missions on lunar and martian surfaces. 4 celestial our bodies—the moon, Venus, Mars, and Titan—are listed throughout three pc displays. Utilizing a sport controller, museum guests can discover the digital floor of every one. The exhibit continues to be on show.

Downs earned her bachelor’s diploma in electrical engineering in 2024 and continued her training on the college’s EE grasp’s diploma program.

Each extra and simpler than folks suppose

When Downs started her graduate research, she was alleged to be a part of a NASA robotics venture for 2 years. However when a delay in authorities funding postponed the venture’s begin, she as a substitute spent her first 12 months within the faculty’s Institute for Robotics and Autonomy, then newly launched. Its principal focus is creating robots to help individuals who have mobility challenges.

Impressed by her grandmother, who was wheelchair-bound on account of extreme arthritis, Downs developed a robotic arm that helps older folks and wheelchair customers stay independently. The arm was in a position to establish and place objects within the acceptable places inside the house, equivalent to unloading sure groceries from a purchasing bag and putting them on a shelf or in separate containers.

Earlier than the beginning of her sophomore 12 months in 2025, the NASA venture lastly secured authorities funding. She developed a robotic that achieves the peg-in-hole activity with out utilizing any imaginative and prescient programs. Sometimes, cameras assist information robots’ satellite-assembly work. However within the harsh, distant surroundings of outer area, cameras may malfunction or encounter delays.

Relatively than utilizing cameras, Downs’s robotic arm deploys a force-based insertion course of to sense place and orientation of objects within the arm’s surroundings. The robotic loosely grips an antenna and, with a torque sensor on its gripper, “feels” the drive suggestions of the place the satellite tv for pc and antenna are in relation to one another. The robotic then guides the antenna meeting right into a goal opening on its satellite tv for pc and maintains the place throughout adhesion.

Including to the complexity, the robotic performs its activity in zero gravity.

“With out gravity, you now have to think about the arm’s response torques on the satellite tv for pc to keep away from flinging it into area,” Downs says. Any movement from the arm throughout the insertion course of, particularly from elevated forces, might trigger the satellite tv for pc to proceed motion in that course.

To fight that, Downs is performing calculations for the venture to direct focused reverse thrusts and counter the drive of the robotic’s motions.

Her graduate venture captures the straightforward but advanced nature of robotics that she finds fascinating, she says.

“I feel robots are each extra and likewise simpler than folks suppose,” she says. “Actually, all that you must begin programming a robotic is its Denavit-Hartenberg parameters, and you are able to do lots with that,” she says, referencing the 4 values used to explain the place and orientation of a robotic arm and manipulators. Even with completely different grippers and levels of freedom, “basically, all robotic manipulators begin there,” she says.

“However,” she provides, “we’re nonetheless studying a lot about how robots work together with their surroundings. Even one thing easy to us, like manipulating a pen, continues to be extremely advanced for robots.”

Downs is finishing her doctoral thesis within the Robotic Space Simulator venture at Texas A&M’s Robotics and Automation Design (RAD) Lab, which makes a speciality of creating machines that may survive in excessive environments. It collaborates with NASA.

Her thesis advisor is Robert Ambrose, a NASA veteran who launched the RAD Lab in 2022. The IEEE member is about to function affiliate director of the varsity’s House Institute, on account of open this 12 months in Houston. The analysis facility is being constructed subsequent to the Johnson Space Center.

After incomes her Ph.D., Downs says, she hopes to sooner or later work for NASA, creating rovers that gather samples from Mars or robotic arms that carry out duties on space stations.

To study extra about robots, take a look at IEEE Spectrum’s guide.

Getting out of the engineering bubble

Downs joined IEEE in 2020 as a freshman at UTulsa to get extra concerned in electrical engineering occasions on campus. On the time, the COVID-19 pandemic stored golf equipment and organizations from assembly in individual.

She was energetic in her faculty’s IEEE student branch and was elected as its 2022–2024 president. Below her management, the department went from having a couple of occasions to internet hosting one each two weeks.

They included lunch-and-learn classes and dinners that related college students with skilled engineers and the college’s alumni. Downs additionally organized hands-on workshops on soldering, 3D printing, CAD modeling, and résumé-building.

Her efforts helped enhance the department’s government board membership from roughly 5 college students to 25 in 2023. The identical 12 months, her soldering workshop attracted about 80 college students.

She says she loved working with IEEE, particularly “partaking with alumni and studying from engineers.”

IEEE is a superb useful resource for networking alternatives, she says, noting that “throughout the COVID-19 pandemic, engineering college students stayed of their bubbles.” IEEE occasions helped the scholars make connections that might serve them effectively, she says.

“Networking is essential, particularly in at present’s robust job market,” she says. “It’s lots about who you understand and the way folks observe your work ethic.”

Downs, who now serves as an IEEE graduate advisor for UTulsa’s scholar department, says she has seen firsthand how the varsity’s scholar department community has benefited its student members.

“A variety of them have discovered jobs” due to IEEE, she says.