Rishi Jangale and Derek Pravecek with RoboBall III. Picture credit score: Emily Oswald/Texas A&M Engineering.
By Alyssa Schaechinger
Whereas working at NASA in 2003, Dr. Robert Ambrose, director of the Robotics and Automation Design Lab (RAD Lab), designed a robotic with no mounted high or backside. An ideal sphere, the RoboBall couldn’t flip over, and its form promised entry to locations wheeled or legged machines couldn’t attain — from the deepest lunar crater to the uneven sands of a seaside. Two of his college students constructed the primary prototype, however then Ambrose shelved the concept to concentrate on drivable rovers for astronauts.
When Ambrose arrived at Texas A&M College in 2021, he noticed an opportunity to reignite his thought. With funding from the Chancellor’s Analysis Initiative and Governor’s College Analysis Initiative, Ambrose introduced RoboBall again to life.
Now, 20 years after the unique thought, RoboBall is rolling throughout Texas A&M College.
Pushed by graduate college students Rishi Jangale and Derek Pravecek, the RAD Lab is intent on sending RoboBall, a novel spherical robotic, into uncharted terrain.
Jangale and Pravecek, each Ph.D. college students within the J. Mike Walker ’66 Division of Mechanical Engineering, have performed a big half in getting the ball rolling as soon as once more.
“Dr. Ambrose has given us such a cool alternative. He provides us the prospect to work on RoboBall nonetheless we wish,” mentioned Jangale, who started work on RoboBall in 2022. “We handle ourselves, and we get to take RoboBall in any route we wish.”
Pravecek echoed that sense of freedom. “We get to work as precise engineers doing engineering duties. This analysis teaches us issues past what we learn in textbooks,” he mentioned. “It truly is the most effective of each worlds.”
Robotic in an airbag
On the coronary heart of the challenge is the easy idea of a “robotic in an airbag.” Two variations now exist in tandem. RoboBall II, a 2-foot-diameter prototype, is tuned for trial runs, monitoring energy output and management algorithms. RoboBall III has a diameter of 6 ft throughout and is constructed with plans to hold payloads similar to sensors, cameras or sampling instruments, for real-world missions.
Upcoming assessments will proceed to take RoboBall into outside environments. RAD Lab researchers are planning subject trials on the seashores of Galveston to show a water-to-land transition, testing the robotic’s buoyancy and terrain adaptability in a real-world setting.
“Conventional autos stall or tip over in abrupt transitions,” Jangale defined. “This robotic can roll out of water onto sand with out worrying about orientation. It’s going the place different robots can’t.”
The elements that create the flexibility of RoboBall additionally result in a few of its challenges. As soon as sealed inside its protecting shell, the robotic can solely be accessed electronically. Any mechanical failure means disassembly and digging by way of layers of wiring and actuators.
“Diagnostics is usually a headache,” mentioned Pravacek. “If a motor fails or a sensor disconnects, you possibly can’t simply pop open a panel. It’s a must to take aside the entire robotic and rebuild. It’s like open-heart surgical procedure on a rolling ball.”
RoboBall’s novelty means the crew usually operates with no blueprint.
“Each process is new,” Jangale mentioned. “We’re very a lot on our personal. There’s no literature on soft-shelled spherical robots of this dimension that roll themselves.”
Regardless of these hurdles, the scholars discover themselves shocked each time the robotic outperforms expectations.
“When it does one thing we didn’t suppose was attainable, I’m at all times shocked,” Pravecek mentioned. “It nonetheless appears like magic.”
Scholar-led innovation
The crew set a brand new file when RoboBall II reached 20 miles per hour, roughly half its theoretical energy output. “We didn’t anticipate hitting that velocity so quickly,” Pravecek mentioned. “It was thrilling, and it opened up new targets. Now we’re pushing even additional.”
Ambrose sees these reactions as proof that student-led innovation thrives when engineers have room to discover.
“The autonomy Rishi and Derek have is precisely what a challenge like this wants,” he mentioned. “They’re not simply following directions — they’re inventing the following era of exploration instruments.”
Lengthy-term objectives embody autonomous navigation and distant deployment. The crew hopes to see RoboBall dispatched from a lunar lander to chart steep crater partitions or launched from an unmanned drone to survey post-disaster landscapes on Earth. Every ball may map terrain, transmit information again to operators and even deploy devices in hard-to-reach spots.
“Think about a swarm of those balls deployed after a hurricane,” Jangale mentioned. “They might map flooded areas, discover survivors and convey again important information — all with out risking human lives.”
Because the RoboBall challenge rolls on, student-driven analysis stands on full show.
“Engineering is downside fixing at its purest,” Ambrose mentioned. “Give artistic minds a problem and the liberty to discover, and also you’ll see innovation roll into actuality.”
Texas A&M College
